CVE-2025-39999
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
blk-mq: fix blk_mq_tags double free while nr_requests grown
In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix blk_mq_tags double free while nr_requests grown In the case user trigger tags grow by queue sysfs attribute nr_requests, hctx->sched_tags will be freed directly and replaced with a new allocated tags, see blk_mq_tag_update_depth(). The problem is that hctx->sched_tags is from elevator->et->tags, while et->tags is still the freed tags, hence later elevator exit will try to free the tags again, causing kernel panic. Fix this problem by replacing et->tags with new allocated tags as well. Noted there are still some long term problems that will require some refactor to be fixed thoroughly[1]. [1] https://lore.kernel.org/all/20250815080216.410665-1-yukuai1@huaweicloud.com/
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 58567d8e95c096ad234963df90a2ca518901f4b6 | affected | git | 8faee580d63bc2a54a59dcdb7f9ce4de29384fec | Unavailable | None listed |
| f5a6604f7a4405450e4a1f54e5430f47290c500f | affected | git | 392b1d64911f4de8887fe8b68299fa8bd6e5b923 | Unavailable | None listed |
| f5a6604f7a4405450e4a1f54e5430f47290c500f | affected | git | ba28afbd9eff2a6370f23ef4e6a036ab0cfda409 | Unavailable | None listed |
| 6.16.4 | affected | semver | 6.16.11 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.17 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.17 | Unavailable | None listed |
| 6.16.11 | unaffected | semver | Unavailable | 6.16.* | None listed |
| 6.17.1 | unaffected | semver | Unavailable | 6.17.* | None listed |
| 6.18 | unaffected | original_commit_for_fix | Unavailable | * | None listed |