CVE-2026-45915

NONECVSS 0.0

0.0

In the Linux kernel, the following vulnerability has been resolved:

fat: avoid parent link count underflow in rmdir

Corrupted FAT images can leave a directory inode with an incorrect i_nlink (e.g. 2 even though subdirectories exist). rmdir then unconditionally calls drop_nlink(dir) and can drive i_nlink to 0, triggering the WARN_ON in drop_nlink().

Add a sanity check in vfat_rmdir() and msdos_rmdir(): only drop the parent link count when it is at least 3, otherwise report a filesystem error.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 7.4%
KEV: Not listed

Published

May 27, 2026

Last Modified

May 27, 2026

References (8)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/17866f8a0822d414cb02e621cf003a7d04396ef8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7fe0de287e931e07cb96ecf1f449b2ebdb0e1115
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8cafcb881364af5ef3a8b9fed4db254054033d8a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/955c5d670b5ae07c78f4345e23a895638db96ce1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9894c79fd9466612d0514be157b5c30cd93aa645
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cd569b87378b9c33ae13c23d6bb9d205d66f7c4b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d0bb592fa9def2bace90ac8926c0a1d6fa8c1aa0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3b7ffa90f613938128432c7b2f35b7aa4bdd86b

Vendor Advisories for CVE-2026-45915(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-2qhg-8p2v-wf99
GitHub Security Advisoriesunknown
In the Linux kernel, the following vulnerability has been resolved: fat: avoid parent link count...

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 14:17 UTCEG score recompute

Frequently asked(4)

What is CVE-2026-45915?

CVE-2026-45915 is a none vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: fat: avoid parent link count underflow in rmdir Corrupted FAT images can leave a directory inode with an incorrect i_nlink (e.g. 2 even though subdirectories exist). rmdir then unconditionally calls dropnlink(dir) and can drive…

When was CVE-2026-45915 disclosed?

CVE-2026-45915 was first published in the National Vulnerability Database on May 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-45915 actively exploited?

CVE-2026-45915 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2026-45915?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45915, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2026-45915

📅 Published

🔄 Last Modified

🔗 References (8)

📣 Vendor Advisories for CVE-2026-45915(1)