PT-2026-37422 · Linux · Linux Kernel

Published 2026-05-06 · Updated 2026-06-05 · CVE-2026-43112

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An out-of-bounds read exists in the cifs sanitize prepath() function. This occurs when the function is called with an empty string or a string consisting solely of delimiters, such as "/". The logic attempts to access memory at *(cursor2 - 1) before the cursor2 variable has advanced, leading to a segmentation fault (SEGV).

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-43112

SUSE-SU-2026:22048-1

SUSE-SU-2026:22076-1

SUSE-SU-2026:22087-1

Affected Products

Linux Kernel

References · 108

• https://git.kernel.org/stable/c/49b1ce6d7cfb6c5a49f68bf5ccfcfb6ba14e63c3 · Patch
• https://ubuntu.com/security/CVE-2026-43112 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43112 · Vendor Advisory
• https://git.kernel.org/stable/c/86f9c23e0814cfdffda9eedf0c591c51ba209010 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2026:22076-1 · Vendor Advisory
• https://git.kernel.org/stable/c/2d29214448ec0f4e7e18bb1c14dd4a6c07f1c439 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-43112 · Security Note
• https://git.kernel.org/stable/c/78ec5bf2f589ec7fd8f169394bfeca541b077317 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43112 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:22048-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-43112 · Vendor Advisory
• https://git.kernel.org/stable/c/5d4fe469fe7dbff7d874c196bb680a82f2625d95 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2026:22087-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43112 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-43112 · Vendor Advisory