CVE-2026-23245 Affecting kernel6.18-libbpf-debuginfo package, versions <1:6.18.20-20.229.amzn2023
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-AMZN2023-KERNEL618LIBBPFDEBUGINFO-16349723
- published3 May 2026
- disclosed18 Mar 2026
Introduced: 18 Mar 2026
CVE-2026-23245 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2023 kernel6.18-libbpf-debuginfo to version 1:6.18.20-20.229.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1596.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel6.18-libbpf-debuginfo package and not the kernel6.18-libbpf-debuginfo package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
net/sched: act_gate: snapshot parameters with RCU on replace
The gate action can be replaced while the hrtimer callback or dump path is walking the schedule list.
Convert the parameters to an RCU-protected snapshot and swap updates under tcf_lock, freeing the previous snapshot via call_rcu(). When REPLACE omits the entry list, preserve the existing schedule so the effective state is unchanged.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-23245
- https://git.kernel.org/stable/c/035d0d09d5ab3ed3e93d18cde2b562a6719eea23
- https://git.kernel.org/stable/c/04d75529dc0f9be78786162ebab7424af4644df2
- https://git.kernel.org/stable/c/58b162e318d0243ad2d7d92456c0873f2494c351
- https://git.kernel.org/stable/c/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c
- https://git.kernel.org/stable/c/8b1251bbf0f10ac745ed74bad4d3b433caa1eeae
- https://git.kernel.org/stable/c/dfc314d7c767e350f78a46a8f8b134f80e8ad432
- https://git.kernel.org/stable/c/fc98fd8d214693be91253d9a88cdf8e5e143d124