Race condition in Linux kernel - CVE-2026-98697

Vulnerability identifier: #VU157037

CSH Severity: Low

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

CVE-ID: CVE-2026-98697

CWE-ID: CWE-362

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local privileged user to leak kernel memory, potentially causing a denial of service through resource exhaustion.

The vulnerability exists due to a race condition in the Linux kernel USB serial subsystem when driver deregistration overlaps with writes to the new_id attribute. A local privileged user can write to the attribute during deregistration to add a dynamic ID that escapes cleanup, leaking its allocated memory.

Linux kernel
SUSE Linux Micro
SUSE Linux Micro Extras
kernel-default
kernel-64kb
kernel-64kb-debugsource
kernel-64kb-devel
kernel-default-devel
kernel-syms
kernel-obs-build
kernel-obs-build-debugsource
kernel-default-debugsource
kernel-default-devel-debuginfo

Install security update from vendor's repository.

kernel-default - update to 6.4.0-159998.55.1
kernel-64kb - update to 6.4.0-159998.55.1
kernel-64kb-debugsource - update to 6.4.0-159998.55.1
kernel-64kb-devel - update to 6.4.0-159998.55.1
kernel-default-devel - update to 6.4.0-159998.55.1
kernel-syms - update to 6.4.0-159998.55.1
kernel-obs-build - update to 6.4.0-159998.55.1
kernel-obs-build-debugsource - update to 6.4.0-159998.55.1
kernel-default-debugsource - update to 6.4.0-159998.55.1
kernel-default-devel-debuginfo - update to 6.4.0-159998.55.1

• https://git.kernel.org/stable/c/29172161236154f362e35694864cacbdeb07d060
• https://git.kernel.org/stable/c/380f57cd58e26e0f3687451196ec446c473c52d9
• https://git.kernel.org/stable/c/4d6da6867b4ac6468d634a0dd3c35dfc0dc8af81
• https://git.kernel.org/stable/c/63594e8ffe097bc0b7639936f33799a7653dded2
• https://git.kernel.org/stable/c/ebd8fcaaacb66c15ae7e19d14619abe3762e0701

• Race condition in Linux kernel usb serial driver
• SUSE update for the Linux Kernel