Bug 2421798 (CVE-2025-40345) - CVE-2025-40345 kernel: usb: storage: sddr55: Reject out-of-bound new_pba
Summary: CVE-2025-40345 kernel: usb: storage: sddr55: Reject out-of-bound new_pba
Keywords:
Status: NEW
Alias: CVE-2025-40345
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-12 18:01 UTC by OSIDB Bzimport
Modified: 2025-12-15 20:32 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2025-12-12 18:01:50 UTC
In the Linux kernel, the following vulnerability has been resolved:

usb: storage: sddr55: Reject out-of-bound new_pba

Discovered by Atuin - Automated Vulnerability Discovery Engine.

new_pba comes from the status packet returned after each write.
A bogus device could report values beyond the block count derived
from info->capacity, letting the driver walk off the end of
pba_to_lba[] and corrupt heap memory.

Reject PBAs that exceed the computed block count and fail the
transfer so we avoid touching out-of-range mapping entries.


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