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Red Hat Security Advisory

RHSA-2026:71601

kernel security update

Released 2026-09-24 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 6 records

Priority CRITICAL 97KEV

In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: make ebt_snat ARP rewrite writable The ebtables SNAT target keeps the Ethernet source address rewrite behind skb_ensure_writable(skb,…

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.00934 Published 2026-06-25 Fixed in 5.5, 5.9 +9 CWE-787
Priority CRITICAL 93KEV

In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg Issuing two writes to the same af_alg socket is bogus as the data will be interleaved in a…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.01607 Published 2025-10-13 Fixed in 5.10.245, 5.15.194 +5 CWE-362
TI-2026-52253 CVE-2026-74469 · GHSA-772m-42gr-vc4c

sctp: prevent peer transport count overflow

Priority MEDIUM 43

In the Linux kernel, the following vulnerability has been resolved: sctp: prevent peer transport count overflow sctp_assoc_add_peer() increments the association's 16-bit transport_count for every new unique peer.

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.01467 Published 2026-08-15 Partial fix · 5.10.265, 5.15.216 +6
TI-2026-56013 CVE-2026-81000 · GHSA-32hf-vhcc-85c2

net: tun: bound receive headroom

Priority LOW 36

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tun_get_user() uses tun->align both as skb headroom and when choosing how much packet data to keep linear.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00357 Published 2026-09-11 Partial fix · 5.10.270, 5.15.221 +6
Priority LOW 36

In the Linux kernel, the following vulnerability has been resolved: pppoe: reload header pointer after dev_hard_header() pppoe_sendmsg() saves a pointer to the PPPoE header before calling dev_hard_header().

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00367 Published 2026-08-10 Partial fix · 5.10.265, 5.15.216 +6 CWE-416
Priority LOW 23

In the Linux kernel, the following vulnerability has been resolved: xfrm: ah6: validate routing header segments_left AH6 rearranges routing-header addresses before computing or verifying the ICV.

CVSS — EPSS 0.00434 Published 2026-09-04 Partial fix · 5.10.269, 5.15.220 +7