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CVE-2023-53745· NVD / CVE Program· CNA Linux

um: vector: Fix memory leak in vector_config

In the Linux kernel, the following vulnerability has been resolved: um: vector: Fix memory leak in vector_config If the return value of the uml_parse_vector_ifspec function is NULL, we should call kfree(params) to prevent memory leak.

—No exploit Fix available
Published
Dec 7, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 9th percentile
CWE
—
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Action score

0

Monitor

Low priority for now.

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

Affected systems

—

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

    • 4.17affected
    • 49da7e64f33e80edffb1a9eeb230fa4c3f42dffb and later · before 5c49fb5ad01104acc584405572abf6616d45148eaffected · git
    • 49da7e64f33e80edffb1a9eeb230fa4c3f42dffb and later · before 6480c3a12755bf85d6738ab60967e89b809c701aaffected · git
    • 49da7e64f33e80edffb1a9eeb230fa4c3f42dffb and later · before f2b9c4544e3bd60f353732291300097b0e8d8454affected · git
    • 49da7e64f33e80edffb1a9eeb230fa4c3f42dffb and later · before 276a7298af6a801e9a865282605a79303365ec66affected · git
    • 49da7e64f33e80edffb1a9eeb230fa4c3f42dffb and later · before c8583b4655aab44a9796b5c4a681ddcc6fe2f0d0affected · git
    • 49da7e64f33e80edffb1a9eeb230fa4c3f42dffb and later · before 634a9c139cc1362f6a9cc6cbfe442dbb60ff9f3faffected · git
    • 49da7e64f33e80edffb1a9eeb230fa4c3f42dffb and later · before 8f88c73afe481f93d40801596927e8c0047b6d96affected · git
    • before 4.17not affected · semver
    • 4.19.276 and later · up to and including 4.19.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.20-16.1.20-1

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
  • CVE-2026-74309vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
    40Plan
  • CVE-2026-74280crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
    40Plan
  • CVE-2026-74279crypto: cavium/cpt - fix DMA cleanup using wrong loop index
    40Plan

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 Linux276a7298af6a801e9a865282605a79303365ec66Vendor (CNA)
Linux Linux5c49fb5ad01104acc584405572abf6616d45148eVendor (CNA)
Linux Linux634a9c139cc1362f6a9cc6cbfe442dbb60ff9f3fVendor (CNA)
Linux Linux6480c3a12755bf85d6738ab60967e89b809c701aVendor (CNA)
Linux Linux8f88c73afe481f93d40801596927e8c0047b6d96Vendor (CNA)
Linux Linuxc8583b4655aab44a9796b5c4a681ddcc6fe2f0d0Vendor (CNA)
Linux Linuxf2b9c4544e3bd60f353732291300097b0e8d8454Vendor (CNA)
Debian:linux6.1.20-1 · 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.

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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.

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

  1. Fix✗ → ✓

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References

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

All records