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Review reviewHigh

CVE-2024-50143

Linux Linux, linux kernel

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

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2024.11.07
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

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 product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5eb76fb98b3335aa5cca6a7db2e659561c79c32b, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 417bd613bdbe791549f7687bb1b9b8012ff111c2, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0ce61b1f6b32df822b59c680cbe8e5ba5d335742, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4fc0d8660e391dcd8dde23c44d702be1f6846c61, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 72e445df65a0aa9066c6fe2b8736ba2fcca6dac7, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1ac49babc952f48d82676979b20885e480e69be8, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e52e0b92ed31dc62afbda15c243dcee0bb5bb58d, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 264db9d666ad9a35075cc9ed9ec09d021580fbb1, >= 2.6.12, < 4.19.323, >= 4.20 < 5.4.285, >= 5.5 < 5.15.170, >= 5.16 < 6.1.115, >= 6.2 < 6.6.59, >= 6.7 < 6.11.6, 6.12
Fixed versions
4.19.323, 5.4.285, 5.15.170, 6.1.115, 6.6.59, 6.11.6

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-908