VulnerabilityPublished 10 Aug 2026Updated 6 Nov 2026

CVE-2026-68328: Linux kernel · nfp: Check resource mutex allocation

Affects Linux kernelSource CVE Database V5

Compare

Not known to be exploited · fixed in cfa119aa781c4044dab5b4c1e5864600f53a26bc : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:19 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in cfa119aa781c4044dab5b4c1e5864600f53a26bc, a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc, a7dc30b6828c3a30252892827b12b676749f250f +5

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6, < cfa119aa781c4044dab5b4c1e5864600f53a26bc	Fixed in cfa119aa781c4044dab5b4c1e5864600f53a26bc
LinuxLinux	Affected ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6, < a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc	Fixed in a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc
LinuxLinux	Affected ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6, < a7dc30b6828c3a30252892827b12b676749f250f	Fixed in a7dc30b6828c3a30252892827b12b676749f250f
LinuxLinux	Affected ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6, < 423523f96a681428ce6e214eaf47f0d8242319de	Fixed in 423523f96a681428ce6e214eaf47f0d8242319de
LinuxLinux	Affected ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6, < 18737a48acc87e4cbe41d6fea9a3f44eae490e24	Fixed in 18737a48acc87e4cbe41d6fea9a3f44eae490e24
LinuxLinux	Affected ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6, < 6dbd428119cb1fd1b73cf6968c711f4ea964dc8b	Fixed in 6dbd428119cb1fd1b73cf6968c711f4ea964dc8b

Description

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. If that happens for a matching table entry, the resource lookup still returns success and the following trylock dereferences a NULL mutex pointer while opening the resource. nfp_resource_acquire() already treats failure to allocate the table mutex as -ENOMEM. 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.

References

Community reviews

Loading reviews…