CVE-2026-80928
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)
smack: fix cred UAF in smack_file_send_sigiotask()
In the Linux kernel, the following vulnerability has been resolved: smack: fix cred UAF in smack_file_send_sigiotask() When inspecting the credentials of another task, objective credentials (->real_cred, accessed with __task_cred()) must always be used. Accessing ->cred on a non-current task is forbidden unless that task is being created or destroyed; a task is allowed to change its own ->cred pointer with no synchronization, and changing ->cred should only affect the current syscall. smack_file_send_sigiotask() was accessing both sets of credentials: First tsk->cred, then __task_cred(tsk). Fix it, always access the objective credentials here. I have tested that this bug can lead to a KASAN-reported UAF of struct cred in smack_file_send_sigiotask(), and that this fix prevents the race.
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) |
|---|---|---|---|---|---|
| 3b11a1decef07c19443d24ae926982bc8ec9f4c0 | affected | git | a512366d84e134a9eefc2cc40eeb6e80e2ec162c | Unavailable | None listed |
| 3b11a1decef07c19443d24ae926982bc8ec9f4c0 | affected | git | 7c7fe043f3099d0d35002b248967f75e55345b93 | Unavailable | None listed |
| 3b11a1decef07c19443d24ae926982bc8ec9f4c0 | affected | git | f9c7b1f2b9d8f4176d2632743f51400855978ace | Unavailable | None listed |
| 3b11a1decef07c19443d24ae926982bc8ec9f4c0 | affected | git | b5bcf3adfa27279da4401ab8f1e1a706601a92be | Unavailable | None listed |
| 3b11a1decef07c19443d24ae926982bc8ec9f4c0 | affected | git | ed64aa505875a3b4defd504ee8e59e1949246a62 | Unavailable | None listed |
| 3b11a1decef07c19443d24ae926982bc8ec9f4c0 | affected | git | b791401bf389a1546a830d2b381ca60fe94c7870 | Unavailable | None listed |
| 3b11a1decef07c19443d24ae926982bc8ec9f4c0 | affected | git | fedc88e38ce979a720cd2de042578cb5df3dc8de | 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) |
|---|---|---|---|---|---|
| 2.6.29 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.29 | Unavailable | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.109 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.50 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.4 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |