NULL Pointer Dereference Affecting perf package, versions <0:4.18.0-477.10.1.el8_8
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Test your applications- Snyk ID SNYK-RHEL8-PERF-5546243
- published 9 Feb 2023
- disclosed 9 Jan 2023
Introduced: 9 Jan 2023
CVE-2022-47929 Open this link in a new tabHow to fix?
Upgrade RHEL:8 perf to version 0:4.18.0-477.10.1.el8_8 or higher.
This issue was patched in RHSA-2023:2951.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control configuration that is set up with "tc qdisc" and "tc class" commands. This affects qdisc_graft in net/sched/sch_api.c.
References
- https://access.redhat.com/security/cve/CVE-2022-47929
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.6
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=96398560f26aa07e8f2969d73c8197e6a6d10407
- https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
- https://tldp.org/HOWTO/Traffic-Control-HOWTO/components.html
- https://www.debian.org/security/2023/dsa-5324
- https://www.spinics.net/lists/netdev/msg555705.html