Vulnerability 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().
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15.86, < 5.15.93 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/511c922c5bf6c8a166bea826e702336bc2424140Patch
- https://git.kernel.org/stable/c/7f77f3dab5066a7c9da73d72d1eee895ff84a8d5Patch
- https://git.kernel.org/stable/c/b600de2d7d3a16f9007fad1bdae82a3951a26af2Patch
- https://git.kernel.org/stable/c/cb1876fc33af26d00efdd473311f1b664c77c44ePatch
FAQ
What is CVE-2023-52983?
CVE-2023-52983 is a vulnerability with a CVSS score of 7.8 (HIGH). 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->bf...
How severe is CVE-2023-52983?
CVE-2023-52983 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-52983?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.