7.8

CVE-2026-63971

sctp: fix race between sctp_wait_for_connect and peeloff

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.16 < 5.10.259
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.210
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.176
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.143
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.93
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.35
Linux ≫ Linux Kernel Version >= 6.19 < 7.0.12
Linux ≫ Linux Kernel Version 7.1 Update rc1
Linux ≫ Linux Kernel Version 7.1 Update rc2
Linux ≫ Linux Kernel Version 7.1 Update rc3
Linux ≫ Linux Kernel Version 7.1 Update rc4
Linux ≫ Linux Kernel Version 7.1 Update rc5
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.066
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

https://git.kernel.org/stable/c/0e0d5bc76fd4267a71334fcc8f1a5fbcf997845d
Patch
https://git.kernel.org/stable/c/bcfeac79af740735ace44008b4a11b8e5add20f5
Patch
https://git.kernel.org/stable/c/8e9b56051d24540cfbf39194618708c4a7633549
Patch
https://git.kernel.org/stable/c/634a9af8a26a84d8b0d7b3b643204b344b42d9fb
Patch
https://git.kernel.org/stable/c/7d2038d4b80166f7bead8d07eba3b97405816c21
Patch
https://git.kernel.org/stable/c/68667ee4c7dadf7f63167234e2a1af09b3f7874e
Patch
https://git.kernel.org/stable/c/6140cfa721451fa6e18e134e709703c2bf34d0fb
Patch
https://git.kernel.org/stable/c/f14fe6395a8b3d961a61e138ad7b36ba3626dd4e
Patch