CVE-2026-74395
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)
RDMA/mlx5: Fix devx subscribe-event unwind NULL dereference
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix devx subscribe-event unwind NULL dereference MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT() links event_sub into sub_list before initializing the fields used by the shared error path. If eventfd_ctx_fdget() then fails, the unwind path dereferences event_sub->ev_file in uverbs_uobject_put() and calls subscribe_event_xa_dealloc() with an unset xa_key_level1. subscribe_event_xa_alloc() creates the XA entry exactly once for a given key_level1, on the first occurrence of that key. The unwind path must therefore call subscribe_event_xa_dealloc() exactly once for it as well. Enforce that by adding devx_key_in_sub_list() and calling subscribe_event_xa_dealloc() only when the last matching pending entry is being cleaned up.
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) |
|---|---|---|---|---|---|
| 7597385371425febdaa8c6a1da3625d4ffff16f5 | affected | git | 6e15b770461eeaa0ff73934922cb670a6a9db04e | Unavailable | None listed |
| 7597385371425febdaa8c6a1da3625d4ffff16f5 | affected | git | 9be9aca28424228586fe9211c373ebdb826ebb6c | Unavailable | None listed |
| 7597385371425febdaa8c6a1da3625d4ffff16f5 | affected | git | f345e744b6b087188cde2377da5cbe9713b61353 | Unavailable | None listed |
| 7597385371425febdaa8c6a1da3625d4ffff16f5 | affected | git | 1025dc2f7ba29b04b8687790fa91f9cd1a53141e | Unavailable | None listed |
| 7597385371425febdaa8c6a1da3625d4ffff16f5 | affected | git | 7921821fc2b19c01588311f6e7468ae5b68b1f61 | Unavailable | None listed |
| 7597385371425febdaa8c6a1da3625d4ffff16f5 | affected | git | 5100febf8e9d6c8c5ba8dc6534c6a5e3376e5989 | Unavailable | None listed |
| 7597385371425febdaa8c6a1da3625d4ffff16f5 | affected | git | 78b9589fda266c71f0f9d0c858d4fa7381a890a5 | Unavailable | None listed |
| 7597385371425febdaa8c6a1da3625d4ffff16f5 | affected | git | 43f8f7946814c8e5f464518246fdbc69b6e32326 | 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) |
|---|---|---|---|---|---|
| 5.3 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.3 | Unavailable | None listed |
| 5.10.261 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.212 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.97 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.40 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.5 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |