CVE-2026-98102 Affecting kernel-livepatch-6.12.111-136.204 package, versions <1:1.0-0.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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-AMZN2023-KERNELLIVEPATCH612111136204-20860833
- published13 Oct 2026
- disclosed25 Sept 2026
Introduced: 25 Sep 2026
NewCVE-2026-98102 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2023 kernel-livepatch-6.12.111-136.204 to version 1:1.0-0.amzn2023 or higher.
This issue was patched in ALAS2023-2026-3193.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-6.12.111-136.204 package and not the kernel-livepatch-6.12.111-136.204 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:
ipv6: mcast: fix RCU list diversion in ip6_mc_del1_src()
When removing a source filter whose count reaches zero, ip6_mc_del1_src() unlinks psf from pmc->mca_sources. If the filter was previously active, the code moved psf directly into pmc->mca_tomb by updating psf->sf_next.
Because pmc->mca_sources is traversed locklessly under RCU (e.g. by ipv6_chk_mcast_addr()), mutating psf->sf_next before a grace period elapses diverts concurrent readers to the tombstone list. Consequently, readers miss remaining active sources in pmc->mca_sources and improperly examine deleted tombstone entries.
Fix this by allocating a new tombstone node for pmc->mca_tomb (as done in sf_setstate()) and retiring the original psf via kfree_rcu().
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-98102
- https://git.kernel.org/stable/c/4352737297b262e8367675c19a7dc6a9f53c97af
- https://git.kernel.org/stable/c/5149c60c406595b56fda0c6e9aae7fd287f636aa
- https://git.kernel.org/stable/c/8d4fe5c13f5056faa6deb09a90e24a89f9ebfad4
- https://git.kernel.org/stable/c/93b49239840b91313adbd77b8b52993eff2d08c1
- https://git.kernel.org/stable/c/c3343cd7ec8706c221e52b782f386b9af14a928a