CVE-2024-56605

Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create()

State: Published
Severity: 7.8 High
Published: Dec 27, 2024
Updated: Aug 5, 2026
Reserved: Dec 27, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create()

bt_sock_alloc() allocates the sk object and attaches it to the provided sock object. On error l2cap_sock_alloc() frees the sk object, but the dangling pointer is still attached to the sock object, which may create use-after-free in other code.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
LinuxLinux	49dfbb9129c4edb318578de35cc45c555df37884 to before f6ad641646b67f29c7578dcd6c25813c7dcbf51eAffected 49dfbb9129c4edb318578de35cc45c555df37884 to before daa13175a6dea312a76099066cb4cbd4fc959a84Affected 49dfbb9129c4edb318578de35cc45c555df37884 to before a8677028dd5123e5e525b8195483994d87123de4Affected 49dfbb9129c4edb318578de35cc45c555df37884 to before bb2f2342a6ddf7c04f9aefbbfe86104cd138e629Affected 49dfbb9129c4edb318578de35cc45c555df37884 to before 8ad09ddc63ace3950ac43db6fbfe25b40f589dd6Affected 49dfbb9129c4edb318578de35cc45c555df37884 to before 61686abc2f3c2c67822aa23ce6f160467ec83d35Affected 49dfbb9129c4edb318578de35cc45c555df37884 to before 7c4f78cdb8e7501e9f92d291a7d956591bf73be9Affected
LinuxLinux	3.6Affected before 3.6Not affected 5.4.287 through 5.4.Not affected 5.10.231 through 5.10.Not affected 5.15.174 through 5.15.Not affected 6.1.120 through 6.1.Not affected 6.6.66 through 6.6.Not affected 6.12.5 through 6.12.Not affected 6.13 and laterNot affected

Product

Versions

LinuxLinux

49dfbb9129c4edb318578de35cc45c555df37884 to before f6ad641646b67f29c7578dcd6c25813c7dcbf51eAffected
49dfbb9129c4edb318578de35cc45c555df37884 to before daa13175a6dea312a76099066cb4cbd4fc959a84Affected
49dfbb9129c4edb318578de35cc45c555df37884 to before a8677028dd5123e5e525b8195483994d87123de4Affected
49dfbb9129c4edb318578de35cc45c555df37884 to before bb2f2342a6ddf7c04f9aefbbfe86104cd138e629Affected
49dfbb9129c4edb318578de35cc45c555df37884 to before 8ad09ddc63ace3950ac43db6fbfe25b40f589dd6Affected
49dfbb9129c4edb318578de35cc45c555df37884 to before 61686abc2f3c2c67822aa23ce6f160467ec83d35Affected
49dfbb9129c4edb318578de35cc45c555df37884 to before 7c4f78cdb8e7501e9f92d291a7d956591bf73be9Affected

LinuxLinux

3.6Affected
before 3.6Not affected
5.4.287 through 5.4.*Not affected
5.10.231 through 5.10.*Not affected
5.15.174 through 5.15.*Not affected
6.1.120 through 6.1.*Not affected
6.6.66 through 6.6.*Not affected
6.12.5 through 6.12.*Not affected
6.13 and laterNot affected

References

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