Improper Input Validation The advisory has been revoked - it doesn't affect any version of package kernel (opens in a new tab)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-KERNEL-9311433
- published7 Mar 2025
- disclosed21 Jun 2024
Introduced: 21 Jun 2024
CVE-2024-36244 (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 package and not the kernel package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
net/sched: taprio: extend minimum interval restriction to entire cycle too
It is possible for syzbot to side-step the restriction imposed by the blamed commit in the Fixes: tag, because the taprio UAPI permits a cycle-time different from (and potentially shorter than) the sum of entry intervals.
We need one more restriction, which is that the cycle time itself must be larger than N * ETH_ZLEN bit times, where N is the number of schedule entries. This restriction needs to apply regardless of whether the cycle time came from the user or was the implicit, auto-calculated value, so we move the existing "cycle == 0" check outside the "if "(!new->cycle_time)" branch. This way covers both conditions and scenarios.
Add a selftest which illustrates the issue triggered by syzbot.
References
- https://access.redhat.com/security/cve/CVE-2024-36244
- https://git.kernel.org/stable/c/34d83c3e6e97867ae061d14eb52123404aab1cbc
- https://git.kernel.org/stable/c/91f249b01fe490fce11fbb4307952ca8cce78724
- https://git.kernel.org/stable/c/b939d1e04a90248b4cdf417b0969c270ceb992b2
- https://git.kernel.org/stable/c/fb66df20a7201e60f2b13d7f95d031b31a8831d3
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html