In the Linux kernel, the following vulnerability has been resolved:
sunrpc: fix cache_request leak in cache_release
When a reader's file descriptor is closed while in the middle of reading
a cache_request (rp->offset != 0), cache_release() decrements the
request's readers count but never checks whether it should free the
request.
In cache_read(), when readers drops to 0 and CACHE_PENDING is clear, the
cache_request is removed from the queue and freed along with its buffer
and cache_head reference. cache_release() lacks this cleanup.
The only other path that frees requests with readers == 0 is
cache_dequeue(), but it runs only when CACHE_PENDING transitions from
set to clear. If that transition already happened while readers was
still non-zero, cache_dequeue() will have skipped the request, and no
subsequent call will clean it up.
Add the same cleanup logic from cache_read() to cache_release(): after
decrementing readers, check if it reached 0 with CACHE_PENDING clear,
and if so, dequeue and free the cache_request.
References
Configurations
Configuration 1 (hide)
|
History
20 May 2026, 12:31
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
|
| CWE | CWE-401 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/17ad31b3a43b72aec3a3d83605891e1397d0d065 - Patch | |
| References | () https://git.kernel.org/stable/c/1dfedb293943e491379c9302b428e6f920a73d12 - Patch | |
| References | () https://git.kernel.org/stable/c/301670dcd098c1fe5c2fe90fb3c7a8f4814d2351 - Patch | |
| References | () https://git.kernel.org/stable/c/373457de14281c1fc7cace6fc4c8a267fc176673 - Patch | |
| References | () https://git.kernel.org/stable/c/41f6ba6c98a618043d2cd71030bf9a752dfab8b2 - Patch | |
| References | () https://git.kernel.org/stable/c/7bcd5e318876ac638c8ceade7a648e76ac8c48e1 - Patch | |
| References | () https://git.kernel.org/stable/c/be5c35960e5ead70862736161836e2d1bc7352dc - Patch | |
| References | () https://git.kernel.org/stable/c/f18c1f2a88ca91357916997cdb0f7adaf14fc497 - Patch |
18 Apr 2026, 09:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
03 Apr 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-03 16:16
Updated : 2026-05-20 12:31
NVD link : CVE-2026-31400
Mitre link : CVE-2026-31400
CVE.ORG link : CVE-2026-31400
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-401
Missing Release of Memory after Effective Lifetime