Use After Free Affecting kernel-rt-debug package, versions <0:4.18.0-553.148.1.rt7.489.el8_10


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.4% (33rd percentile)

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  • Snyk IDSNYK-ALMALINUX8-KERNELRTDEBUG-18385259
  • published29 Jul 2026
  • disclosed24 Jul 2026

Introduced: 24 Jul 2026

NewCVE-2026-53006  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 kernel-rt-debug to version 0:4.18.0-553.148.1.rt7.489.el8_10 or higher.
This issue was patched in ALSA-2026:47010.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug package and not the kernel-rt-debug package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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

ipv6: fix possible UAF in icmpv6_rcv()

Caching saddr and daddr before pskb_pull() is problematic since skb->head can change.

Remove these temporary variables:

  • We only access &ipv6_hdr(skb)->saddr and &ipv6_hdr(skb)->daddr when net_dbg_ratelimited() is called in the slow path.

  • Avoid potential future misuse after pskb_pull() call.

CVSS Base Scores

version 3.1