CVE-2023-52983
High
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().
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedMar 27, 2025
First seenMar 27, 2025
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel5.15.93, 6.1.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.15.86 ≤ v < 5.15.93, 6.1.2 ≤ v < 6.1.11, 6.0.16 | 5.15.93, 6.1.11 |
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