CVEvulnerability
CVE-2023-52983
7.8 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2025-03-27
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416
Description
In the Linux kernel, the following vulnerability has been resolved:
block, bfq: fix uaf for bfqq in bic_set_bfqq()
After commit 64dc8c732f5c ("block, bfq: fix possible uaf for 'bfqq->bic'"),
bic->bfqq will be accessed in bic_set_bfqq(), however, in some context
bic->bfqq will be freed, and bic_set_bfqq() is called with the freed
bic->bfqq.
Fix the problem by always freeing bfqq after bic_set_bfqq().
Affected configurations
• linux linux kernel (>= 5.15.86 < 5.15.93)
• linux linux kernel (>= 6.1.2 < 6.1.11)
• linux linux kernel 6.0.16
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://git.kernel.org/stable/c/511c922c5bf6c8a166bea826e702336bc2424140 Patch
- https://git.kernel.org/stable/c/7f77f3dab5066a7c9da73d72d1eee895ff84a8d5 Patch
- https://git.kernel.org/stable/c/b600de2d7d3a16f9007fad1bdae82a3951a26af2 Patch
- https://git.kernel.org/stable/c/cb1876fc33af26d00efdd473311f1b664c77c44e Patch