CVE-2022-49180
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 this matter?
Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.26% probability · 18th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/00fc07fa0b4a004711b6e1a944f0d2e46f7093b7Patch
- https://git.kernel.org/stable/c/2784604c8c6fc523248f8f80a421c313a9d790b7Patch
- https://git.kernel.org/stable/c/cadae7c5e477aaafcba819b8e4a3d1c1a1503b62Patch
- https://git.kernel.org/stable/c/ddcdda888e14ca451b3ee83d11b65b2a9c8e783bPatch
- https://git.kernel.org/stable/c/ecff30575b5ad0eda149aadad247b7f75411fd47Patch
- https://git.kernel.org/stable/c/f3f93a1aaafc3032e0a9655fb43deccfb3e953a3Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.