5.5

CVE-2022-49191: mxser: fix xmit_buf leak in activate when LSR == 0xff

Analyzed
AliasesUBUNTU-CVE-2022-49191DEBIAN-CVE-2022-49191
Published 26-02-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-49191 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 20% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.28%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
SUSE-SU-2025:1293-1

Timeline

  1. 26-02-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.28% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu106 products
  • linuxAll versions (No fix recorded) | < 4.15.0-189.200 | < 5.4.0-117.132 | < 5.15.0-37.39
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1137.148 | < 5.4.0-1078.84 | < 5.15.0-1011.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 6769140d304731f0a3b177470a2adb4bacd9036b, < 376922045009f8ea2d20a8fa3475e95b47c41690 | ≥ 6769140d304731f0a3b177470a2adb4bacd9036b, < 125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d | ≥ 6769140d304731f0a3b177470a2adb4bacd9036b, < 685b6d16bf89595310b5d61394c9b97cc9505c7c | ≥ 6769140d304731f0a3b177470a2adb4bacd9036b, < 996291d06851a26678a0fab488b6e1f0677c0576 | ≥ 6769140d304731f0a3b177470a2adb4bacd9036b, < 2cd05c38a27bee7fb42aa4d43174d68ac55dac0f | ≥ 6769140d304731f0a3b177470a2adb4bacd9036b, < b125b08dbee3611f03f53b71471813ed4ccafcdd | ≥ 6769140d304731f0a3b177470a2adb4bacd9036b, < 6c9041b2f90c0eace73106f22350e1d2c98f5edc | ≥ 6769140d304731f0a3b177470a2adb4bacd9036b, < 6dffc2035fbaada60ca8db59e0962e34f760370a | ≥ 6769140d304731f0a3b177470a2adb4bacd9036b, < cd3a4907ee334b40d7aa880c7ab310b154fd5cd4 | 2.6.33
  • linux_kernel≥ 2.6.33, < 4.9.311 | ≥ 4.10, < 4.14.276 | ≥ 4.15, < 4.19.238 | ≥ 4.20, < 5.4.189 | ≥ 5.5, < 5.10.110 | ≥ 5.11, < 5.15.33 | ≥ 5.16, < 5.16.19 | ≥ 5.17, < 5.17.2
Debian1 product
  • linux< 5.17.3-1

3 vendors · 109 products

References

13 links
Show all 13 references