CVE-2022-50329

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq Commit 64dc8c732f5c ("block, bfq: fix possible uaf for 'bfqq->bic'") will access 'bic->bfqq' in bic_set_bfqq(), however, bfq_exit_icq_bfqq() can free bfqq first, and then call bic_set_bfqq(), which will cause uaf. Fix the problem by moving bfq_exit_bfqq() behind bic_set_bfqq().

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1425f1bb5df5239021fd09ebc2a5e8070e705d36	Patch
https://git.kernel.org/stable/c/1ed959fef5b1c6f1a7a3fbea543698c30ebd6678	Patch
https://git.kernel.org/stable/c/246cf66e300b76099b5dbd3fdd39e9a5dbc53f02	Patch
https://git.kernel.org/stable/c/7949b0df3dd9f4817ed4a4e989fa9ee81df6205f	Patch
https://git.kernel.org/stable/c/cfe5b38c37720313eff0dec5517442c7ab3c9a20	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel:5.15.86:::::::*
	cpe:2.3:o:linux:linux_kernel:6.0.16:::::::*
	cpe:2.3:o:linux:linux_kernel:6.1.2:::::::*
	cpe:2.3:o:linux:linux_kernel:6.2:rc1::::::

History

No history.

Information

Published : 2025-09-15 15:15

Updated : 2025-12-04 13:43

NVD link : CVE-2022-50329

Mitre link : CVE-2022-50329

CVE.ORG link : CVE-2022-50329

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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