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CVE-2023-52897

Publication date 21 August 2024

Last updated 16 September 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

4.7 · Medium

Score breakdown

In the Linux kernel, the following vulnerability has been resolved: btrfs: qgroup: do not warn on record without old_roots populated [BUG] There are some reports from the mailing list that since v6.1 kernel, the WARN_ON() inside btrfs_qgroup_account_extent() gets triggered during rescan: WARNING: CPU: 3 PID: 6424 at fs/btrfs/qgroup.c:2756 btrfs_qgroup_account_extents+0x1ae/0x260 [btrfs] CPU: 3 PID: 6424 Comm: snapperd Tainted: P OE 6.1.2-1-default #1 openSUSE Tumbleweed 05c7a1b1b61d5627475528f71f50444637b5aad7 RIP: 0010:btrfs_qgroup_account_extents+0x1ae/0x260 [btrfs] Call Trace: <TASK> btrfs_commit_transaction+0x30c/0xb40 [btrfs c39c9c546c241c593f03bd6d5f39ea1b676250f6] ? start_transaction+0xc3/0x5b0 [btrfs c39c9c546c241c593f03bd6d5f39ea1b676250f6] btrfs_qgroup_rescan+0x42/0xc0 [btrfs c39c9c546c241c593f03bd6d5f39ea1b676250f6] btrfs_ioctl+0x1ab9/0x25c0 [btrfs c39c9c546c241c593f03bd6d5f39ea1b676250f6] ? __rseq_handle_notify_resume+0xa9/0x4a0 ? mntput_no_expire+0x4a/0x240 ? __seccomp_filter+0x319/0x4d0 __x64_sys_ioctl+0x90/0xd0 do_syscall_64+0x5b/0x80 ? syscall_exit_to_user_mode+0x17/0x40 ? do_syscall_64+0x67/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd9b790d9bf </TASK> [CAUSE] Since commit e15e9f43c7ca ("btrfs: introduce BTRFS_QGROUP_RUNTIME_FLAG_NO_ACCOUNTING to skip qgroup accounting"), if our qgroup is already in inconsistent state, we will no longer do the time-consuming backref walk. This can leave some qgroup records without a valid old_roots ulist. Normally this is fine, as btrfs_qgroup_account_extents() would also skip those records if we have NO_ACCOUNTING flag set. But there is a small window, if we have NO_ACCOUNTING flag set, and inserted some qgroup_record without a old_roots ulist, but then the user triggered a qgroup rescan. During btrfs_qgroup_rescan(), we firstly clear NO_ACCOUNTING flag, then commit current transaction. And since we have a qgroup_record with old_roots = NULL, we trigger the WARN_ON() during btrfs_qgroup_account_extents(). [FIX] Unfortunately due to the introduction of NO_ACCOUNTING flag, the assumption that every qgroup_record would have its old_roots populated is no longer correct. Fix the false alerts and drop the WARN_ON().

