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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.25% (FIRST EPSS).
  • Fixed version: Linux Linux 11d5fe7da67c3334cefc981297fd5defb78df15c, 3d27a436e294ac5d7a51bd5348ca63a42a468b35, 775a37ffa9f4681c4ad84c8634a7eec8af7098d4.

Low priority for now. Upgrade to Linux Linux 11d5fe7da67c3334cefc981297fd5defb78df15c, 3d27a436e294ac5d7a51bd5348ca63a42a468b35, 775a37ffa9f4681c4ad84c8634a7eec8af7098d4 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

—No exploit Fix available
Published
Dec 24, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 17th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.13affected
    • 1dea3b41e84c5923173fe654dcb758a5cb4a46e5 and later · before 11d5fe7da67c3334cefc981297fd5defb78df15caffected · git
    • 1dea3b41e84c5923173fe654dcb758a5cb4a46e5 and later · before 95e6adc6a7a4761ddf69ad713e55a06a3206309daffected · git
    • 1dea3b41e84c5923173fe654dcb758a5cb4a46e5 and later · before eb0f78e28cbc8f97439c0a4c80ee5160c1df5ce6affected · git
    • 1dea3b41e84c5923173fe654dcb758a5cb4a46e5 and later · before 935d86b29093e75b6c547d90b3979c2c2d23f1c4affected · git
    • 1dea3b41e84c5923173fe654dcb758a5cb4a46e5 and later · before 775a37ffa9f4681c4ad84c8634a7eec8af7098d4affected · git
    • 1dea3b41e84c5923173fe654dcb758a5cb4a46e5 and later · before 88989932c2269ea66074f52a6213598838f8b9e7affected · git
    • 1dea3b41e84c5923173fe654dcb758a5cb4a46e5 and later · before 3d27a436e294ac5d7a51bd5348ca63a42a468b35affected · git
    • 1dea3b41e84c5923173fe654dcb758a5cb4a46e5 and later · before c73275cf6834787ca090317f1d20dbfa3b7f05aaaffected · git
    • before 4.13not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2022-50752Dec 24, 2025 · md/raid5: Remove unnecessary bio_put() in raid5_read_one_chunk()
    31Monitor
  • ← EarlierCVE-2022-50753Dec 24, 2025 · f2fs: fix to do sanity check on summary info
    31Monitor
  • Later →CVE-2022-50757Dec 24, 2025 · media: camss: Clean up received buffers on failed start of streaming
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux11d5fe7da67c3334cefc981297fd5defb78df15cVendor (CNA)
Linux Linux3d27a436e294ac5d7a51bd5348ca63a42a468b35Vendor (CNA)
Linux Linux775a37ffa9f4681c4ad84c8634a7eec8af7098d4Vendor (CNA)
Linux Linux88989932c2269ea66074f52a6213598838f8b9e7Vendor (CNA)
Linux Linux935d86b29093e75b6c547d90b3979c2c2d23f1c4Vendor (CNA)
Linux Linux95e6adc6a7a4761ddf69ad713e55a06a3206309dVendor (CNA)
Linux Linuxc73275cf6834787ca090317f1d20dbfa3b7f05aaVendor (CNA)
Linux Linuxeb0f78e28cbc8f97439c0a4c80ee5160c1df5ce6Vendor (CNA)
debian:linux6.1.4-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records