Bug 2334435 (CVE-2024-56598)

Summary: CVE-2024-56598 kernel: jfs: array-index-out-of-bounds fix in dtReadFirst
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, rhel-process-autobot, vkumar, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's JFS (Journaled File System) implementation. An out-of-bounds array access can occur in the dtReadFirst function when reading directory data from a corrupted or maliciously crafted filesystem. A local user capable of mounting or processing such a filesystem could exploit this vulnerability to crash the system, resulting in a Denial of Service (DoS), or potentially access sensitive kernel memory.
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Description OSIDB Bzimport 2024-12-27 15:01:51 UTC
In the Linux kernel, the following vulnerability has been resolved:

jfs: array-index-out-of-bounds fix in dtReadFirst

The value of stbl can be sometimes out of bounds due
to a bad filesystem. Added a check with appopriate return
of error code in that case.

Comment 1 Avinash Hanwate 2024-12-28 09:02:11 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024122702-CVE-2024-56598-3955@gregkh/T