PT-2025-8850 · Linux+9 · Linux Kernel+9
CVE-2025-21738
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Published
2025-01-28
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Updated
2026-05-26
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A bug in the Linux kernel allows writing outside the allocated buffer when a specific SCSI IOCTL SEND COMMAND ioctl is used with certain parameters, including out len set to 0xd42, SCSI command set to ATA 16 PASS-THROUGH, ATA command set to ATA NOP, and protocol set to ATA PROT PIO. This can cause ata pio sector() to overwrite random memory. The issue seems to be related to a problem in either libata-sff or QEMU, where the status of an ATA NOP command is not set or is cleared before being read. A safety check has been added to ata pio sector() to prevent writing outside the allocated buffer.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Almalinux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu