FKIE_CVE-2022-49180

Vulnerability from fkie_nvd - Published: 2025-02-26 07:00 - Updated: 2025-10-22 17:17
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/00fc07fa0b4a004711b6e1a944f0d2e46f7093b7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2784604c8c6fc523248f8f80a421c313a9d790b7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cadae7c5e477aaafcba819b8e4a3d1c1a1503b62Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ddcdda888e14ca451b3ee83d11b65b2a9c8e783bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ecff30575b5ad0eda149aadad247b7f75411fd47Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f3f93a1aaafc3032e0a9655fb43deccfb3e953a3Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLSM: general protection fault in legacy_parse_param\n\nThe usual LSM hook \"bail on fail\" scheme doesn\u0027t work for cases where\na security module may return an error code indicating that it does not\nrecognize an input.  In this particular case Smack sees a mount option\nthat it recognizes, and returns 0. A call to a BPF hook follows, which\nreturns -ENOPARAM, which confuses the caller because Smack has processed\nits data.\n\nThe SELinux hook incorrectly returns 1 on success. There was a time\nwhen this was correct, however the current expectation is that it\nreturn 0 on success. This is repaired."
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  "id": "CVE-2022-49180",
  "lastModified": "2025-10-22T17:17:09.707",
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          "attackVector": "LOCAL",
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          "baseScore": 5.5,
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          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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