Bug 2320178 (CVE-2024-47677)

Summary: CVE-2024-47677 kernel: exfat: resolve memory leak from exfat_create_upcase_table()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2320323    
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Description OSIDB Bzimport 2024-10-21 12:02:06 UTC 
In the Linux kernel, the following vulnerability has been resolved:

exfat: resolve memory leak from exfat_create_upcase_table()

If exfat_load_upcase_table reaches end and returns -EINVAL,
allocated memory doesn't get freed and while
exfat_load_default_upcase_table allocates more memory, leading to a
memory leak.

Here's link to syzkaller crash report illustrating this issue:
https://syzkaller.appspot.com/text?tag=CrashReport&x=1406c201980000
Comment 1 Michal Findra 2024-10-21 14:23:32 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102106-CVE-2024-47677-714d@gregkh/T