PT-2025-8807 · Linux+6 · Linux Kernel+6
Syzbot
·
Published
2025-01-14
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Updated
2026-04-20
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CVE-2025-21724
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A shift-out-of-bounds issue was found in the
iova bitmap offset to index() function, where shifting the constant 1 by bitmap->mapped.pgshift could result in undefined behavior due to overflow when pgshift exceeds 31. This issue was resolved by updating the constant to 1UL, promoting it to an unsigned long type to match the operand's type.Recommendations
To resolve this issue, update the constant in the
iova bitmap offset to index() function to 1UL to prevent shift-out-of-bounds and potential undefined behavior.Exploit
Fix
Memory Corruption
Out of bounds Read
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Related Identifiers
Affected Products
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu