CVE-2022-49191 (GCVE-0-2022-49191)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2025-05-04 08:31
VLAI?
Title
mxser: fix xmit_buf leak in activate when LSR == 0xff
Summary
In the Linux kernel, the following vulnerability has been resolved: mxser: fix xmit_buf leak in activate when LSR == 0xff When LSR is 0xff in ->activate() (rather unlike), we return an error. Provided ->shutdown() is not called when ->activate() fails, nothing actually frees the buffer in this case. Fix this by properly freeing the buffer in a designated label. We jump there also from the "!info->type" if now too.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 6769140d304731f0a3b177470a2adb4bacd9036b , < 376922045009f8ea2d20a8fa3475e95b47c41690 (git)
Affected: 6769140d304731f0a3b177470a2adb4bacd9036b , < 125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d (git)
Affected: 6769140d304731f0a3b177470a2adb4bacd9036b , < 685b6d16bf89595310b5d61394c9b97cc9505c7c (git)
Affected: 6769140d304731f0a3b177470a2adb4bacd9036b , < 996291d06851a26678a0fab488b6e1f0677c0576 (git)
Affected: 6769140d304731f0a3b177470a2adb4bacd9036b , < 2cd05c38a27bee7fb42aa4d43174d68ac55dac0f (git)
Affected: 6769140d304731f0a3b177470a2adb4bacd9036b , < b125b08dbee3611f03f53b71471813ed4ccafcdd (git)
Affected: 6769140d304731f0a3b177470a2adb4bacd9036b , < 6c9041b2f90c0eace73106f22350e1d2c98f5edc (git)
Affected: 6769140d304731f0a3b177470a2adb4bacd9036b , < 6dffc2035fbaada60ca8db59e0962e34f760370a (git)
Affected: 6769140d304731f0a3b177470a2adb4bacd9036b , < cd3a4907ee334b40d7aa880c7ab310b154fd5cd4 (git)
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    Linux Linux Affected: 2.6.33
Unaffected: 0 , < 2.6.33 (semver)
Unaffected: 4.9.311 , ≤ 4.9.* (semver)
Unaffected: 4.14.276 , ≤ 4.14.* (semver)
Unaffected: 4.19.238 , ≤ 4.19.* (semver)
Unaffected: 5.4.189 , ≤ 5.4.* (semver)
Unaffected: 5.10.110 , ≤ 5.10.* (semver)
Unaffected: 5.15.33 , ≤ 5.15.* (semver)
Unaffected: 5.16.19 , ≤ 5.16.* (semver)
Unaffected: 5.17.2 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmxser: fix xmit_buf leak in activate when LSR == 0xff\n\nWhen LSR is 0xff in -\u003eactivate() (rather unlike), we return an error.\nProvided -\u003eshutdown() is not called when -\u003eactivate() fails, nothing\nactually frees the buffer in this case.\n\nFix this by properly freeing the buffer in a designated label. We jump\nthere also from the \"!info-\u003etype\" if now too."
        }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/cd3a4907ee334b40d7aa880c7ab310b154fd5cd4"
        }
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      "title": "mxser: fix xmit_buf leak in activate when LSR == 0xff",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49191",
    "datePublished": "2025-02-26T01:55:38.124Z",
    "dateReserved": "2025-02-26T01:49:39.286Z",
    "dateUpdated": "2025-05-04T08:31:56.809Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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