8.8

CVE-2026-63975

Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.7 < 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
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.35% 0.269
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 8.8 2.8 5.9
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/3c8eaa91eb433c450426539290be4ffe282e9f00
Patch
https://git.kernel.org/stable/c/ecfed1e0d8efecad6737a0d83e21d2fd021d8c48
Patch
https://git.kernel.org/stable/c/e6833e737a51db1e5ea0401322acf5e22abd8be6
Patch
https://git.kernel.org/stable/c/6319b38fe69f56ed95680ade485b957a53fff642
Patch
https://git.kernel.org/stable/c/291eec1041c918c460dc9702e44edd17794b4a4b
Patch
https://git.kernel.org/stable/c/41e29548b5e8b5e5fcf708786b3bea67cab107fa
Patch
https://git.kernel.org/stable/c/d153b8898c0051eb8b6a083b35cbe304a5886bd5
Patch
https://git.kernel.org/stable/c/41c2713b204e6cb6a94587bc6bf6935107df5479
Patch