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CVE-2025-68239· NVD / CVE Program· CNA Linux

binfmt_misc: restore write access before closing files opened by open_exec()

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 4.10, 4.15, 4.20.

Low priority for now. Upgrade to Linux Linux 4.10, 4.15, 4.20 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: binfmt_misc: restore write access before closing files opened by open_exec() bm_register_write() opens an executable file using open_exec(), which internally calls do_open_execat() and denies write access on the file to avoid modification while it is being executed. However, when an error occurs, bm_register_write() closes the file using filp_close() directly. This does not restore the write permission, which may cause subsequent write operations on the same file to fail. Fix this by calling exe_file_allow_write_access() before filp_close() to restore the write permission properly.

—No exploit Fix available
Published
Dec 16, 2025
Updated
Oct 15, 2026
EPSS
0.1% · 8th 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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  • 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 you'll hear from us

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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

    • 467a50d5db7deaf656e18a1f633be9ecd94b393a, 4a8b4124ea4156ca52918b66c750a69c6d932aa5, 3fe116e33a855bbfdd32dc207e9be2a41e3ed3a6, c0e0ab60d0b15469e69db93215dad009999f5a5b, 5ab9464a2a3c538eedbb438f1802f2fd98d0953f, d28492be82e19fc69cc69975fc2052b37ef0c821, 5.12affected
    • e7850f4d844e0acfac7e570af611d89deade3146 and later · before 54274ff90488b6c0f595a6518faed3cf0bc966ebaffected · git
    • e7850f4d844e0acfac7e570af611d89deade3146 and later · before 480ac88431703f2adbb8e6b5bd73c3f3cf9f3d7faffected · git
    • e7850f4d844e0acfac7e570af611d89deade3146 and later · before fbab8c08e1a6dbaef81e22d672a7647553101d16affected · git
    • e7850f4d844e0acfac7e570af611d89deade3146 and later · before 6cce7bc7fac8471c832696720d9c8f2a976d9c54affected · git
    • e7850f4d844e0acfac7e570af611d89deade3146 and later · before e785f552ab04dbca01d31f0334f4561240b04459affected · git
    • e7850f4d844e0acfac7e570af611d89deade3146 and later · before 90f601b497d76f40fa66795c3ecf625b6aced9fdaffected · git
    • 4.9.262 and later · before 4.10affected · semver
    • 4.14.226 and later · before 4.15affected · semver
    • 4.19.181 and later · before 4.20affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.170-16.1.170-1
Debian:13linuxbefore 6.12.85-16.12.85-1
Debian:14linuxbefore 6.17.9-16.17.9-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

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Published before and after this one in the same product

  • ← EarlierCVE-2025-68237Dec 16, 2025 · mtdchar: fix integer overflow in read/write ioctls
    0Monitor
  • ← EarlierCVE-2025-68238Dec 16, 2025 · mtd: rawnand: cadence: fix DMA device NULL pointer dereference
    0Monitor
  • Later →CVE-2025-68240Dec 16, 2025 · nilfs2: avoid having an active sc_timer before freeing sci
    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 Linux4.10Vendor (CNA)
Linux Linux4.15Vendor (CNA)
Linux Linux4.20Vendor (CNA)
Linux Linux480ac88431703f2adbb8e6b5bd73c3f3cf9f3d7fVendor (CNA)
Linux Linux5.11Vendor (CNA)
Linux Linux5.12Vendor (CNA)
Linux Linux5.5Vendor (CNA)
Linux Linux54274ff90488b6c0f595a6518faed3cf0bc966ebVendor (CNA)
Linux Linux6cce7bc7fac8471c832696720d9c8f2a976d9c54Vendor (CNA)
Linux Linux90f601b497d76f40fa66795c3ecf625b6aced9fdVendor (CNA)
Linux Linuxe785f552ab04dbca01d31f0334f4561240b04459Vendor (CNA)
Linux Linuxfbab8c08e1a6dbaef81e22d672a7647553101d16Vendor (CNA)
debian:linux6.1.170-1 · 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