Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c1c74584b9b4043c52e41fec415226e582d266a3 before 87177497cca90bf4fcfb759eb898560eb5b46a10; affected 66da7cee78590259b400e51a70622ccd41da7bb2 before 1c762d28698483ce7c372091f34d86e4d4828652; affected 7acfa07c585e3d7a64654d38f0a5c762877d0b9b before eb73056ce2a6f101ddd3bdba89af6b24ebffff85; affected 41688d1fc5d163a6c2c0e95c0419e2cb31a44648 before 9ca06849c4239aa2d580c54651f8588c51cb398b; affected abad3d0bad72a52137e0c350c59542d75ae4f513 before 46fbafe3d2d569d828e8d24a7dbe1659f63685cf; affected abad3d0bad72a52137e0c350c59542d75ae4f513 before cb22dc79528eb26a46d346c3118dbd6b14c70609; affected abad3d0bad72a52137e0c350c59542d75ae4f513 before 10627ddc0167aab5c1c390a10ef461e9937aba08; affected 19341d5c59e8c7e8528e40f8663e99d67810473c; affected 5.15.192 before 5.15.212; affected 6.1.151 before 6.1.178; affected 6.6.105 before 6.6.145; affected 6.12.46 before 6.12.97; affected 6.16.1 before 6.17 |
| Linux / Linux | affected 6.17; unaffected 0 before 6.17; unaffected 5.15.212 through 5.15.*; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/87177497cca90bf4fcfb759eb898560eb5b46a10
- https://git.kernel.org/stable/c/1c762d28698483ce7c372091f34d86e4d4828652
- https://git.kernel.org/stable/c/eb73056ce2a6f101ddd3bdba89af6b24ebffff85
- https://git.kernel.org/stable/c/9ca06849c4239aa2d580c54651f8588c51cb398b
- https://git.kernel.org/stable/c/46fbafe3d2d569d828e8d24a7dbe1659f63685cf
- https://git.kernel.org/stable/c/cb22dc79528eb26a46d346c3118dbd6b14c70609
- https://git.kernel.org/stable/c/10627ddc0167aab5c1c390a10ef461e9937aba08
ADP enrichment
No English description supplied.
No references supplied.