--- title: "CVE-2021-47481\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2021-47481?format=md keywords: index, follow --- # CVE-2021-47481 Publication date 22 May 2024 Last updated 4 July 2026 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **5.5 · Medium** [Score breakdown](https://ubuntu.com/security/CVE-2021-47481?format=md#impact-score) Toggle side navigation ## Description In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Initialize the ODP xarray when creating an ODP MR Normally the zero fill would hide the missing initialization, but an errant set to desc\_size in reg\_create() causes a crash: BUG: unable to handle page fault for address: 0000000800000000 PGD 0 P4D 0 Oops: 0000 [#1] SMP PTI CPU: 5 PID: 890 Comm: ib\_write\_bw Not tainted 5.15.0-rc4+ #47 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:mlx5\_ib\_dereg\_mr+0x14/0x3b0 [mlx5\_ib] Code: 48 63 cd 4c 89 f7 48 89 0c 24 e8 37 30 03 e1 48 8b 0c 24 eb a0 90 0f 1f 44 00 00 41 56 41 55 41 54 55 53 48 89 fb 48 83 ec 30 <48> 8b 2f 65 48 8b 04 25 28 00 00 00 48 89 44 24 28 31 c0 8b 87 c8 RSP: 0018:ffff88811afa3a60 EFLAGS: 00010286 RAX: 000000000000001c RBX: 0000000800000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000800000000 RBP: 0000000800000000 R08: 0000000000000000 R09: c0000000fffff7ff R10: ffff88811afa38f8 R11: ffff88811afa38f0 R12: ffffffffa02c7ac0 R13: 0000000000000000 R14: ffff88811afa3cd8 R15: ffff88810772fa00 FS: 00007f47b9080740(0000) GS:ffff88852cd40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000800000000 CR3: 000000010761e003 CR4: 0000000000370ea0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mlx5\_ib\_free\_odp\_mr+0x95/0xc0 [mlx5\_ib] mlx5\_ib\_dereg\_mr+0x128/0x3b0 [mlx5\_ib] ib\_dereg\_mr\_user+0x45/0xb0 [ib\_core] ? xas\_load+0x8/0x80 destroy\_hw\_idr\_uobject+0x1a/0x50 [ib\_uverbs] uverbs\_destroy\_uobject+0x2f/0x150 [ib\_uverbs] uobj\_destroy+0x3c/0x70 [ib\_uverbs] ib\_uverbs\_cmd\_verbs+0x467/0xb00 [ib\_uverbs] ? uverbs\_finalize\_object+0x60/0x60 [ib\_uverbs] ? ttwu\_queue\_wakelist+0xa9/0xe0 ? pty\_write+0x85/0x90 ? file\_tty\_write.isra.33+0x214/0x330 ? process\_echoes+0x60/0x60 ib\_uverbs\_ioctl+0xa7/0x110 [ib\_uverbs] \_\_x64\_sys\_ioctl+0x10d/0x8e0 ? vfs\_write+0x17f/0x260 do\_syscall\_64+0x3c/0x80 entry\_SYSCALL\_64\_after\_hwframe+0x44/0xae Add the missing xarray initialization and remove the desc\_size set. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | linux | 24.04 LTS noble | Not affected | | 23.10 mantic | Not affected | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not affected | | 18.04 LTS bionic | Not affected | | 16.04 LTS xenial | Not affected | | 14.04 LTS trusty | Not affected | | linux-allwinner-5.19 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored end of kernel support | | 20.04 LTS focal | Not in release | | linux-aws | 24.04 LTS noble | Not affected | | 23.10 mantic | Not affected | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not affected | | 18.04 LTS bionic | Not affected | | 16.04 LTS xenial | Not affected | | 14.04 LTS trusty | Not affected | | linux-aws-5.0 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored superseded by linux-aws-5.3 | | linux-aws-5.11 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-aws-5.13] | | linux-aws-5.13 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-aws-5.15] | | linux-aws-5.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-aws-5.19 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-aws-6.2 | | 20.04 LTS focal | Not in release | | linux-aws-5.3 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored superseded by linux-aws-5.4 | | linux-aws-5.4 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not affected | | linux-aws-5.8 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-aws-5.11] | | linux-aws-6.2 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-aws-6.5 | | 20.04 LTS focal | Not in release | | linux-aws-6.5 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-aws-fips | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal FIPS | Not affected | | 18.04 LTS bionic FIPS | Not affected | | linux-aws-hwe | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 16.04 LTS xenial | Not affected | | linux-azure | 24.04 LTS noble | Not affected | | 23.10 mantic | Not affected | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not affected | | 18.04 LTS bionic | Ignored superseded by linux-azure-5.3 | | 16.04 LTS xenial | Not affected | | 14.04 LTS trusty | Not affected | | linux-azure-4.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not affected | | linux-azure-5.11 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-azure-5.13] | | linux-azure-5.13 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-azure-5.15] | | linux-azure-5.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-azure-5.19 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-azure-6.2 | | 20.04 LTS focal | Not in release | | linux-azure-5.3 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored superseded by linux-azure-5.4 | | linux-azure-5.4 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not affected | | linux-azure-5.8 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-azure-5.11] | | linux-azure-6.2 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-azure-6.5 | | 20.04 LTS focal | Not in release | | linux-azure-6.5 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-azure-edge | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored superseded by linux-azure-5.3 | | linux-azure-fde | 24.04 LTS noble | Not affected | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-azure-fde-5.15] | | linux-azure-fde-5.