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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-63948

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

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 06acb75e7ed600d0bbf7bff5628aa8f24a97978c to < 50f1bcaaaa3a80bb1c3472044bc146e8d49d51eeaffected
  • e97e16433eb4533083b096a3824b93a5ca3aee79 to < b5c59a5b469e2a809a2d57eda4ded94235971060affected
  • 8960ff650aec70485b40771cd8e6e8c4cb467d33 to < 8894c2010435a56ce7c6c2a8785860c13554df2faffected
  • 955b5b6c54d95b5e7444dfc81c95c8e013f27ac0 to < 63cd225cc13d782a85e2a73c04d0d350153eada1affected
  • adf0398cee86643b8eacde95f17d073d022f782c to < 107c826e4ef9ec5ad8f60e6fe64d8d5325ba508faffected
  • adf0398cee86643b8eacde95f17d073d022f782c to < e8a5baff5be273ca07771fd2b9bb1f2a4152917baffected
  • adf0398cee86643b8eacde95f17d073d022f782c to < 08d81fe96f80a8e20c7acb573b6a45d901fcf2cdaffected
  • adf0398cee86643b8eacde95f17d073d022f782c to < 9dbd84990394c51f5cee1e8871bb5ff8af5ed939affected
  • e137e2ba96e51902dc2878131823a96bf8e638aeaffected
  • 6466ee65e5b27161c846c73ef407f49dfa1bd1d9affected
  • eb86f955488c39526534211f2610e48a5cf8ead4affected
  • 5.10.217 to < 5.10.259affected
  • 5.15.159 to < 5.15.210affected
  • 6.1.91 to < 6.1.176affected
  • 6.6.31 to < 6.6.143affected
  • 4.19.314 to < 4.20affected
  • 5.4.276 to < 5.5affected
  • 6.8.10 to < 6.9affected

Linux Linux

Default version status: affected

  • 6.9affected
  • 0 to < 6.9unaffected
  • 5.10.259 to ≤ 5.10.*unaffected
  • 5.15.210 to ≤ 5.15.*unaffected
  • 6.1.176 to ≤ 6.1.*unaffected
  • 6.6.143 to ≤ 6.6.*unaffected
  • 6.12.93 to ≤ 6.12.*unaffected
  • 6.18.35 to ≤ 6.18.*unaffected
  • 7.0.12 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References