CVE-2026-63975
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.27% probability · 20th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416, CWE-667
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://git.kernel.org/stable/c/291eec1041c918c460dc9702e44edd17794b4a4bPatch
- https://git.kernel.org/stable/c/3c8eaa91eb433c450426539290be4ffe282e9f00Patch
- https://git.kernel.org/stable/c/41c2713b204e6cb6a94587bc6bf6935107df5479Patch
- https://git.kernel.org/stable/c/41e29548b5e8b5e5fcf708786b3bea67cab107faPatch
- https://git.kernel.org/stable/c/6319b38fe69f56ed95680ade485b957a53fff642Patch
- https://git.kernel.org/stable/c/d153b8898c0051eb8b6a083b35cbe304a5886bd5Patch
- https://git.kernel.org/stable/c/e6833e737a51db1e5ea0401322acf5e22abd8be6Patch
- https://git.kernel.org/stable/c/ecfed1e0d8efecad6737a0d83e21d2fd021d8c48Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.