Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: LSM: general protection fault in legacy_parse_param The usual LSM hook "bail on fail" scheme doesn't work for cases where a security module may return an error code indicating that it does not recognize an input. In this particular case Smack sees a mount option that it recognizes, and returns 0. A call to a BPF hook follows, which returns -ENOPARAM, which confuses the caller because Smack has processed its data. The SELinux hook incorrectly returns 1 on success. There was a time when this was correct, however the current expectation is that it return 0 on success. This is repaired.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected da2441fdffbf7602da702aea5bd95ca4dc3d63fc before ddcdda888e14ca451b3ee83d11b65b2a9c8e783b; affected da2441fdffbf7602da702aea5bd95ca4dc3d63fc before 2784604c8c6fc523248f8f80a421c313a9d790b7; affected da2441fdffbf7602da702aea5bd95ca4dc3d63fc before f3f93a1aaafc3032e0a9655fb43deccfb3e953a3; affected da2441fdffbf7602da702aea5bd95ca4dc3d63fc before 00fc07fa0b4a004711b6e1a944f0d2e46f7093b7; affected da2441fdffbf7602da702aea5bd95ca4dc3d63fc before cadae7c5e477aaafcba819b8e4a3d1c1a1503b62; affected da2441fdffbf7602da702aea5bd95ca4dc3d63fc before ecff30575b5ad0eda149aadad247b7f75411fd47 |
| Linux / Linux | affected 5.1; unaffected 0 before 5.1; unaffected 5.4.189 through 5.4.*; unaffected 5.10.110 through 5.10.*; unaffected 5.15.33 through 5.15.*; unaffected 5.16.19 through 5.16.*; unaffected 5.17.2 through 5.17.*; unaffected 5.18 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ddcdda888e14ca451b3ee83d11b65b2a9c8e783b
- https://git.kernel.org/stable/c/2784604c8c6fc523248f8f80a421c313a9d790b7
- https://git.kernel.org/stable/c/f3f93a1aaafc3032e0a9655fb43deccfb3e953a3
- https://git.kernel.org/stable/c/00fc07fa0b4a004711b6e1a944f0d2e46f7093b7
- https://git.kernel.org/stable/c/cadae7c5e477aaafcba819b8e4a3d1c1a1503b62
- https://git.kernel.org/stable/c/ecff30575b5ad0eda149aadad247b7f75411fd47