Bluetooth: L2CAP: fix chan ref leak in l2cap_chan_timeout() on !conn (Linux Linux)

CVE-2026-63948
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.16 % · centile 5 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: fix chan ref leak in l2cap_chan_timeout() on !conn __set_chan_timer() takes a l2cap_chan reference via l2cap_chan_hold() before scheduling the delayed work. The normal path in l2cap_chan_timeout() drops this reference with l2cap_chan_put() at the end, but the early return when chan->conn is NULL skips the put, leaking the reference. Add the missing l2cap_chan_put() before the early return.

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 06acb75e7ed600d0bbf7bff5628aa8f24a97978c < 50f1bcaaaa3a80bb1c3472044bc146e8d49d51ee ; affected e97e16433eb4533083b096a3824b93a5ca3aee79 < b5c59a5b469e2a809a2d57eda4ded94235971060 ; affected 8960ff650aec70485b40771cd8e6e8c4cb467d33 < 8894c2010435a56ce7c6c2a8785860c13554df2f ; affected 955b5b6c54d95b5e7444dfc81c95c8e013f27ac0 < 63cd225cc13d782a85e2a73c04d0d350153eada1 ; affected adf0398cee86643b8eacde95f17d073d022f782c < 107c826e4ef9ec5ad8f60e6fe64d8d5325ba508f ; affected adf0398cee86643b8eacde95f17d073d022f782c < e8a5baff5be273ca07771fd2b9bb1f2a4152917b
Linux · Linuxaffected 6.9 ; unaffected 0 < 6.9 ; unaffected 5.10.259 ≤ 5.10.* ; unaffected 5.15.210 ≤ 5.15.* ; unaffected 6.1.176 ≤ 6.1.* ; unaffected 6.6.143 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD