CVE-2022-50329block, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq
Updated under an hour ago ()
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | 5533742c7cb1bc9b1f0bf401cc397d44a3a9e07a builds before 1425f1bb5df5239021fd09ebc2a5e8070e705d36; from 094f3d9314d67691cb21ba091c1b528f6e3c4893 before 7949b0df3dd9f4817ed4a4e989fa9ee81df6205f; from b22fd72bfebda3956efc4431b60ddfc0a51e03e0 before cfe5b38c37720313eff0dec5517442c7ab3c9a20; 761564d93c8265f65543acf0a576b32d66bfa26a builds before 1ed959fef5b1c6f1a7a3fbea543698c30ebd6678; from 64dc8c732f5c2b406cc752e6aaa1bd5471159cab before 246cf66e300b76099b5dbd3fdd39e9a5dbc53f02 | CNA record |
linux linux_kernel linux:linux_kernel | 5.15.86; 6.0.16; 6.1.2; 6.2 | NVD |
References
- https://git.kernel.org/stable/c/1425f1bb5df5239021fd09ebc2a5e8070e705d36patch
- https://git.kernel.org/stable/c/7949b0df3dd9f4817ed4a4e989fa9ee81df6205fpatch
- https://git.kernel.org/stable/c/cfe5b38c37720313eff0dec5517442c7ab3c9a20patch
- https://git.kernel.org/stable/c/1ed959fef5b1c6f1a7a3fbea543698c30ebd6678patch
- https://git.kernel.org/stable/c/246cf66e300b76099b5dbd3fdd39e9a5dbc53f02patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.