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Expired Pointer Dereference The advisory has been revoked - it doesn't affect any version of package kernel-rt-64k-devel-matched  (opens in a new tab)

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EPSS
0.14% (4th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELRT64KDEVELMATCHED-13387045
  • published7 Oct 2025
  • disclosed4 Oct 2025
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Introduced: 4 Oct 2025

CVE-2023-53559  (opens in a new tab)
CWE-825  (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-rt-64k-devel-matched package and not the kernel-rt-64k-devel-matched package as distributed by RHEL.

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

ip_vti: fix potential slab-use-after-free in decode_session6

When ip_vti device is set to the qdisc of the sfb type, the cb field of the sent skb may be modified during enqueuing. Then, slab-use-after-free may occur when ip_vti device sends IPv6 packets. As commit f855691975bb ("xfrm6: Fix the nexthdr offset in _decode_session6.") showed, xfrm_decode_session was originally intended only for the receive path. IP6CB(skb)->nhoff is not set during transmission. Therefore, set the cb field in the skb to 0 before sending packets.