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-azure-fde-5.19 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-azure-fde-6.2 | | 20.04 LTS focal | Not in release | | linux-azure-fde-6.2 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored replaced by linux-azure-6.5 | | 20.04 LTS focal | Not in release | | linux-azure-fips | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal FIPS | Not affected | | 18.04 LTS bionic FIPS | Not affected | | linux-bluefield | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-fips | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal FIPS | Not affected | | 18.04 LTS bionic FIPS | Not affected | | 16.04 LTS xenial FIPS | Not affected | | linux-gcp | 24.04 LTS noble | Not affected | | 23.10 mantic | Not affected | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not affected | | 18.04 LTS bionic | Ignored superseded by linux-gcp-5.3 | | 16.04 LTS xenial | Not affected | | linux-gcp-4.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not affected | | linux-gcp-5.11 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-gcp-5.13] | | linux-gcp-5.13 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-gcp-5.15] | | linux-gcp-5.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-gcp-5.19 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-gcp-6.2 | | 20.04 LTS focal | Not in release | | linux-gcp-5.3 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored superseded by linux-gcp-5.4 | | linux-gcp-5.4 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not affected | | linux-gcp-5.8 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-gcp-5.11] | | linux-gcp-6.2 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-gcp-6.5 | | 20.04 LTS focal | Not in release | | linux-gcp-6.5 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-gcp-fips | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal FIPS | Not affected | | 18.04 LTS bionic FIPS | Not affected | | linux-gke | 24.04 LTS noble | Not affected | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Ignored end of kernel support | | linux-gke-4.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored superseded by linux-gke-5.0 | | linux-gke-5.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of kernel support | | linux-gke-5.4 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored end of kernel support | | linux-gkeop | 24.04 LTS noble | Not affected | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not affected | | linux-gkeop-5.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-gkeop-5.4 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored end of kernel support | | linux-hwe | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored replaced by linux-hwe-5.4 | | 16.04 LTS xenial | Not affected | | linux-hwe-5.11 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-hwe-5.13] | | linux-hwe-5.13 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-hwe-5.15] | | linux-hwe-5.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-hwe-5.19 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-hwe-6.2 | | 20.04 LTS focal | Not in release | | linux-hwe-5.4 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not affected | | linux-hwe-5.8 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-hwe-5.11] | | linux-hwe-6.2 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-hwe-6.5 | | 20.04 LTS focal | Not in release | | linux-hwe-6.5 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-hwe-edge | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored superseded by linux-hwe-5.4 | | 16.04 LTS xenial | Ignored end of ESM support, was ignored [superseded by linux-hwe] | | linux-ibm | 24.04 LTS noble | Not affected | | 23.10 mantic | Ignored end of kernel support | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not affected | | linux-ibm-5.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-ibm-5.4 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not affected | | linux-intel | 24.04 LTS noble | Not affected | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not in release | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | | linux-intel-5.13 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of kernel support | | linux-intel-iotg | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-intel-iotg-5.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-iot | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-kvm | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not affected | | 18.04 LTS bionic | Not affected | | 16.04 LTS xenial | Not affected | | linux-laptop | 24.04 LTS noble | Not in release | | 23.10 mantic | Not affected | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | linux-lowlatency | 24.04 LTS noble | Not affected | | 23.10 mantic | Not affected | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-lowlatency-hwe-5.