VulnerabilityPublished 17 Sep 2026Updated 19 Oct 2026

CVE-2026-93055: Linux kernel · UDF Symlink PathComponent Header OOB Read

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f44f5f795f1a56249821a05183347ea025855e31 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f44f5f795f1a56249821a05183347ea025855e31, ee264227b656218bc1b257d8e4f83467f5f17723, d23eb7380d1594cda31a5dc8487dd2a5c8def8c7 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f44f5f795f1a56249821a05183347ea025855e31	Fixed in f44f5f795f1a56249821a05183347ea025855e31
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ee264227b656218bc1b257d8e4f83467f5f17723	Fixed in ee264227b656218bc1b257d8e4f83467f5f17723
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d23eb7380d1594cda31a5dc8487dd2a5c8def8c7	Fixed in d23eb7380d1594cda31a5dc8487dd2a5c8def8c7
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d9f49c8b55debf1512f912077b6c759cc8b6d2e0	Fixed in d9f49c8b55debf1512f912077b6c759cc8b6d2e0
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < b21cb958292ee1e02eb305ff9de09f2f7edd551a	Fixed in b21cb958292ee1e02eb305ff9de09f2f7edd551a
LinuxLinux	Affected ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 57371e743398e0d485f0f7beede1ade41f812324	Fixed in 57371e743398e0d485f0f7beede1ade41f812324

Description

In the Linux kernel, the following vulnerability has been resolved: UDF symlink pathComponent header OOB read udf_symlink_filler() can enter udf_pc_to_char() with a partial pathComponent header. Validate that enough input remains for a complete pathComponent header before accessing it. Reject malformed symlink data that would otherwise make udf_pc_to_char() perform an out-of-bounds read.

References

Community reviews

Loading reviews…