CVE-2022-50329
N/A
N/A
Summary
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().
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 5533742c7cb1bc9b1f0bf401cc397d44a3a9e07a < 1425f1bb5df5239021fd09ebc2a5e8070e705d36 | affected |
| Linux | Linux | 094f3d9314d67691cb21ba091c1b528f6e3c4893 < 7949b0df3dd9f4817ed4a4e989fa9ee81df6205f | affected |
| Linux | Linux | b22fd72bfebda3956efc4431b60ddfc0a51e03e0 < cfe5b38c37720313eff0dec5517442c7ab3c9a20 | affected |
| Linux | Linux | 761564d93c8265f65543acf0a576b32d66bfa26a < 1ed959fef5b1c6f1a7a3fbea543698c30ebd6678 | affected |
| Linux | Linux | 64dc8c732f5c2b406cc752e6aaa1bd5471159cab < 246cf66e300b76099b5dbd3fdd39e9a5dbc53f02 | affected |
| Linux | Linux | 5.15.86 < 5.15.87 | affected |
| Linux | Linux | 6.0.16 < 6.0.17 | affected |
| Linux | Linux | 6.1.2 < 6.1.3 | affected |
Weaknesses
References
- https://git.kernel.org/stable/c/1425f1bb5df5239021fd09ebc2a5e8070e705d36
- https://git.kernel.org/stable/c/7949b0df3dd9f4817ed4a4e989fa9ee81df6205f
- https://git.kernel.org/stable/c/cfe5b38c37720313eff0dec5517442c7ab3c9a20
- https://git.kernel.org/stable/c/1ed959fef5b1c6f1a7a3fbea543698c30ebd6678
- https://git.kernel.org/stable/c/246cf66e300b76099b5dbd3fdd39e9a5dbc53f02
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