CVE-2025-38404 | usb: typec: displayport: Fix potential deadlock

In the Linux kernel, the following vulnerability has been resolved: usb: typec: displayport: Fix potential deadlock The deadlock can occur due to a recursive lock acquisition of `cros_typec_altmode_data::mutex`. The call chain is as follows: 1. cros_typec_altmode_work() acquires the mutex 2. typec_altmode_vdm() -> dp_altmode_vdm() -> 3. typec_altmode_exit() -> cros_typec_altmode_exit() 4. cros_typec_altmode_exit() attempts to acquire the mutex again To prevent this, defer the `typec_altmode_exit()` call by scheduling it rather than calling it directly from within the mutex-protected context.

Published: 2025-07-25 Last update: 2025-12-23 Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-38404 is rated Low Risk (27.6/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-38404

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-21 0.04% 0.05% +0.01%
2 2025-12-21 0.06% 0.04% -0.02%
3 2025-11-24 — 0.06% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-38404

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]

Weakness enumeration for CVE-2025-38404

OS Trackers for CVE-2025-38404

vendor priority summary link
debian not yet assigned CVE-2025-38404 not yet assigned priority: Debian including 2 source packages (linux, linux-6.1), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6. https://security-tracker.debian.org/tracker/CVE-2025-38404
redhat — — https://access.redhat.com/security/cve/CVE-2025-38404
suse medium CVE-2025-38404 severity moderate: SUSE including 476 source package names (2.1.3-6.67:kernel-default-base-6.4.0-32.1.21.10, 2.1.3-7.44:kernel-default-6.4.0-32.1, …), 1108 product×package rows across 216 product lines (Container suse/sl-micro/6.0/base-os-container, Container suse/sl-micro/6.0/kvm-os-container, … (216 product lines)): Fixed 627, Known Affected 231, Known Not Affected 229, First Fixed 21. https://www.suse.com/security/cve/CVE-2025-38404/
ubuntu medium CVE-2025-38404 medium priority: Ubuntu including 144 source packages (linux, linux-allwinner-5.19, …), 1152 status rows across 8 suites (bionic, focal, jammy, noble, plucky, trusty, upstream, xenial): DNE 797, ignored 151, not-affected 126, released 78. https://ubuntu.com/security/CVE-2025-38404

Affected software / configurations for CVE-2025-38404

Vendor Product Version Raw CPE
linux linux_kernel 6.1.143 cpe:2.3:o:linux:linux_kernel:6.1.143:*:*:*:*:*:*:*
linux linux_kernel 6.6.96 cpe:2.3:o:linux:linux_kernel:6.6.96:*:*:*:*:*:*:*
linux linux_kernel 6.12.36 cpe:2.3:o:linux:linux_kernel:6.12.36:*:*:*:*:*:*:*
linux linux_kernel 6.15.5 cpe:2.3:o:linux:linux_kernel:6.15.5:*:*:*:*:*:*:*
linux linux_kernel 6.16 cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*
linux linux_kernel 6.16 cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*
linux linux_kernel 6.16 cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*
linux linux_kernel 6.16 cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References for CVE-2025-38404

URL Tags
https://git.kernel.org/stable/c/099cf1fbb8afc3771f408109f62bdec66f85160e Patch
https://git.kernel.org/stable/c/63cff9f57e86b2dc25d7487ca0118df89a665296 Patch
https://git.kernel.org/stable/c/749d9076735fb497aae60fbea9fff563f9ea3254 Patch
https://git.kernel.org/stable/c/76cf1f33e7319fe74c94ac92f9814094ee8cc84b Patch
https://git.kernel.org/stable/c/7be0d1ea71f52595499da39cea484a895e8ed042 Patch
https://git.kernel.org/stable/c/80c25d7916a44715338d4f8924c8e52af50d0b9f Patch
https://git.kernel.org/stable/c/c782f98eef14197affa8a7b91e6981420f109ea9 Patch
https://git.kernel.org/stable/c/eb08fca56f1f39e4038cb9bac9864464b13b00aa Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory
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