Medium [CVE-2026-68328] Check resource mutex allocation
This medium-severity Red Hat Linux advisory covers CVE-2026-68328 affecting Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4, Red Hat package: kernel-rt.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Android app · Google Play
Monitor future Red Hat Linux CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.
Summary
In the Linux kernel, the following vulnerability has been resolved: nfp: Check resource mutex allocation nfp_cpp_resource_find() allocates a CPP mutex handle for the matching resource-table entry and then reports success. nfp_resource_try_acquire() immediately passes that handle to nfp_cpp_mutex_trylock().
However, nfp_cpp_mutex_alloc() returns NULL on failure. Do the same for the resource mutex and fail the lookup before publishing the rest of the resource handle.
This issue was found by a static analysis checker and confirmed by manual source review. However, the `nfp_cpp_resource_find()` function might still report success, leading to a subsequent attempt to dereference the NULL pointer by `nfp_resource_try_acquire()`.
This can allow a local attacker to cause a system crash, resulting in a denial of service. This issue affects systems using Netronome NFP network adapters.
When CPP mutex allocation fails during resource lookup, the driver still reports success and later dereferences a NULL mutex pointer. Systems without NFP hardware are not affected.
Red Hat severity: Low — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-476.
Affected Red Hat products: Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4. Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: kernel-rt.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
Mitigation checklist
- To mitigate this issue, prevent the nfp module from loading. See https://access.redhat.com/solutions/41278 for instructions.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.