CVE-2026-63975Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp If dcid is received for an already-assigned destination CID the spec requires that both channels to be discarded, but calling l2cap_chan_del may invalidate the tmp cursor created by list_for_each_entry_safe and in fact it is the wrong procedure as the chan->dcid may be assigned previously it really needs to be disconnected. Calling l2cap_chan_clone directly may still lead to l2cap_chan_del so instead schedule l2cap_chan_timeout with delay 0 to close the channel asynchronously.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 15f02b91056253e8cdc592888f431da0731337b8 builds before 3c8eaa91eb433c450426539290be4ffe282e9f00; from 15f02b91056253e8cdc592888f431da0731337b8 before ecfed1e0d8efecad6737a0d83e21d2fd021d8c48; from 15f02b91056253e8cdc592888f431da0731337b8 before e6833e737a51db1e5ea0401322acf5e22abd8be6; from 15f02b91056253e8cdc592888f431da0731337b8 before 6319b38fe69f56ed95680ade485b957a53fff642; from 15f02b91056253e8cdc592888f431da0731337b8 before 291eec1041c918c460dc9702e44edd17794b4a4b; from 15f02b91056253e8cdc592888f431da0731337b8 before 41e29548b5e8b5e5fcf708786b3bea67cab107fa; from 15f02b91056253e8cdc592888f431da0731337b8 before d153b8898c0051eb8b6a083b35cbe304a5886bd5; from 15f02b91056253e8cdc592888f431da0731337b8 before 41c2713b204e6cb6a94587bc6bf6935107df5479 | CNA record |
linux linux_kernel linux:linux_kernel | from 5.7 before 5.10.259; from 5.11 before 5.15.210; from 5.16 before 6.1.176; from 6.2 before 6.6.143; from 6.7 before 6.12.93; from 6.13 before 6.18.35; from 6.19 before 7.0.12; 7.1; and 4 more ranges | NVD |
References
- https://git.kernel.org/stable/c/3c8eaa91eb433c450426539290be4ffe282e9f00patch
- https://git.kernel.org/stable/c/ecfed1e0d8efecad6737a0d83e21d2fd021d8c48patch
- https://git.kernel.org/stable/c/e6833e737a51db1e5ea0401322acf5e22abd8be6patch
- https://git.kernel.org/stable/c/6319b38fe69f56ed95680ade485b957a53fff642patch
- https://git.kernel.org/stable/c/291eec1041c918c460dc9702e44edd17794b4a4bpatch
- https://git.kernel.org/stable/c/41e29548b5e8b5e5fcf708786b3bea67cab107fapatch
- https://git.kernel.org/stable/c/d153b8898c0051eb8b6a083b35cbe304a5886bd5patch
- https://git.kernel.org/stable/c/41c2713b204e6cb6a94587bc6bf6935107df5479patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.