Answer in brief
CVE-2026-74305 records a High severity (CVSS 7.8) vulnerability in bpf: Tighten cgroup storage cookie checks for prog arrays. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c1c74584b9b4043c52e41fec415226e582d266a3 <87177497cca90bf4fcfb759eb898560eb5b46a10 || >=66da7cee78590259b400e51a70622ccd41da7bb2 <1c762d28698483ce7c372091f34d86e4d4828652 || >=7acfa07c585e3d7a64654d38f0a5c762877d0b9b <eb73056ce2a6f101ddd3bdba89af6b24ebffff85 || >=41688d1fc5d163a6c2c0e95c0419e2cb31a44648 <9ca06849c4239aa2d580c54651f8588c51cb398b || >=abad3d0bad72a52137e0c350c59542d75ae4f513 <46fbafe3d2d569d828e8d24a7dbe1659f63685cf || >=abad3d0bad72a52137e0c350c59542d75ae4f513 <cb22dc79528eb26a46d346c3118dbd6b14c70609 || >=abad3d0bad72a52137e0c350c59542d75ae4f513 <10627ddc0167aab5c1c390a10ef461e9937aba08 || 19341d5c59e8c7e8528e40f8663e99d67810473c || >=5.15.192 <5.15.212 || >=6.1.151 <6.1.178 || >=6.6.105 <6.6.145 || >=6.12.46 <6.12.97 || >=6.16.1 <6.17 | 87177497cca90bf4fcfb759eb898560eb5b46a10, 1c762d28698483ce7c372091f34d86e4d4828652, eb73056ce2a6f101ddd3bdba89af6b24ebffff85, 9ca06849c4239aa2d580c54651f8588c51cb398b, 46fbafe3d2d569d828e8d24a7dbe1659f63685cf, cb22dc79528eb26a46d346c3118dbd6b14c70609, 10627ddc0167aab5c1c390a10ef461e9937aba08, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.17 |
| Linux/Linuxgeneric | 6.17 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.