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CVE-2022-49191
mxser: fix xmit_buf leak in activate when LSR == 0xff
Medium5.5EPSS 0.28%
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.28% · top 80% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 6769140d304731f0a3b177470a2adb4bacd9036b – < 376922045009f8ea2d20a8fa3475e95b47c41690
- affected 6769140d304731f0a3b177470a2adb4bacd9036b – < 125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d
- affected 6769140d304731f0a3b177470a2adb4bacd9036b – < 685b6d16bf89595310b5d61394c9b97cc9505c7c
- affected 6769140d304731f0a3b177470a2adb4bacd9036b – < 996291d06851a26678a0fab488b6e1f0677c0576
- affected 6769140d304731f0a3b177470a2adb4bacd9036b – < 2cd05c38a27bee7fb42aa4d43174d68ac55dac0f
- affected 6769140d304731f0a3b177470a2adb4bacd9036b – < b125b08dbee3611f03f53b71471813ed4ccafcdd
- affected 6769140d304731f0a3b177470a2adb4bacd9036b – < 6c9041b2f90c0eace73106f22350e1d2c98f5edc
- affected 6769140d304731f0a3b177470a2adb4bacd9036b – < 6dffc2035fbaada60ca8db59e0962e34f760370a
- affected 6769140d304731f0a3b177470a2adb4bacd9036b – < cd3a4907ee334b40d7aa880c7ab310b154fd5cd4
- affected 2.6.33
- unaffected < 2.6.33
- unaffected 4.9.311 – ≤ 4.9.*
- unaffected 4.14.276 – ≤ 4.14.*
- unaffected 4.19.238 – ≤ 4.19.*
- unaffected 5.4.189 – ≤ 5.4.*
- unaffected 5.10.110 – ≤ 5.10.*
- unaffected 5.15.33 – ≤ 5.15.*
- unaffected 5.16.19 – ≤ 5.16.*
- unaffected 5.17.2 – ≤ 5.17.*
- unaffected 5.18 – ≤ *
References (9)
- https://git.kernel.org/stable/c/376922045009f8ea2d20a8fa3475e95b47c41690 (opens in a new tab)
- https://git.kernel.org/stable/c/125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d (opens in a new tab)
- https://git.kernel.org/stable/c/685b6d16bf89595310b5d61394c9b97cc9505c7c (opens in a new tab)
- https://git.kernel.org/stable/c/996291d06851a26678a0fab488b6e1f0677c0576 (opens in a new tab)
- https://git.kernel.org/stable/c/2cd05c38a27bee7fb42aa4d43174d68ac55dac0f (opens in a new tab)
- https://git.kernel.org/stable/c/b125b08dbee3611f03f53b71471813ed4ccafcdd (opens in a new tab)
- https://git.kernel.org/stable/c/6c9041b2f90c0eace73106f22350e1d2c98f5edc (opens in a new tab)
- https://git.kernel.org/stable/c/6dffc2035fbaada60ca8db59e0962e34f760370a (opens in a new tab)
- https://git.kernel.org/stable/c/cd3a4907ee334b40d7aa880c7ab310b154fd5cd4 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2022-49191)Record last updated .