CVE-2026-63971
highpriority · track · 0EPSS 0.001 · 3 %ileDEEUFRRUUSEPSS · scored 2026-10-27
In the Linux kernel, the following vulnerability has been resolved: sctp: fix race between sctp_wait_for_connect and peeloff sctp_wait_for_connect() drops and re-acquires the socket lock while waiting for the association to reach ESTABLISHED state. During this window, another thread can peeloff the association to a new socket via getsockopt(SCTP_SOCKOPT_PEELOFF), changing asoc->base.sk. After re-acquiring the old socket lock, sctp_wait_for_connect() returns success without noticing the migration — the caller then accesses the association under the wrong lock in sctp_datamsg_from_user(). Add the same sk != asoc->base.sk check that sctp_wait_for_sndbuf() already has, returning an error if the association was migrated while we slept.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (64)
Products and version ranges known to be affected.
advisories (5)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-2403Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten AngriffDeutsch2026-07-19csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen, möglicherweise Sicherheitsmaßnahmen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen oder vertrauliche Informationen offenzulegen.
- CERTFR-2026-AVI-1333Multiples vulnérabilités dans le noyau Linux d'UbuntuFrançais2026-10-16vendor · certfrFR
- CERTFR-2026-AVI-1335Multiples vulnérabilités dans le noyau Linux de SUSEFrançais2026-10-16vendor · certfrFR
- CERTFR-2026-AVI-1336Multiples vulnérabilités dans les produits IBMFrançais2026-10-16vendor · certfrFR
- CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (25)
External citations — patches, advisories, analysis.
- https://git.kernel.org/stable/c/0e0d5bc76fd4267a71334fcc8f1a5fbcf997845dcnnvd
- https://git.kernel.org/stable/c/6140cfa721451fa6e18e134e709703c2bf34d0fbcnnvd
- https://git.kernel.org/stable/c/634a9af8a26a84d8b0d7b3b643204b344b42d9fbcnnvd
- https://git.kernel.org/stable/c/68667ee4c7dadf7f63167234e2a1af09b3f7874ecnnvd
- https://git.kernel.org/stable/c/7d2038d4b80166f7bead8d07eba3b97405816c21cnnvd
- https://git.kernel.org/stable/c/8e9b56051d24540cfbf39194618708c4a7633549cnnvd
- https://git.kernel.org/stable/c/bcfeac79af740735ace44008b4a11b8e5add20f5cnnvd
- https://git.kernel.org/stable/c/f14fe6395a8b3d961a61e138ad7b36ba3626dd4ecnnvd
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