7.8
CVE-2022-50329
- EPSS 0.02%
- Veröffentlicht 15.09.2025 14:49:32
- Zuletzt bearbeitet 04.12.2025 13:43:46
- Quelle 416baaa9-dc9f-4396-8d5f-8c081f
- CVE-Watchlists
- Unerledigt
block, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq
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().Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version5.15.86
Linux ≫ Linux Kernel Version6.0.16
Linux ≫ Linux Kernel Version6.1.2
Linux ≫ Linux Kernel Version6.2 Updaterc1
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Login| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.02% | 0.042 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 7.8 | 1.8 | 5.9 |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
|
CWE-416 Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.