CVE-2026-92520

CVE CVE-2026-92520EUVD EUVD-2026-82141Published 2026-09-17T16:10:27.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: bpf: Zero queue and stack outputs on lock failure Queue and stack pop/peek helpers accept an uninitialized output buffer because the verifier expects the helper to initialize it. The empty-map error path clears the buffer, but a failed lock acquisition returns -EBUSY without writing it. Clear the output before returning -EBUSY so BPF programs cannot observe uninitialized stack contents after a failed helper call.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

• Linux — Linux 388c9d3eefaea99828ee5000c693128a5b41ee7c; 232f0ba4d69263af5912e279fcc32fef2882b1dc; e388671635acf470f0986d874389148fd234620b; 6.1.56 <6.2; 5.15.134 <5.16; 5.4.258 <5.5; patch: 6.18.52; 6.6; 40e34ea01748e5b8afdd40a172868be1e1ab0ede; a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 <7ac6e1ae41a09f1dd4baeeff1d028ae49ee01232; patch: 7.3-rc1; a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 <1534c4bff3aaca19c4c9a82f93e9b81f7c983de3; patch: 7.2.6; patch: 0; acabf5df49aa3a4f9c96200102d893351b511a88; 6.5.6 <6.6; 5.10.198 <5.11; a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 <e2396b8a562073787e627a5f483f1bc5c452fa6a

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.