What’s Vulnerable › Vulnerabilities

CVE-2026-93055: UDF symlink pathComponent header OOB read

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-19

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.

Affected products

• Linux kernel: 2.6.12 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/48b2a74317e15f93983c74a5a07245bc94a00d39
• https://git.kernel.org/stable/c/57371e743398e0d485f0f7beede1ade41f812324
• https://git.kernel.org/stable/c/8da8fd3df9fc14cf79ca3a3978d27ba067985111
• https://git.kernel.org/stable/c/b21cb958292ee1e02eb305ff9de09f2f7edd551a
• https://git.kernel.org/stable/c/d23eb7380d1594cda31a5dc8487dd2a5c8def8c7
• https://git.kernel.org/stable/c/d9f49c8b55debf1512f912077b6c759cc8b6d2e0
• https://git.kernel.org/stable/c/ee264227b656218bc1b257d8e4f83467f5f17723
• https://git.kernel.org/stable/c/f44f5f795f1a56249821a05183347ea025855e31

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