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-lowlatency-hwe-5.19 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-lowlatency-hwe-6.2 | | 20.04 LTS focal | Not in release | | linux-lowlatency-hwe-6.2 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-lowlatency-hwe-6.5 | | 20.04 LTS focal | Not in release | | linux-lowlatency-hwe-6.5 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-lts-xenial | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 14.04 LTS trusty | Not affected | | linux-nvidia | 24.04 LTS noble | Not affected | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-nvidia-6.2 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-nvidia-6.5 | | 20.04 LTS focal | Not in release | | linux-nvidia-6.5 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-nvidia-6.8 | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not in release | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | | linux-nvidia-lowlatency | 24.04 LTS noble | Not affected | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not in release | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | | linux-oem | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored replaced by linux-hwe-5.4 | | linux-oem-5.10 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-oem-5.13] | | linux-oem-5.13 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-oem-5.14] | | linux-oem-5.14 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [replaced by linux-hwe-5.15] | | linux-oem-5.17 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-oem-6.1 | | 20.04 LTS focal | Not in release | | linux-oem-5.6 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-oem-5.10] | | linux-oem-6.0 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-oem-6.1 | | 20.04 LTS focal | Not in release | | linux-oem-6.1 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-oem-6.5 | | 20.04 LTS focal | Not in release | | linux-oem-6.5 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-oem-6.8 | 24.04 LTS noble | Not affected | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not in release | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | | linux-oracle | 24.04 LTS noble | Not affected | | 23.10 mantic | Not affected | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not affected | | 18.04 LTS bionic | Not affected | | 16.04 LTS xenial | Not affected | | linux-oracle-5.0 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored superseded by linux-oracle-5.3 | | linux-oracle-5.11 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-oracle-5.13] | | linux-oracle-5.13 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-oracle-5.15] | | linux-oracle-5.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-oracle-5.3 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Ignored superseded by linux-oracle-5.4 | | linux-oracle-5.4 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not affected | | linux-oracle-5.8 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-oracle-5.11] | | linux-oracle-6.5 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-raspi | 24.04 LTS noble | Not affected | | 23.10 mantic | Not affected | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not affected | | linux-raspi-5.4 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not affected | | linux-raspi2 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [replaced by linux-raspi] | | linux-riscv | 24.04 LTS noble | Not affected | | 23.10 mantic | Not affected | | 22.04 LTS jammy | Ignored end of kernel support | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-riscv-5.8] | | linux-riscv-5.11 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-riscv-5.13] | | linux-riscv-5.15 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not affected | | linux-riscv-5.19 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored end of kernel support | | 20.04 LTS focal | Not in release | | linux-riscv-5.8 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Ignored end of standard support, was ignored [superseded by linux-riscv-5.11] | | linux-riscv-6.5 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-starfive | 24.04 LTS noble | Not in release | | 23.10 mantic | Not affected | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | linux-starfive-5.19 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored end of kernel support | | 20.04 LTS focal | Not in release | | linux-starfive-6.2 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Ignored superseded by linux-starfive-6.5 | | 20.04 LTS focal | Not in release | | linux-starfive-6.5 | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not in release | | linux-xilinx-zynqmp | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not affected | | 20.04 LTS focal | Not affected | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) * [Patch details](https://ubuntu.com/security/CVE-2021-47481?format=md#patch-details) ### Patch details For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) | Package | Patch details | | --- | --- | | linux | * Introduced by [a639e66](https://git.kernel.org/linus/a639e66703ee45745dc4057c7c2013ed9e1963a7), fixed by [5508546](https://git.kernel.org/linus/5508546631a0f555d7088203dec2614e41b5106e) | ## Severity score breakdown CVSS version: CVSS v3.0 **Base score** 5.5 · Medium * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Local | | Attack complexity | Low | | Privileges required | Low | | User interaction | None | | Scope | Unchanged | | Confidentiality impact | None | | Integrity impact | None | | Availability impact | High | * Scores | Parameter | Value | | --- | --- | | Base score | 5.5 · Medium | | Exploitability score | - | | Impact score | - | **Vector:** CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-47481) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2021-47481) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2021-47481) * [Debian](https://security-tracker.debian.org/tracker/CVE-2021-47481) ### Other references * * * *