What’s Vulnerable › Vulnerabilities

CVE-2022-48946: udf: Fix preallocation discarding at indirect extent boundary

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-10-21 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: udf: Fix preallocation discarding at indirect extent boundary When preallocation extent is the first one in the extent block, the code would corrupt extent tree header instead. Fix the problem and use udf_delete_aext() for deleting extent to avoid some code duplication.

Affected products

• Linux kernel: before 4.9.337; from 4.10 before 4.14.303; from 4.15 before 4.19.270; from 4.20 before 5.4.229; from 5.5 before 5.10.161; from 5.11 before 5.15.85 — fixed in 4.14.303, 4.19.270, 4.9.337, 5.10.161, 5.15.85, 5.4.229

How to fix

Upgrade to a fixed version: Linux kernel 4.14.303, 4.19.270, 4.9.337, 5.10.161. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/12a88f572d6d94b5c0b72e2d1782cc2e96ac06cf
• https://git.kernel.org/stable/c/1a075f4a549481ce6e8518d8379f193ccec6b746
• https://git.kernel.org/stable/c/4d835efd561dfb9bf5409f11f4ecd428d5d29226
• https://git.kernel.org/stable/c/63dbbd8f1499b0a161e701a04aa50148d60bd1f7
• https://git.kernel.org/stable/c/72f651c96c8aadf087fd782d551bf7db648a8c2e
• https://git.kernel.org/stable/c/7665857f88557c372da35534165721156756f77f
• https://git.kernel.org/stable/c/ae56d9a017724f130cf1a263dd82a78d2a6e3852
• https://git.kernel.org/stable/c/c8b6fa4511a7900db9fb0353b630d4d2ed1ba99c
• https://git.kernel.org/stable/c/cfe4c1b25dd6d2f056afc00b7c98bcb3dd0b1fc3

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