CVE-2023-54227
- Source
- https://cve.org/CVERecord?id=CVE-2023-54227
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54227.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-54227
- Downstream
- Published
- 2025-12-30T12:11:20.207Z
- Modified
- 2026-01-05T21:16:53.909559Z
- Summary
- blk-mq: fix tags leak when shrink nr_hw_queues
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
blk-mq: fix tags leak when shrink nrhwqueues
Although we don't need to realloc set->tags[] when shrink nrhwqueues, we need to free them. Or these tags will be leaked.
How to reproduce: 1. mount -t configfs configfs /mnt 2. modprobe nullblk nrdevices=0 submitqueues=8 3. mkdir /mnt/nullb/nullb0 4. echo 1 > /mnt/nullb/nullb0/power 5. echo 4 > /mnt/nullb/nullb0/submitqueues 6. rmdir /mnt/nullb/nullb0
In step 4, will alloc 9 tags (8 submit queues and 1 poll queue), then in step 5, newnrhw_queues = 5 (4 submit queues and 1 poll queue). At last in step 6, only these 5 tags are freed, the other 4 tags leaked.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54227.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/c0ef7493e68b8896806a2f598fcffbaa97333405
- https://git.kernel.org/stable/c/e1dd7bc93029024af5688253b0c05181d6e01f8e
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54227.json
- https://nvd.nist.gov/vuln/detail/CVE-2023-54227
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda846a8e6c9a5949582c5a6a8bbc83a7d27fd891eFixedc0ef7493e68b8896806a2f598fcffbaa97333405Fixede1dd7bc93029024af5688253b0c05181d6e01f8e
Affected versions
v5.*
v5.15
v5.15-rc7
v5.16
v5.16-rc1
v5.16-rc2
v5.16-rc3
v5.16-rc4
v5.16-rc5
v5.16-rc6
v5.16-rc7
v5.16-rc8
v5.17
v5.17-rc1
v5.17-rc2
v5.17-rc3
v5.17-rc4
v5.17-rc5
v5.17-rc6
v5.17-rc7
v5.17-rc8
v5.18
v5.18-rc1
v5.18-rc2
v5.18-rc3
v5.18-rc4
v5.18-rc5
v5.18-rc6
v5.18-rc7
v5.19
v5.19-rc1
v5.19-rc2
v5.19-rc3
v5.19-rc4
v5.19-rc5
v5.19-rc6
v5.19-rc7
v5.19-rc8
v6.*
v6.0
v6.0-rc1
v6.0-rc2
v6.0-rc3
v6.0-rc4
v6.0-rc5
v6.0-rc6
v6.0-rc7
v6.1
v6.1-rc1
v6.1-rc2
v6.1-rc3
v6.1-rc4
v6.1-rc5
v6.1-rc6
v6.1-rc7
v6.1-rc8
v6.2
v6.2-rc1
v6.2-rc2
v6.2-rc3
v6.2-rc4
v6.2-rc5
v6.2-rc6
v6.2-rc7
v6.2-rc8
v6.3
v6.3-rc1
v6.3-rc2
v6.3-rc3
v6.3-rc4
v6.3-rc5
v6.3-rc6
v6.3-rc7
v6.4
v6.4-rc1
v6.4-rc2
v6.4-rc3
v6.4-rc4
v6.4-rc5
v6.4-rc6
v6.4-rc7
v6.5
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.5.1
v6.5.2
v6.5.3
v6.5.4