CVE-2023-52462 The advisory has been revoked - it doesn't affect any version of package kernel-tools (opens in a new tab)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-RHEL7-KERNELTOOLS-6275753
- published25 Feb 2024
- disclosed23 Feb 2024
Introduced: 23 Feb 2024
CVE-2023-52462 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:7.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-tools package and not the kernel-tools package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
bpf: fix check for attempt to corrupt spilled pointer
When register is spilled onto a stack as a 1/2/4-byte register, we set slot_type[BPF_REG_SIZE - 1] (plus potentially few more below it, depending on actual spill size). So to check if some stack slot has spilled register we need to consult slot_type[7], not slot_type[0].
To avoid the need to remember and double-check this in the future, just use is_spilled_reg() helper.
References
- https://access.redhat.com/security/cve/CVE-2023-52462
- https://git.kernel.org/stable/c/2757f17972d87773b3677777f5682510f13c66ef
- https://git.kernel.org/stable/c/40617d45ea05535105e202a8a819e388a2b1f036
- https://git.kernel.org/stable/c/67e6707f07354ed1acb4e65552e97c60cf9d69cf
- https://git.kernel.org/stable/c/8dc15b0670594543c356567a1a45b0182ec63174
- https://git.kernel.org/stable/c/ab125ed3ec1c10ccc36bc98c7a4256ad114a3dae
- https://git.kernel.org/stable/c/fc3e3c50a0a4cac1463967c110686189e4a59104
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html