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Vulnerability record · CVE-2026-53006 · published 24 June 2026

CVE-2026-53006: Linux kernel use after free vulnerability

Linux · Linux Kernel

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.

9.8 CVSS 3.1 Critical EPSS 0.53% · top 57.6% CWE-416 · Use after freeCWE-825 · CWE-825
9.8CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
24References
16 Sep 2026Last modified by NVD

Description

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/0069813e6ca9309eca78022bcb3aeb1e9ef90a12 Patch
https://git.kernel.org/stable/c/085e31a811ef234ef8c3e219c4636dfebfe7e10f Patch
https://git.kernel.org/stable/c/1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7 Patch
https://git.kernel.org/stable/c/38bdbc897c0d83a3e2b925a51b69420f1feba29a Patch
https://git.kernel.org/stable/c/7bff2c8fe5c35ae58bf73104f53db3676e6e5d94 Patch
https://git.kernel.org/stable/c/7c66b368c6ff453f99cb39d84af93e908e51eef2 Patch
https://git.kernel.org/stable/c/aff0f28f5be803de2452ce702631c021fcd9ce8a Patch
https://git.kernel.org/stable/c/f996edd7615e686ada141b7f3395025729ff8ccb Patch
https://access.redhat.com/errata/RHSA-2026:45192
https://access.redhat.com/errata/RHSA-2026:47010
https://access.redhat.com/errata/RHSA-2026:47011
https://access.redhat.com/errata/RHSA-2026:47017
https://access.redhat.com/errata/RHSA-2026:61932
https://access.redhat.com/errata/RHSA-2026:62568
https://access.redhat.com/errata/RHSA-2026:64767
https://access.redhat.com/errata/RHSA-2026:65710
https://access.redhat.com/errata/RHSA-2026:65711
https://access.redhat.com/errata/RHSA-2026:65712
https://access.redhat.com/errata/RHSA-2026:67721
https://access.redhat.com/errata/RHSA-2026:67723
https://access.redhat.com/security/cve/CVE-2026-53006 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2492363 Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53006.json Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-53006), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.