CVE-2025-40164 — Improper Synchronization in Linux

CWE-662 — Improper Synchronization25 documents7 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 99.80%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
21
LinuxLinux KernelDebian Linux+18 more
Timeline
PublishedNov 12
Latest updateApr 17

Description

In the Linux kernel, the following vulnerability has been resolved: usbnet: Fix using smp_processor_id() in preemptible code warnings Syzbot reported the following warning: BUG: using smp_processor_id() in preemptible [00000000] code: dhcpcd/2879 caller is usbnet_skb_return+0x74/0x490 drivers/net/usb/usbnet.c:331 CPU: 1 UID: 0 PID: 2879 Comm: dhcpcd Not tainted 6.15.0-rc4-syzkaller-00098-g615dca38c2ea #0 PREEMPT(voluntary) Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages23 packages

▶NVDlinux/linux_kernel4.7.1 — 5.15.199+6
▶Debianlinux/linux_kernel< 6.1.162-1+2
▶Ubuntulinux/linux_kernel< 6.17.0-14.14

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

7
OSV
linux-azure vulnerabilities↗2026-02-24
▶
OSV
linux-oem-6.17 vulnerabilities↗2026-02-17
▶
OSV
linux-aws, linux-oracle vulnerabilities↗2026-02-17
▶
OSV
linux-gcp vulnerabilities↗2026-02-12
▶
OSV
linux, linux-raspi, linux-realtime vulnerabilities↗2026-02-12
▶

📋Vendor Advisories

17
Ubuntu
Linux kernel (HWE) vulnerabilities↗2026-04-17
▶
Ubuntu
Linux kernel (NVIDIA) vulnerabilities↗2026-04-17
▶
Ubuntu
Linux kernel (FIPS) vulnerabilities↗2026-04-17
▶
Ubuntu
Linux kernel (Real-time) vulnerabilities↗2026-04-17
▶
Ubuntu
Linux kernel (FIPS) vulnerabilities↗2026-04-17
▶
CVE-2025-40164 — Improper Synchronization in Linux | cvebase