Status

Package Ubuntu Release Status
linux 24.04 LTS noble
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
22.04 LTS jammy Ignored end of kernel support
20.04 LTS focal Not in release
linux-aws 24.04 LTS noble
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
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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-aws-5.13
linux-aws-5.13 24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-aws-5.15
linux-aws-5.15 24.04 LTS noble 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
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
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
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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-aws-5.11
linux-aws-6.2 24.04 LTS noble 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
22.04 LTS jammy Ignored superseded by linux-aws-6.8
20.04 LTS focal Not in release
linux-aws-fips 24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
linux-aws-hwe 24.04 LTS noble 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
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
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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-azure-5.13
linux-azure-5.13 24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-azure-5.15
linux-azure-5.15 24.04 LTS noble 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
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
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
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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-azure-5.11
linux-azure-6.2 24.04 LTS noble 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
22.04 LTS jammy Ignored superseded by linux-azure-6.8
20.04 LTS focal Not in release
linux-azure-edge 24.04 LTS noble 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 in release
22.04 LTS jammy
Not affected
20.04 LTS focal Ignored superseded by linux-azure-fde-5.15
linux-azure-fde-5.15 24.04 LTS noble 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
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
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
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
linux-bluefield 24.04 LTS noble 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
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
linux-gcp 24.04 LTS noble
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
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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-gcp-5.13
linux-gcp-5.13 24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-gcp-5.15
linux-gcp-5.15 24.04 LTS noble 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
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
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
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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-gcp-5.11
linux-gcp-6.2 24.04 LTS noble 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
22.04 LTS jammy Ignored superseded by linux-gcp-6.8
20.04 LTS focal Not in release
linux-gcp-fips 24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
linux-gke 24.04 LTS noble
Not affected
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
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
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
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 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
22.04 LTS jammy Not in release
20.04 LTS focal
Not affected
linux-gkeop-5.4 24.04 LTS noble 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
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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-hwe-5.13
linux-hwe-5.13 24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-hwe-5.15
linux-hwe-5.15 24.04 LTS noble 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
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
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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-hwe-5.11
linux-hwe-6.2 24.04 LTS noble 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
22.04 LTS jammy Ignored superseded by linux-hwe-6.8
20.04 LTS focal Not in release
linux-hwe-6.8 24.04 LTS noble 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
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 superseded by linux-hwe
linux-ibm 24.04 LTS noble
Not affected
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
linux-ibm-5.15 24.04 LTS noble 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
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
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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored end of kernel support
linux-intel-iot-realtime 24.04 LTS noble 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-iotg 24.04 LTS noble 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
22.04 LTS jammy Not in release
20.04 LTS focal
Not affected
linux-iot 24.04 LTS noble 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
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-lowlatency 24.04 LTS noble
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
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
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
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
22.04 LTS jammy Ignored superseded by linux-lowlatency-hwe-6.8
20.04 LTS focal Not in release
linux-lowlatency-hwe-6.8 24.04 LTS noble 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
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
22.04 LTS jammy
Not affected
20.04 LTS focal Not in release
linux-nvidia-6.2 24.04 LTS noble 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
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
linux-nvidia-lowlatency 24.04 LTS noble
Not affected
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
linux-oem 24.04 LTS noble 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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-oem-5.13
linux-oem-5.13 24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-oem-5.14
linux-oem-5.14 24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Ignored replaced by linux-hwe-5.15
linux-oem-5.17 24.04 LTS noble 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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-oem-5.10
linux-oem-6.0 24.04 LTS noble 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
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
22.04 LTS jammy Ignored superseded by linux-oem-6.8
20.04 LTS focal Not in release
linux-oem-6.8 24.04 LTS noble
Not affected
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
linux-oracle 24.04 LTS noble
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
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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-oracle-5.13
linux-oracle-5.13 24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-oracle-5.15
linux-oracle-5.15 24.04 LTS noble 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
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
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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-oracle-5.11
linux-oracle-6.5 24.04 LTS noble Not in release
22.04 LTS jammy Ignored superseded by linux-oracle-6.8
20.04 LTS focal Not in release
linux-raspi 24.04 LTS noble
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
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Not affected
linux-raspi-realtime 24.04 LTS noble 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-raspi2 24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Ignored replaced by linux-raspi
linux-realtime 24.04 LTS noble Not in release
22.04 LTS jammy Ignored superseded by Ubuntu Pro ppa version
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-riscv 24.04 LTS noble
Not affected
22.04 LTS jammy Ignored end of kernel support
20.04 LTS focal Ignored superseded by linux-riscv-5.8
linux-riscv-5.11 24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-riscv-5.13
linux-riscv-5.15 24.04 LTS noble 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
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
22.04 LTS jammy Not in release
20.04 LTS focal Ignored superseded by linux-riscv-5.11
linux-riscv-6.5 24.04 LTS noble Not in release
22.04 LTS jammy Ignored superseded by linux-riscv-6.8
20.04 LTS focal Not in release
linux-riscv-6.8 24.04 LTS noble Not in release
22.04 LTS jammy
Not affected
20.04 LTS focal Not in release
linux-starfive-5.19 24.04 LTS noble 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
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
22.04 LTS jammy Ignored end of kernel support
20.04 LTS focal Not in release
linux-xilinx-zynqmp 24.04 LTS noble Not in release
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux

Severity score breakdown

Parameter Value
Base score 4.7 · Medium
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H