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NVD / CVE Program· CNA Linux

CVE-2023-54146: x86/kexec: Fix double-free of elf header buffer

—No exploit Fix available

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: 0.19% (FIRST EPSS).
  • Fixed version: Linux Linux 4c71a552b97fb4f46eb300224434fe56fcf4f254, 5.15.87, 5.18.

Low priority for now. Upgrade to Linux Linux 4c71a552b97fb4f46eb300224434fe56fcf4f254, 5.15.87, 5.18 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: x86/kexec: Fix double-free of elf header buffer After b3e34a47f989 ("x86/kexec: fix memory leak of elf header buffer"), freeing image->elf_headers in the error path of crash_load_segments() is not needed because kimage_file_post_load_cleanup() will take care of that later. And not clearing it could result in a double-free. Drop the superfluous vfree() call at the error path of crash_load_segments().

Published
Dec 24, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 9th 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 · 0.1%

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  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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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

    • 115ee42a4c2f26ba2b4ace2668a3f004621f6833, f675e3a9189d84a9324ab45b0cb19906c2bc8fcb, 5.19affected
    • 23cf39dccf7653650701a6f39b119e9116a27f1a and later · before 4c71a552b97fb4f46eb300224434fe56fcf4f254affected · git
    • 8765a423a87d74ef24ea02b43b2728fe4039f248 and later · before 554a880a1fff46dd5a355dec21cd77d542a0ddf2affected · git
    • b3e34a47f98974d0844444c5121aaff123004e57 and later · before fbdbf8ac333d3d47c0d9ea81d7d445654431d100affected · git
    • b3e34a47f98974d0844444c5121aaff123004e57 and later · before 5bd3c7abeb69fb4133418b846a1c6dc11313d6f0affected · git
    • b3e34a47f98974d0844444c5121aaff123004e57 and later · before d00dd2f2645dca04cf399d8fc692f3f69b6dd996affected · git
    • 5.15.46 and later · before 5.15.87affected · semver
    • 5.17.14 and later · before 5.18affected · semver
    • 5.18.3 and later · before 5.19affected · semver
    • before 5.19not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.7-16.1.7-1

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-2023-54144Dec 24, 2025 · drm/amdkfd: Fix kernel warning during topology setup
    0Monitor
  • ← EarlierCVE-2023-54145Dec 24, 2025 · bpf: drop unnecessary user-triggerable WARN_ONCE in verifierl log
    0Monitor
  • Later →CVE-2023-54147Dec 24, 2025 · media: platform: mtk-mdp3: Add missing check and free for ida_alloc
    0Monitor

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 Linux4c71a552b97fb4f46eb300224434fe56fcf4f254Vendor (CNA)
Linux Linux5.15.87Vendor (CNA)
Linux Linux5.18Vendor (CNA)
Linux Linux5.19Vendor (CNA)
Linux Linux554a880a1fff46dd5a355dec21cd77d542a0ddf2Vendor (CNA)
Linux Linux5bd3c7abeb69fb4133418b846a1c6dc11313d6f0Vendor (CNA)
Linux Linuxd00dd2f2645dca04cf399d8fc692f3f69b6dd996Vendor (CNA)
Linux Linuxfbdbf8ac333d3d47c0d9ea81d7d445654431d100Vendor (CNA)
debian:linux6.1.7-1 · 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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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.

References

Show all references (4 more)

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

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