CVE-2026-74490
CVE CVE-2026-74490EUVD EUVD-2026-59683Published 2026-08-15T12:27:20.000ZLast changed 2026-08-19T16:37:45.000ZCVSS 8.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: tipc: avoid use-after-free in poll trace queue dumps TIPC socket tracepoints dump queue state through tipc_sk_dump(). Most queue-dump callsites already serialize that walk under the socket lock or sk->sk_lock.slock, but tipc_poll() calls trace_tipc_sk_poll(..., TIPC_DUMP_ALL, ...) without holding either lock. That lets the poll trace path reach tipc_list_dump() and backlog head/tail dumping while another context dequeues and frees an skb, leaving the trace helper dereferencing a stale queue entry. Stop the unlocked poll trace site from requesting queue dumps. Other queue dump trace callsites keep their existing output under the locking they already provide, while poll still emits the event itself without walking live queue members from an unlocked context.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux b4b9771bcbbd5839b0f77aba55e2f85989ed6779 <78706367fe1b98aee0a6de27c62b7f1e3035f38d; patch: 7.2; b4b9771bcbbd5839b0f77aba55e2f85989ed6779 <d7940bb6a8e7ab28f972c2875cb05783216312dc; patch: 6.18.44; patch: 5.10.265; b4b9771bcbbd5839b0f77aba55e2f85989ed6779 <b4f1719dfea023220e0e6bd892b087d76b2a6a49; b4b9771bcbbd5839b0f77aba55e2f85989ed6779 <5e82beba4bc1f91d0e64c9c43f2b2fa9cd1c2a7d; b4b9771bcbbd5839b0f77aba55e2f85989ed6779 <bed792737b5f1ba773054dbe984502958bdfe6ce; patch: 6.6.151; 5.0; b4b9771bcbbd5839b0f77aba55e2f85989ed6779 <ac2f787980fdf4364cd5651a4c8128e59b8de3aa; patch: 6.12.103; patch: 6.1.183; patch: 7.1.8; b4b9771bcbbd5839b0f77aba55e2f85989ed6779 <ae7fc824970888b4fdaa076819c9a6f2fcede275; patch: 0; patch: 5.15.216; b4b9771bcbbd5839b0f77aba55e2f85989ed6779 <3cd57c6b210d50fd1f7ac1720442ba5be5dc94f8
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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