6.8

CVE-2022-50754: apparmor: fix a memleak in multi_transaction_new()

Deferred
AliasesUBUNTU-CVE-2022-50754DEBIAN-CVE-2022-50754
Published 24-12-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-50754 is a medium (CVSS 6.8) vulnerability in linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 17.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.8/10
010
Medium · v4.0 (OSV · Ubuntu), selected by version preference
EPSS score
0.26%
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 4 · Related 4
SUSE-SU-2026:0263-1SUSE-SU-2026:0317-1SUSE-SU-2026:0411-1SUSE-SU-2026:0617-1

Timeline

  1. 24-12-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix a memleak in multi_transaction_new() In multi_transaction_new(), the variable t is not freed or passed out on the failure of copy_from_user(t->data, buf, size), which could lead to a memleak. Fix this bug by adding a put_multi_transaction(t) in the error path.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.26% 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

No weakness data has been published for this record.

Affected systems

Version check

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

Ubuntu120 products
  • linux< 4.15.0-208.220 | < 5.4.0-144.161 | < 5.15.0-69.76
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.15.0-1153.166 | < 5.4.0-1097.105 | < 5.15.0-1033.37
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.4-1
Linux1 product
  • linux≥ 1dea3b41e84c5923173fe654dcb758a5cb4a46e5, < 11d5fe7da67c3334cefc981297fd5defb78df15c | ≥ 1dea3b41e84c5923173fe654dcb758a5cb4a46e5, < 95e6adc6a7a4761ddf69ad713e55a06a3206309d | ≥ 1dea3b41e84c5923173fe654dcb758a5cb4a46e5, < eb0f78e28cbc8f97439c0a4c80ee5160c1df5ce6 | ≥ 1dea3b41e84c5923173fe654dcb758a5cb4a46e5, < 935d86b29093e75b6c547d90b3979c2c2d23f1c4 | ≥ 1dea3b41e84c5923173fe654dcb758a5cb4a46e5, < 775a37ffa9f4681c4ad84c8634a7eec8af7098d4 | ≥ 1dea3b41e84c5923173fe654dcb758a5cb4a46e5, < 88989932c2269ea66074f52a6213598838f8b9e7 | ≥ 1dea3b41e84c5923173fe654dcb758a5cb4a46e5, < 3d27a436e294ac5d7a51bd5348ca63a42a468b35 | ≥ 1dea3b41e84c5923173fe654dcb758a5cb4a46e5, < c73275cf6834787ca090317f1d20dbfa3b7f05aa | 4.13

3 vendors · 122 products

References

11 links
Show all 11 references