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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-74305 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/10627ddc0167aab5c1c390a10ef461e9937aba08 kernel.org
https://git.kernel.org/stable/c/1c762d28698483ce7c372091f34d86e4d4828652 kernel.org
https://git.kernel.org/stable/c/46fbafe3d2d569d828e8d24a7dbe1659f63685cf kernel.org
https://git.kernel.org/stable/c/87177497cca90bf4fcfb759eb898560eb5b46a10 kernel.org
https://git.kernel.org/stable/c/9ca06849c4239aa2d580c54651f8588c51cb398b kernel.org
https://git.kernel.org/stable/c/cb22dc79528eb26a46d346c3118dbd6b14c70609 kernel.org
https://git.kernel.org/stable/c/eb73056ce2a6f101ddd3bdba89af6b24ebffff85 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-74305
NVD Published Date:
08/15/2026
NVD Last Modified:
08/15/2026
Source:
kernel.org