What’s Vulnerable › Vulnerabilities

CVE-2024-50143: udf: fix uninit-value use in udf_get_fileshortad

• Severity: high (CVSS 7.8 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: 2024-11-07 · updated 2026-08-04
• Weakness: CWE-908

Description

In the Linux kernel, the following vulnerability has been resolved: udf: fix uninit-value use in udf_get_fileshortad Check for overflow when computing alen in udf_current_aext to mitigate later uninit-value use in udf_get_fileshortad KMSAN bug[1]. After applying the patch reproducer did not trigger any issue[2]. [1] https://syzkaller.appspot.com/bug?extid=8901c4560b7ab5c2f9df [2] https://syzkaller.appspot.com/x/log.txt?x=10242227980000

Affected products

• Linux kernel: before 4.19.323; from 4.20 before 5.4.285; from 5.5 before 5.15.170; from 5.16 before 6.1.115; from 6.2 before 6.6.59; from 6.7 before 6.11.6 — fixed in 4.19.323, 5.15.170, 5.4.285, 6.1.115, 6.11.6, 6.6.59

How to fix

Upgrade to a fixed version: Linux kernel 4.19.323, 5.15.170, 5.4.285, 6.1.115. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0ce61b1f6b32df822b59c680cbe8e5ba5d335742
• https://git.kernel.org/stable/c/1ac49babc952f48d82676979b20885e480e69be8
• https://git.kernel.org/stable/c/264db9d666ad9a35075cc9ed9ec09d021580fbb1
• https://git.kernel.org/stable/c/417bd613bdbe791549f7687bb1b9b8012ff111c2
• https://git.kernel.org/stable/c/4fc0d8660e391dcd8dde23c44d702be1f6846c61
• https://git.kernel.org/stable/c/5eb76fb98b3335aa5cca6a7db2e659561c79c32b
• https://git.kernel.org/stable/c/72e445df65a0aa9066c6fe2b8736ba2fcca6dac7
• https://git.kernel.org/stable/c/e52e0b92ed31dc62afbda15c243dcee0bb5bb58d
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

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