CVE-2023-52983
block, bfq: fix uaf for bfqq in bic_set_bfqq()
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Mar 27, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
5533742c7cb1bc9b1f0bf401cc397d44a3a9e07a < 7f77f3dab5066a7c9da73d72d1eee895ff84a8d5 094f3d9314d67691cb21ba091c1b528f6e3c4893 < 511c922c5bf6c8a166bea826e702336bc2424140 761564d93c8265f65543acf0a576b32d66bfa26a < cb1876fc33af26d00efdd473311f1b664c77c44e 64dc8c732f5c2b406cc752e6aaa1bd5471159cab < b600de2d7d3a16f9007fad1bdae82a3951a26af2 b22fd72bfebda3956efc4431b60ddfc0a51e03e0
Linux / Linux
5.15.86 < 5.15.93 6.1.2 < 6.1.11
References
git.kernel.org: https://git.kernel.org/stable/c/7f77f3dab5066a7c9da73d72d1eee895ff84a8d5 git.kernel.org: https://git.kernel.org/stable/c/511c922c5bf6c8a166bea826e702336bc2424140 git.kernel.org: https://git.kernel.org/stable/c/cb1876fc33af26d00efdd473311f1b664c77c44e git.kernel.org: https://git.kernel.org/stable/c/b600de2d7d3a16f9007fad1bdae82a3951a26af2