Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package kernel-rt-devel (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL9-KERNELRTDEVEL-7095118
- published24 May 2024
- disclosed21 May 2024
Introduced: 21 May 2024
CVE-2021-47291 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-devel package and not the kernel-rt-devel package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions
While running the self-tests on a KASAN enabled kernel, I observed a slab-out-of-bounds splat very similar to the one reported in commit 821bbf79fe46 ("ipv6: Fix KASAN: slab-out-of-bounds Read in fib6_nh_flush_exceptions").
We additionally need to take care of fib6_metrics initialization failure when the caller provides an nh.
The fix is similar, explicitly free the route instead of calling fib6_info_release on a half-initialized object.
References
- https://access.redhat.com/security/cve/CVE-2021-47291
- https://git.kernel.org/stable/c/115784bcccf135c3a3548098153413d76f16aae0
- https://git.kernel.org/stable/c/830251361425c5be044db4d826aaf304ea3d14c6
- https://git.kernel.org/stable/c/8fb4792f091e608a0a1d353dfdf07ef55a719db5
- https://git.kernel.org/stable/c/ce8fafb68051fba52546f8bbe8621f7641683680