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Use After Free The advisory has been revoked - it doesn't affect any version of package kernel-uki-virt-addons  (opens in a new tab)

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EPSS
0.4% (33rd percentile)

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  • Snyk IDSNYK-RHEL10-KERNELUKIVIRTADDONS-19213955
  • published23 Aug 2026
  • disclosed21 Aug 2026
Report a new vulnerability Found a mistake?

Introduced: 21 Aug 2026

NewCVE-2026-74581  (opens in a new tab)
CWE-416  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uki-virt-addons package and not the kernel-uki-virt-addons package as distributed by RHEL.

In the Linux kernel, the following vulnerability has been resolved:

net: ipv6: clear suppressed fib6 rule result

fib6_rule_suppress() drops a suppressed route with ip6_rt_put_flags(), but leaves res->rt6 pointing at the released rt6_info.

If no later rule supplies a replacement, fib6_rule_lookup() still sees res.rt6 and returns that stale dst to its caller. A suppressing rule can therefore leak a released route back to rt6_lookup(), and the next put hits rcuref_put_slowpath() from dst_release().

Clear res->rt6 when suppressing the route so suppressed lookups fall through to the null dst instead of reusing the released one.