In the Linux kernel, the following vulnerability has been resolved:
bpf: return VMA snapshot from task_vma iterator
Holding the per-VMA lock across the BPF program body creates a lock
ordering problem when helpers acquire locks that depend on mmap_lock:
vm_lock -> i_rwsem -> mmap_lock -> vm_lock
Snapshot the VMA under the per-VMA lock in _next() via memcpy(), then
drop the lock before returning. The BPF program accesses only the
snapshot.
The verifier only trusts vm_mm and vm_file pointers (see
BTF_TYPE_SAFE_TRUSTED_OR_NULL in verifier.c). vm_file is reference-
counted with get_file() under the lock and released via fput() on the
next iteration or in _destroy(). vm_mm is already correct because
lock_vma_under_rcu() verifies vma->vm_mm == mm. All other pointers
are left as-is by memcpy() since the verifier treats them as untrusted.
References
Configurations
Configuration 1 (hide)
|
History
23 Jul 2026, 18:36
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/13860ca37b8df0b856ee1ce3bdbd7c327d5f53e8 - Patch | |
| References | () https://git.kernel.org/stable/c/4cbee026db54cad39c39db4d356100cb133412b3 - Patch | |
| References | () https://git.kernel.org/stable/c/592226d138378601ae28eb890e2bbc23ec3600f7 - Patch | |
| References | () https://git.kernel.org/stable/c/83b8802c034e843b83a3e1ef6f30cdd4e9ec291c - Patch | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CWE | NVD-CWE-noinfo | |
| First Time |
Linux linux Kernel
Linux |
|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
24 Jun 2026, 17:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-24 17:17
Updated : 2026-07-23 18:36
NVD link : CVE-2026-53084
Mitre link : CVE-2026-53084
CVE.ORG link : CVE-2026-53084
JSON object : View
Products Affected
linux
- linux_kernel
CWE