PT-2026-44290 · Linux+2 · Linux Kernel+2
CVE-2026-46167
·
Published
2026-04-27
·
Updated
2026-09-07
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 versions prior to 7.0.11-1.1
Description
A heap leak exists in the
usblp driver. The usblp read status() function requests 1 byte of data, but if a malicious printer responds with zero bytes, the usblp ctrl msg() function discards the actual number of bytes transferred. This results in the statusbuf variable containing one byte of stale kmalloc heap memory, which is then sign-extended into a local integer and passed to the ioctl caller via copy to user() during an LPGETSTATUS ioctl call.Recommendations
Update to version 7.0.11-1.1 or later.
Exploit
Fix
Access of Uninitialized Pointer
Use of Uninitialized Resource
Access of Memory Location After End of Buffer
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu