CVE-2021-4090

Published: 13 December 2021

An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat.

From the Ubuntu Security Team

It was discovered that the NFS server implementation in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Notes

Author	Note
sbeattie	reproducer in initial report email

Priority

Cvss 3 Severity Score

7.1

Score breakdown

Status

Package	Release	Status
linux-azure-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	impish	Does not exist
	focal	Released (5.13.0-1013.15~20.04.1)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Ignored (replaced by linux-hwe-5.4)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	xenial	Not vulnerable (4.8.0-39.42~16.04.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-hwe-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (5.4.0-37.41~18.04.1)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux Launchpad, Ubuntu, Debian	hirsute	Ignored (reached end-of-life)
	bionic	Not vulnerable (4.13.0-16.19)
	focal	Not vulnerable (5.4.0-9.12)
	trusty	Not vulnerable (3.11.0-12.19)
	upstream	Released (5.16~rc2)
	xenial	Not vulnerable (4.4.0-2.16)
	impish	Released (5.13.0-28.31)
	jammy	Not vulnerable (5.15.0-17.17)
	kinetic	Not vulnerable (5.15.0-25.25)
	lunar	Not vulnerable (5.15.0-25.25)
	Patches: Introduced by d1c263a031e876ac3ca5223c728e4d98ed50b3c0 Fixed by c0019b7db1d7ac62c711cda6b357a659d46428fe
linux-hwe-5.8 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-hwe-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Ignored (was needed now end-of-life)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-hwe-edge Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Ignored (superseded by linux-hwe)
	bionic	Ignored (superseded by linux-hwe-5.4)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	trusty	Not vulnerable (4.4.0-13.29~14.04.1)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-kvm Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Not vulnerable (4.15.0-1002.2)
	focal	Not vulnerable (5.4.0-1004.4)
	upstream	Released (5.16~rc2)
	xenial	Not vulnerable (4.4.0-1004.9)
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1011.12)
	jammy	Not vulnerable (5.15.0-1002.2)
	kinetic	Not vulnerable (5.15.0-1004.4)
	lunar	Not vulnerable (5.15.0-1004.4)
linux-aws-5.0 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-aws-5.3)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-aws-5.3 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-aws-5.4)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-aws-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (5.4.0-1018.18~18.04.1)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-aws-5.8 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-aws-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Released (5.11.0-1028.31~20.04.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-aws-hwe Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	xenial	Not vulnerable (4.15.0-1030.31~16.04.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-azure Launchpad, Ubuntu, Debian	bionic	Ignored (superseded by linux-azure-5.3)
	focal	Not vulnerable (5.4.0-1006.6)
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	upstream	Released (5.16~rc2)
	xenial	Not vulnerable (4.11.0-1009.9)
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1013.15)
	jammy	Not vulnerable (5.15.0-1001.2)
	kinetic	Not vulnerable (5.15.0-1003.4)
	lunar	Not vulnerable (5.15.0-1003.4)
linux-azure-4.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (4.15.0-1082.92)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-azure-5.3 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-azure-5.4)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-azure-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (5.4.0-1020.20~18.04.1)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-azure-5.8 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-azure-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Released (5.11.0-1028.31~20.04.2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-bluefield Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	focal	Not vulnerable (5.4.0-1007.10)
	upstream	Released (5.16~rc2)
	kinetic	Does not exist
	lunar	Does not exist
	jammy	Not vulnerable (5.15.0-1011.13)
linux-dell300x Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (4.15.0-1005.8)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-azure-edge Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-azure-5.3)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Ignored (superseded by linux-gcp-5.3)
	focal	Not vulnerable (5.4.0-1005.5)
	upstream	Released (5.16~rc2)
	xenial	Not vulnerable (4.10.0-1004.4)
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1013.16)
	jammy	Not vulnerable (5.15.0-1001.3)
	kinetic	Not vulnerable (5.15.0-1003.6)
	lunar	Not vulnerable (5.15.0-1003.6)
linux-gcp-4.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (4.15.0-1071.81)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-gcp-5.3 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-gcp-5.4)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-gcp-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (5.4.0-1019.19~18.04.2)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-gcp-5.8 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-gcp-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Released (5.11.0-1029.33~20.04.3)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-gke Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	xenial	Ignored (reached end of standard support)
	focal	Not vulnerable (5.4.0-1033.35)
	upstream	Released (5.16~rc2)
	jammy	Not vulnerable (5.15.0-1002.2)
	kinetic	Does not exist
	lunar	Does not exist
linux-gke-4.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-gke-5.3 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-gke-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (5.4.0-1025.25~18.04.1)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-gkeop Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	focal	Not vulnerable (5.4.0-1008.9)
	upstream	Released (5.16~rc2)
	jammy	Needs triage
	kinetic	Does not exist
	lunar	Does not exist
linux-gkeop-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (5.4.0-1001.1)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-ibm Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	focal	Not vulnerable (5.4.0-1003.4)
	upstream	Released (5.16~rc2)
	jammy	Not vulnerable (5.15.0-1002.2)
	kinetic	Not vulnerable (5.15.0-1002.2)
	lunar	Not vulnerable (5.15.0-1002.2)
linux-intel-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Released (5.13.0-1010.10)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-oracle Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Not vulnerable (4.15.0-1007.9)
	focal	Not vulnerable (5.4.0-1005.5)
	upstream	Released (5.16~rc2)
	xenial	Not vulnerable (4.15.0-1007.9~16.04.1)
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1016.20)
	jammy	Not vulnerable (5.15.0-1001.3)
	kinetic	Not vulnerable (5.15.0-1002.4)
	lunar	Not vulnerable (5.15.0-1002.4)
linux-oracle-5.0 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-oracle-5.3)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-oracle-5.3 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Ignored (superseded by linux-oracle-5.4)
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-oracle-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (5.4.0-1019.19~18.04.1)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-oracle-5.8 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-oracle-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Released (5.11.0-1028.31~20.04.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-oem Launchpad, Ubuntu, Debian	trusty	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	xenial	Ignored (superseded by linux-hwe)
	bionic	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-oem-5.6 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-oem-5.10 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	focal	Not vulnerable (5.10.0-1008.9)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-oem-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Released (5.13.0-1029.36)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-oem-5.14 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Released (5.14.0-1018.19)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-oem-osp1 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-raspi Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable (5.4.0-1007.7)
	upstream	Released (5.16~rc2)
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1016.18)
	jammy	Not vulnerable (5.15.0-1002.2)
	kinetic	Not vulnerable (5.15.0-1005.5)
	lunar	Not vulnerable (5.15.0-1005.5)
linux-raspi2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	focal	Ignored (replaced by linux-raspi)
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (4.13.0-1005.5)
	upstream	Released (5.16~rc2)
	xenial	Ignored (was needs-triage now end-of-life)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-raspi2-5.3 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-raspi-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (5.4.0-1013.13~18.04.1)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-riscv Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Ignored (superseded by linux-riscv-5.8)
	upstream	Released (5.16~rc2)
	hirsute	Ignored (reached end-of-life)
	impish	Released (5.13.0-1011.12)
	jammy	Not vulnerable (5.15.0-1004.4)
	kinetic	Not vulnerable (5.15.0-1007.7)
	lunar	Not vulnerable (5.15.0-1007.7)
linux-riscv-5.8 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	focal	Ignored (was needs-triage now end-of-life)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-riscv-5.11 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Ignored (was pending [5.11.0-1029.32~20.04.1] now end-of-life)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	trusty	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (4.4.0-1077.82)
	upstream	Released (5.16~rc2)
	xenial	Ignored (was needs-triage now end-of-life)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-aws Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1001.1)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Not vulnerable (4.4.0-1002.2)
	upstream	Released (5.16~rc2)
	xenial	Not vulnerable (4.4.0-1001.10)
