CVE-2025-40249

highpriority · track · 0EPSS 0.001 · 4 %ileDEEURU

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.14% (4th) EPSS

CVSS 7 · high

Is it mine?

23 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

In the Linux kernel, the following vulnerability has been resolved: gpio: cdev: make sure the cdev fd is still active before emitting events With the final call to fput() on a file descriptor, the release action may be deferred and scheduled on a work queue. The reference count of that descriptor is still zero and it must not be used. It's possible that a GPIO change, we want to notify the user-space about, happens AFTER the reference count on the file descriptor associated with the character device went down to zero but BEFORE the .release() callback was called from the workqueue and so BEFORE we unregistered from the notifier. Using the regular get_file() routine in this situation triggers the following warning: struct file::f_count incremented from zero; use-after-free condition present! So use the get_file_active() variant that will return NULL on file descriptors that have been or are being released.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedkernel-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-abi-stablelists-0:6.12.0-124.43.1.el10_1.noarch as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-core-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-cross-headers-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-core-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-devel-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-devel-matched-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-modules-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-modules-core-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-modules-extra-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-uki-virt-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-devel-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-devel-matched-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-doc-0:6.12.0-124.43.1.el10_1.noarch as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-headers-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-modules-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-modules-core-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-modules-extra-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-modules-extra-matched-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-rt-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-rt-core-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-rt-debug-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-rt-debug-core-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-rt-debug-devel-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-rt-debug-modules-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-rt-debug-modules-core-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-rt-debug-modules-extra-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-rt-devel-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-rt-modules-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-rt-modules-core-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-rt-modules-extra-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-tools-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-tools-libs-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-tools-libs-devel-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-uki-virt-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-uki-virt-addons-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedlibperf-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedperf-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpython3-perf-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedrtla-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedrv-0:6.12.0-124.43.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.5–7.8

v3.17highAV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 1.8 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · SUSE Product Security

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-910USCWE-911US

affected products (23)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Dell Avamarall versionscert_bundDEcpe:/a:dell:avamar:-
Dell NetWorkerall versionscert_bundDEcpe:/a:dell:networker:-
Google Cloud Platformall versionscert_bundDEcpe:/a:google:cloud_platform:-
IBM DataPower Gatewayall versionscert_bundDEcpe:/a:ibm:datapower_gateway:-
Microsoft Azure Linux azl3all versionscert_bundDEcpe:/o:microsoft:azure_linux:azl3
Open Source Linux Kernelall versionscert_bundDEcpe:/o:linux:linux_kernel:unspecified
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Siemens SIMATIC S7 1500 CPUall versionscert_bundDEcpe:/h:siemens:simatic_s7:1500_cpu
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Linux Linux≤ 6.13enisa_euvdEU
Linux Linuxall versionsenisa_euvdEU
Linux Linux< 6.17.10enisa_euvdEU
Linux Linux< 6.18enisa_euvdEU
Linux Linux40b7c49950bd… → d4cd0902c156…enisa_euvdEU

showing 20 of 23

advisories (2)

Vendor and ecosystem advisories describing this.

RHSA-2026:4012security update for kernel2026-03-09csaf · suse_csafDE
security update for kernel
WID-SEC-W-2025-2747Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of ServiceDeutsch2025-12-04csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen oder weitere, nicht spezifizierte Auswirkungen zu erlangen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund suse_csaf NVD CVE.org MITRE

published 2025-12-04modified 2026-10-19

references (7)

External citations — patches, advisories, analysis.

scry

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