Bug 2324320 (CVE-2024-50143)

Summary: CVE-2024-50143 kernel: udf: fix uninit-value use in udf_get_fileshortad
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2024-11-07 10:01:40 UTC 
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
Comment 1 Robb Gatica 2024-11-07 16:18:22 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024110743-CVE-2024-50143-4678@gregkh/T
Comment 2 errata-xmlrpc 2025-05-13 08:33:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:6966 https://access.redhat.com/errata/RHSA-2025:6966