	impish	Released (5.13.0-1012.13)
	hirsute	Ignored (reached end-of-life)
	jammy	Not vulnerable (5.15.0-1002.4)
	kinetic	Not vulnerable (5.15.0-1004.6)
	lunar	Not vulnerable (5.15.0-1004.6)
linux-hwe-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Released (5.13.0-28.31~20.04.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-aws-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Released (5.13.0-1012.13~20.04.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-fips Launchpad, Ubuntu, Debian	trusty	Does not exist
	bionic	Does not exist
	focal	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	xenial	Ignored (out of standard support)
	kinetic	Does not exist
	lunar	Does not exist
linux-oracle-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Released (5.13.0-1016.20~20.04.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-gcp-5.13 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	impish	Does not exist
	upstream	Released (5.16~rc2)
	focal	Released (5.13.0-1013.16~20.04.1)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-ibm-5.4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	focal	Does not exist
	impish	Does not exist
	bionic	Not vulnerable (5.4.0-1010.11~18.04.2)
	upstream	Released (5.16~rc2)
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
linux-azure-fde Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	impish	Does not exist
	focal	Not vulnerable (5.4.0-1006.6)
	upstream	Released (5.16~rc2)
	jammy	Needs triage
	kinetic	Does not exist
	lunar	Does not exist
linux-lowlatency Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	impish	Does not exist
	jammy	Not vulnerable (5.15.0-22.22)
	upstream	Released (5.16~rc2)
	kinetic	Not vulnerable (5.15.0-24.24)
	lunar	Not vulnerable (5.15.0-24.24)
linux-oem-5.17 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	impish	Does not exist
	jammy	Not vulnerable (5.17.0-1003.3)
	upstream	Released (5.16~rc2)
	kinetic	Not vulnerable (5.17.0-1003.3)
	lunar	Does not exist
linux-intel-iotg Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	impish	Does not exist
	upstream	Needs triage
	kinetic	Does not exist
	lunar	Does not exist
	jammy	Not vulnerable (5.15.0-1004.6)
linux-intel-iotg-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	impish	Does not exist
	jammy	Does not exist
	upstream	Needs triage
	kinetic	Does not exist
	lunar	Does not exist
	focal	Not vulnerable (5.15.0-1003.5~20.04.1)
linux-lowlatency-hwe-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable
	jammy	Does not exist
	upstream	Needs triage
	kinetic	Does not exist
	lunar	Does not exist
linux-hwe-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable
	jammy	Does not exist
	upstream	Needs triage
	kinetic	Does not exist
	lunar	Does not exist
linux-aws-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	upstream	Needs triage
	focal	Not vulnerable
	kinetic	Does not exist
	lunar	Does not exist
linux-gcp-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable
	jammy	Does not exist
	upstream	Needs triage
	kinetic	Does not exist
	lunar	Does not exist
linux-gke-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable
	jammy	Does not exist
	upstream	Needs triage
	kinetic	Does not exist
	lunar	Does not exist
linux-azure-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable
	jammy	Does not exist
	upstream	Needs triage
	kinetic	Does not exist
	lunar	Does not exist
linux-oracle-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable
	jammy	Does not exist
	upstream	Needs triage
	kinetic	Does not exist
	lunar	Does not exist
linux-azure-fde-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	upstream	Needs triage
	lunar	Does not exist
	focal	Not vulnerable (5.15.0-1007.8~20.04.1)
linux-oem-6.0 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Needs triage
	kinetic	Does not exist
	upstream	Needs triage
	lunar	Does not exist
linux-oem-6.1 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	kinetic	Does not exist
	upstream	Needs triage
	lunar	Does not exist
linux-hwe-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	kinetic	Does not exist
	upstream	Needs triage
	lunar	Does not exist
linux-lowlatency-hwe-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	kinetic	Does not exist
	upstream	Needs triage
	lunar	Does not exist
linux-azure-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	kinetic	Does not exist
	upstream	Needs triage
	lunar	Does not exist
linux-iot Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	upstream	Needs triage
linux-riscv-5.15 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	upstream	Needs triage
linux-azure-fde-5.19 Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Not vulnerable
	kinetic	Does not exist
	lunar	Does not exist
	upstream	Needs triage
linux-xilinx-zynqmp Launchpad, Ubuntu, Debian	trusty	Does not exist
	xenial	Does not exist
	bionic	Does not exist
	focal	Not vulnerable
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	upstream	Needs triage

Severity score breakdown

Parameter	Value
Base score	7.1
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	None
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

References

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