Stack-based buffer overflow in Linux kernel - CVE-2026-93190

Vulnerability identifier: #VU150802

CSH Severity: Low

CVSS v4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-93190

CWE-ID: CWE-121

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local privileged user to cause memory corruption.

The vulnerability exists due to a stack-based buffer overflow in cros_typec_register_partner_pdos() when processing EC TYPEC_STATUS responses with a source or sink PDO count exceeding PDO_MAX_OBJECTS. A local privileged user can provide a response with an oversized PDO count to cause memory corruption.

Linux kernel
Debian Linux
SUSE Linux Micro Extras
SUSE Linux Micro
Ubuntu
linux (Ubuntu package)
linux-oracle (Ubuntu package)
linux-gcp (Ubuntu package)
linux-aws (Ubuntu package)
linux-ibm (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
kernel-64kb
kernel-default-devel-debuginfo
kernel-default-debugsource
kernel-obs-build-debugsource
kernel-obs-build
kernel-syms
kernel-default-devel
kernel-64kb-devel
kernel-64kb-debugsource
kernel-default
linux (Debian package)

Install security update from vendor's repository.

linux (Ubuntu package) - update to 7.0.0-42.42
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-ibm (Ubuntu package) - update to 7.0.0-1017.17
linux-hwe-7.0 (Ubuntu package) - update to 7.0.0-42.42~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1017.17
kernel-64kb - update to 6.4.0-159998.55.1
kernel-default-devel-debuginfo - update to 6.4.0-159998.55.1
kernel-default-debugsource - update to 6.4.0-159998.55.1
kernel-obs-build-debugsource - update to 6.4.0-159998.55.1
kernel-obs-build - update to 6.4.0-159998.55.1
kernel-syms - update to 6.4.0-159998.55.1
kernel-default-devel - update to 6.4.0-159998.55.1
kernel-64kb-devel - update to 6.4.0-159998.55.1
kernel-64kb-debugsource - update to 6.4.0-159998.55.1
kernel-default - update to 6.4.0-159998.55.1
linux (Debian package) - update to 6.12.111-1

• https://git.kernel.org/stable/c/2a7a4e45a3aa4f4ef7013eb64649f6184b76a293
• https://git.kernel.org/stable/c/4e37371cb4e3b8ff564d7760029236a7bd614562
• https://git.kernel.org/stable/c/54d6b0ee9b8ba434089b11843effc111dc2e6ead
• https://git.kernel.org/stable/c/7617b210a2200b76d8f171819390468c7d189c80
• https://git.kernel.org/stable/c/a0a8cd9fc9c48b95095bcec4b146f7a99486f58e
• https://git.kernel.org/stable/c/e4728288473a5024a8bdba7d43f346719606fea0

• Stack-based buffer overflow in Linux kernel platform chrome driver
• Debian update for linux
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more
• SUSE update for the Linux Kernel