CVE-2026-43178
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
procfs: fix possible double mmput() in do_procmap_query()
In the Linux kernel, the following vulnerability has been resolved: procfs: fix possible double mmput() in do_procmap_query() When user provides incorrectly sized buffer for build ID for PROCMAP_QUERY we return with -ENAMETOOLONG error. After recent changes this condition happens later, after we unlocked mmap_lock/per-VMA lock and did mmput(), so original goto out is now wrong and will double-mmput() mm_struct. Fix by jumping further to clean up only vm_file and name_buf.
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) |
|---|---|---|---|---|---|
| b9b97e6aeb534315f9646b2090d1a5024c6a4e82 | affected | git | f9fe092084cd04deea18747f58a2304026e76aaa | Unavailable | None listed |
| cbc03ce3e6ce7e21214c3f02218213574c1a2d08 | affected | git | 8adaff87db143583e08eec4f4e7788f1ef8af94d | Unavailable | None listed |
| b5cbacd7f86f4f62b8813688c8e73be94e8e1951 | affected | git | 90f5e87c9b75833b9ef3a4415b92c0247f28ab2f | Unavailable | None listed |
| b5cbacd7f86f4f62b8813688c8e73be94e8e1951 | affected | git | 61dc9f776705d6db6847c101b98fa4f0e9eb6fa3 | Unavailable | None listed |
| 6.12.70 | affected | semver | 6.12.75 | Unavailable | None listed |
| 6.18.10 | affected | semver | 6.18.16 | 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) |
|---|---|---|---|---|---|
| 6.19 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.19 | Unavailable | None listed |
| 6.12.75 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.16 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.6 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |