Is CVE-2025-40260 in the CISA KEV catalog?

No. CVE-2025-40260 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2025-40260?

CVE-2025-40260 has an EPSS score of 0.15% (5th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-40260?

Upgrade linux on debian unstable to 6.17.10-1 or later. Fixes are available for 61 affected products.

CVE & CISA-KEV Catalog

CVE-2025-40260

UNSCORED

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: sched_ext: Fix scx_enable() crash on helper kthread creation failure A crash was observed when the sched_ext selftests runner was terminated with Ctrl+\ while test 15 was running: NIP [c00000000028fa58] scx_enable.constprop.0+0x358/0x12b0 LR [c00000000028fa2c] scx_enable.constprop.0+0x32c/0x12b0 Call Trace: scx_enable.constprop.0+0x32c/0x12b0 (unreliable) bpf_struct_ops_link_create+0x18c/0x22c __sys_bpf+0x23f8/0x3044 sys_bpf+0x2c/0x6c system_call_exception+0x124/0x320 system_call_vectored_common+0x15c/0x2ec kthread_run_worker() returns an ERR_PTR() on failure rather than NULL, but the current code in scx_alloc_and_add_sched() only checks for a NULL helper. Incase of failure on SIGQUIT, the error is not handled in scx_alloc_and_add_sched() and scx_enable() ends up dereferencing an error pointer. Error handling is fixed in scx_alloc_and_add_sched() to propagate PTR_ERR() into ret, so that scx_enable() jumps to the existing error path, avoiding random dereference on failure.

How to fix

Remediation Available

linuxDebian

Fixed in:6.17.10-1CVE-2025-40260

linuxUbuntu

Fixed in:6.17.0-19.19USN-8094-1

linux-awsUbuntu

Fixed in:6.17.0-1009.9USN-8094-1

linux-aws-6.17Ubuntu

Fixed in:6.17.0-1009.9~24.04.2USN-8094-1

linux-azureUbuntu

Fixed in:6.17.0-1010.10USN-8094-4

linux-azure-6.17Ubuntu

Fixed in:6.17.0-1010.10~24.04.1USN-8094-4

linux-gcpUbuntu

Fixed in:6.17.0-1009.9USN-8094-1

linux-gcp-6.17Ubuntu

Fixed in:6.17.0-1009.9~24.04.3USN-8094-2

linux-hwe-6.17Ubuntu

Fixed in:6.17.0-19.19~24.04.2USN-8094-1

linux-image-6.17.0-1008-realtimeUbuntu

Fixed in:6.17.0-1008.9~24.04.1USN-8094-3

Fixed in:6.17.0-1008.9USN-8094-2

linux-image-6.17.0-1009-awsUbuntu

Fixed in:6.17.0-1009.9~24.04.2USN-8094-1

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-6.17.0-1009-aws-64kUbuntu

Fixed in:6.17.0-1009.9~24.04.2USN-8094-1

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-6.17.0-1009-gcpUbuntu

Fixed in:6.17.0-1009.9~24.04.3USN-8094-2

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-6.17.0-1009-gcp-64kUbuntu

Fixed in:6.17.0-1009.9~24.04.3USN-8094-2

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-6.17.0-1009-oracleUbuntu

Fixed in:6.17.0-1009.9~24.04.1USN-8094-1

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-6.17.0-1009-oracle-64kUbuntu

