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NVD / CVE Program· CNA Linux

CVE-2023-54260: cifs: Fix lost destroy smbd connection when MR allocate failed

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: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 04b7e13b8a13264282f874db5378fc3d3253cfac, 324c0c34fff1affd436e509325cb46739209704e, 46cd6c639cddba2bd2d810ceb16bb20374ad75b0.

Low priority for now. Upgrade to Linux Linux 04b7e13b8a13264282f874db5378fc3d3253cfac, 324c0c34fff1affd436e509325cb46739209704e, 46cd6c639cddba2bd2d810ceb16bb20374ad75b0 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: cifs: Fix lost destroy smbd connection when MR allocate failed If the MR allocate failed, the smb direct connection info is NULL, then smbd_destroy() will directly return, then the connection info will be leaked. Let's set the smb direct connection info to the server before call smbd_destroy().

—No exploit Fix available
Published
Dec 30, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 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 · 0.2%

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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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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

    • 4.16affected
    • c7398583340a6d82b8bb7f7f21edcde27dc6a898 and later · before d303e25887127364a6765eaf7ac68aa2bac518a9affected · git
    • c7398583340a6d82b8bb7f7f21edcde27dc6a898 and later · before 324c0c34fff1affd436e509325cb46739209704eaffected · git
    • c7398583340a6d82b8bb7f7f21edcde27dc6a898 and later · before caac205e0d5b44c4c23a10c6c0976d50ebe16ac2affected · git
    • c7398583340a6d82b8bb7f7f21edcde27dc6a898 and later · before 46cd6c639cddba2bd2d810ceb16bb20374ad75b0affected · git
    • c7398583340a6d82b8bb7f7f21edcde27dc6a898 and later · before c51ae01104b318bf15f3c5097faba5c72addba7aaffected · git
    • c7398583340a6d82b8bb7f7f21edcde27dc6a898 and later · before 04b7e13b8a13264282f874db5378fc3d3253cfacaffected · git
    • c7398583340a6d82b8bb7f7f21edcde27dc6a898 and later · before e9d3401d95d62a9531082cd2453ed42f2740e3fdaffected · git
    • before 4.16not 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

Published before and after this one in the same product

  • ← EarlierCVE-2023-54257Dec 30, 2025 · net: macb: fix a memory corruption in extended buffer descriptor mode
    39Monitor
  • ← EarlierCVE-2023-54259Dec 30, 2025 · soundwire: bus: Fix unbalanced pm_runtime_put() causing usage count underflow
    0Monitor
  • Later →CVE-2023-54261Dec 30, 2025 · drm/amdkfd: Add missing gfx11 MQD manager callbacks
    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 Linux04b7e13b8a13264282f874db5378fc3d3253cfacVendor (CNA)
Linux Linux324c0c34fff1affd436e509325cb46739209704eVendor (CNA)
Linux Linux46cd6c639cddba2bd2d810ceb16bb20374ad75b0Vendor (CNA)
Linux Linuxc51ae01104b318bf15f3c5097faba5c72addba7aVendor (CNA)
Linux Linuxcaac205e0d5b44c4c23a10c6c0976d50ebe16ac2Vendor (CNA)
Linux Linuxd303e25887127364a6765eaf7ac68aa2bac518a9Vendor (CNA)
Linux Linuxe9d3401d95d62a9531082cd2453ed42f2740e3fdVendor (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.

—

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 (6 more)

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

All records