Answer in brief
CVE-2026-93137 records a High severity (CVSS 7.8) vulnerability in bpf: Fix use-after-free on mm_struct in bpf_find_vma(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=7c7e3d31e7856a8260a254f8c71db416f7f9f5a1 <db347840d6b6ee9bb9b8e4a985d4b4419f9f3200 || >=7c7e3d31e7856a8260a254f8c71db416f7f9f5a1 <8e1101fc4118019a69c96ced4aec93164f89cbd5 || >=7c7e3d31e7856a8260a254f8c71db416f7f9f5a1 <c7ad910e987008e125eeff448892e86852173384 || >=7c7e3d31e7856a8260a254f8c71db416f7f9f5a1 <86d54cf069fc5ae2e111c87933bebf6eb527978e || >=7c7e3d31e7856a8260a254f8c71db416f7f9f5a1 <2b2a903bee56d312539046d9defa8023eec94760 || >=7c7e3d31e7856a8260a254f8c71db416f7f9f5a1 <47b079e2117a2ee52e21f8b72935900c702fc0b5 | db347840d6b6ee9bb9b8e4a985d4b4419f9f3200, 8e1101fc4118019a69c96ced4aec93164f89cbd5, c7ad910e987008e125eeff448892e86852173384, 86d54cf069fc5ae2e111c87933bebf6eb527978e, 2b2a903bee56d312539046d9defa8023eec94760, 47b079e2117a2ee52e21f8b72935900c702fc0b5 |
| Linux/Linuxgeneric | 5.17 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix use-after-free on mm_struct in bpf_find_vma() bpf_find_vma() reads task->mm and calls mmap_read_trylock(mm) without holding a reference on the mm. On a foreign task, a concurrent exit_mm() can free the mm_struct between the lockless read and the trylock, resulting in a use-after-free. mm_struct is not SLAB_TYPESAFE_BY_RCU. For the current task, task->mm is stable. For a foreign task, pin the mm under task->alloc_lock and release it with mmput_async(), mirroring commit d8e27d2d22b6 ("bpf: fix mm lifecycle in open-coded task_vma iterator"). Use spin_trylock() instead of get_task_mm() so BPF context does not block on alloc_lock. Reject irqs-disabled contexts and !CONFIG_MMU on the foreign-task path because dropping the mm reference is not safe there. Race: CPU0 (BPF program) CPU1 (exiting task) ============================ ========================== bpf_find_vma(foreign_task): mm = task->mm exit_mm(): task->mm = NULL mmput(mm) -> frees mm_struct mmap_read_trylock(mm) // UAF on mm
Quoted source text, attributed separately from HOL analysis.