CVE-2022-49694
- Source
- https://cve.org/CVERecord?id=CVE-2022-49694
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49694.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49694
- Downstream
- Related
- Published
- 2025-02-26T02:24:16Z
- Modified
- 2026-08-12T03:51:27Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- block: disable the elevator int del_gendisk
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
block: disable the elevator int del_gendisk
The elevator is only used for file system requests, which are stopped in del_gendisk. Move disabling the elevator and freeing the scheduler tags to the end of del_gendisk instead of doing that work in disk_release and blk_cleanup_queue to avoid a use after free on q->tag_set from disk_release as the tag_set might not be alive at that point.
Move the blk_qos_exit call as well, as it just depends on the elevator exit and would be the only reason to keep the not exactly cheap queue freeze in disk_release.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49694.json" }- References
-
- https://git.kernel.org/stable/c/50e34d78815e474d410f342fbe783b18192ca518
- https://git.kernel.org/stable/c/f28699fafc047ec33299da01e928c3a0073c5cc6
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49694.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-49694
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git