Bug 2376408 (CVE-2025-38204)

Summary: CVE-2025-38204 kernel: jfs: fix array-index-out-of-bounds read in add_missing_indices
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-07-04 14:04:29 UTC 
In the Linux kernel, the following vulnerability has been resolved:

jfs: fix array-index-out-of-bounds read in add_missing_indices

stbl is s8 but it must contain offsets into slot which can go from 0 to
127.

Added a bound check for that error and return -EIO if the check fails.
Also make jfs_readdir return with error if add_missing_indices returns
with an error.
Comment 1 Mauro Matteo Cascella 2025-07-04 18:44:01 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025070419-CVE-2025-38204-c216@gregkh/T