CVE-2026-74305
CVE CVE-2026-74305EUVD EUVD-2026-59452Published 2026-08-15T05:58:06.000ZLast changed 2026-08-17T05:45:39.000ZCVSS 7.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: bpf: Tighten cgroup storage cookie checks for prog arrays The fix in commit abad3d0bad72 ("bpf: Fix oob access in cgroup local storage") is still incomplete. The prog-array compatibility check treats a program with no cgroup storage as compatible with any stored storage cookie. This allows a storage-less program to bridge a tail call chain between an entry program and a storage-using callee even though cgroup local storage at runtime still follows the caller's context, that is, A -> B(no storage) -> C(storage) path. Requiring exact cookie equality would break the legitimate case of a storage-less leaf program being tail called from a storage-using one. Instead, only accept a zero storage cookie if the program cannot perform tail calls itself. This keeps A -> B(no storage) working while rejecting the A -> B(no storage) -> C(storage) bridge.
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 5.15.192 <5.15.212; 19341d5c59e8c7e8528e40f8663e99d67810473c; 6.17; patch: 0; 6.12.46 <6.12.97; abad3d0bad72a52137e0c350c59542d75ae4f513 <46fbafe3d2d569d828e8d24a7dbe1659f63685cf; 7acfa07c585e3d7a64654d38f0a5c762877d0b9b <eb73056ce2a6f101ddd3bdba89af6b24ebffff85; patch: 7.2; patch: 6.6.145; patch: 6.1.178; patch: 6.18.40; patch: 7.1.5; 6.16.1 <6.17; patch: 6.12.97; abad3d0bad72a52137e0c350c59542d75ae4f513 <10627ddc0167aab5c1c390a10ef461e9937aba08; 66da7cee78590259b400e51a70622ccd41da7bb2 <1c762d28698483ce7c372091f34d86e4d4828652; 41688d1fc5d163a6c2c0e95c0419e2cb31a44648 <9ca06849c4239aa2d580c54651f8588c51cb398b; patch: 5.15.212; abad3d0bad72a52137e0c350c59542d75ae4f513 <cb22dc79528eb26a46d346c3118dbd6b14c70609; c1c74584b9b4043c52e41fec415226e582d266a3 <87177497cca90bf4fcfb759eb898560eb5b46a10; 6.6.105 <6.6.145; 6.1.151 <6.1.178
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
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