Fixed in:6.17.0-1009.9~24.04.1USN-8094-1

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-6.17.0-1010-azureUbuntu

Fixed in:6.17.0-1010.10~24.04.1USN-8094-4

Fixed in:6.17.0-1010.10USN-8094-4

linux-image-6.17.0-1010-raspiUbuntu

Fixed in:6.17.0-1010.10USN-8094-5

linux-image-6.17.0-1017-oemUbuntu

Fixed in:6.17.0-1017.17USN-8152-1

linux-image-6.17.0-19-genericUbuntu

Fixed in:6.17.0-19.19~24.04.2USN-8094-1

Fixed in:6.17.0-19.19USN-8094-1

linux-image-6.17.0-19-generic-64kUbuntu

Fixed in:6.17.0-19.19~24.04.2USN-8094-1

Fixed in:6.17.0-19.19USN-8094-1

linux-image-awsUbuntu

Fixed in:6.17.0-1009.9~24.04.2USN-8094-1

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-aws-6.17Ubuntu

Fixed in:6.17.0-1009.9~24.04.2USN-8094-1

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-aws-64kUbuntu

Fixed in:6.17.0-1009.9~24.04.2USN-8094-1

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-aws-64k-6.17Ubuntu

Fixed in:6.17.0-1009.9~24.04.2USN-8094-1

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-azureUbuntu

Fixed in:6.17.0-1010.10~24.04.1USN-8094-4

Fixed in:6.17.0-1010.10USN-8094-4

linux-image-azure-6.17Ubuntu

Fixed in:6.17.0-1010.10~24.04.1USN-8094-4

Fixed in:6.17.0-1010.10USN-8094-4

linux-image-gcpUbuntu

Fixed in:6.17.0-1009.9~24.04.3USN-8094-2

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-gcp-6.17Ubuntu

Fixed in:6.17.0-1009.9~24.04.3USN-8094-2

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-gcp-64kUbuntu

Fixed in:6.17.0-1009.9~24.04.3USN-8094-2

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-gcp-64k-6.17Ubuntu

Fixed in:6.17.0-1009.9~24.04.3USN-8094-2

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-genericUbuntu

Fixed in:6.17.0-19.19USN-8094-1

linux-image-generic-6.17Ubuntu

Fixed in:6.17.0-19.19~24.04.2USN-8094-1

Fixed in:6.17.0-19.19USN-8094-1

linux-image-generic-64kUbuntu

Fixed in:6.17.0-19.19USN-8094-1

linux-image-generic-64k-6.17Ubuntu

Fixed in:6.17.0-19.19~24.04.2USN-8094-1

Fixed in:6.17.0-19.19USN-8094-1

linux-image-generic-64k-hwe-24.04Ubuntu

Fixed in:6.17.0-19.19~24.04.2USN-8094-1

linux-image-generic-hwe-24.04Ubuntu

Fixed in:6.17.0-19.19~24.04.2USN-8094-1

linux-image-oem-24.04Ubuntu

Fixed in:6.17.0-1017.17USN-8152-1

linux-image-oem-24.04aUbuntu

Fixed in:6.17.0-1017.17USN-8152-1

linux-image-oem-24.04bUbuntu

Fixed in:6.17.0-1017.17USN-8152-1

linux-image-oem-24.04cUbuntu

Fixed in:6.17.0-1017.17USN-8152-1

linux-image-oem-24.04dUbuntu

Fixed in:6.17.0-1017.17USN-8152-1

linux-image-oem-6.17Ubuntu

Fixed in:6.17.0-1017.17USN-8152-1

linux-image-oracleUbuntu

Fixed in:6.17.0-1009.9~24.04.1USN-8094-1

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-oracle-6.17Ubuntu

Fixed in:6.17.0-1009.9~24.04.1USN-8094-1

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-oracle-64kUbuntu

Fixed in:6.17.0-1009.9~24.04.1USN-8094-1

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-oracle-64k-6.17Ubuntu

Fixed in:6.17.0-1009.9~24.04.1USN-8094-1

Fixed in:6.17.0-1009.9USN-8094-1

linux-image-raspiUbuntu

Fixed in:6.17.0-1010.10USN-8094-5

linux-image-raspi-6.17Ubuntu

Fixed in:6.17.0-1010.10USN-8094-5

linux-image-realtimeUbuntu

Fixed in:6.17.0-1008.9USN-8094-2

linux-image-realtime-6.17Ubuntu

Fixed in:6.17.0-1008.9~24.04.1USN-8094-3

Fixed in:6.17.0-1008.9USN-8094-2

linux-image-realtime-hwe-24.04Ubuntu

Fixed in:6.17.0-1008.9~24.04.1USN-8094-3

Fixed in:6.17.0-1008.9USN-8094-2

linux-image-virtualUbuntu

Fixed in:6.17.0-19.19USN-8094-1

linux-image-virtual-6.17Ubuntu

Fixed in:6.17.0-19.19~24.04.2USN-8094-1

Fixed in:6.17.0-19.19USN-8094-1

linux-image-virtual-hwe-24.04Ubuntu

Fixed in:6.17.0-19.19~24.04.2USN-8094-1

linux-oem-6.17Ubuntu

Fixed in:6.17.0-1017.17USN-8152-1

linux-oracleUbuntu

Fixed in:6.17.0-1009.9USN-8094-1

linux-oracle-6.17Ubuntu

Fixed in:6.17.0-1009.9~24.04.1USN-8094-1

linux-raspiUbuntu

Fixed in:6.17.0-1010.10USN-8094-5

linux-realtimeUbuntu

Fixed in:6.17.0-1008.9USN-8094-2

linux-realtime-6.17Ubuntu

Fixed in:6.17.0-1008.9~24.04.1USN-8094-3

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.15%probability of exploitation in 30 days

5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Other references2

Embed a live status badge for CVE-2025-40260

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-04.