High 7.8Published Jun 24, 2024

CVE-2024-39292um: Add winch to winch_handlers before registering winch IRQ

Updated under an hour ago (Oct 27, 2026, 7:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: um: Add winch to winch_handlers before registering winch IRQ Registering a winch IRQ is racy, an interrupt may occur before the winch is added to the winch_handlers list. If that happens, register_winch_irq() adds to that list a winch that is scheduled to be (or has already been) freed, causing a panic later in winch_cleanup(). Avoid the race by adding the winch to the winch_handlers list before registering the IRQ, and rolling back if um_request_irq() fails.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 before 66ea9a7c6824821476914bed21a476cd20094f33; from 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 before dc1ff95602ee908fcd7d8acee7a0dadb61b1a0c0; from 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 before 351d1a64544944b44732f6a64ed65573b00b9e14; from 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 before 31960d991e43c8d6dc07245f19fc13398e90ead2; 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 builds before 0c02d425a2fbe52643a5859a779db0329e7dddd4; from 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 before 434a06c38ee1217a8baa0dd7c37cc85d50138fb0; from 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 before 73b8e21f76c7dda4905655d2e2c17dc5a73b87f1; from 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 before a0fbbd36c156b9f7b2276871d499c9943dfe5101	CNA record
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V3.1	CISA ADP
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name)	all versions not affected	CISA ADP
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name)	before V3.1	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
linux linux_kernel linux:linux_kernel	before 2.6.23; from 4.19 before 4.19.316; from 5.4 before 5.4.278; from 5.10 before 5.10.219; from 5.15 before 5.15.161; from 6.1 before 6.1.93; from 6.6 before 6.6.33; from 6.9 before 6.9.4; and 1 more ranges	NVD

References

References

https://git.kernel.org/stable/c/66ea9a7c6824821476914bed21a476cd20094f33	mailing-list, patch
https://git.kernel.org/stable/c/dc1ff95602ee908fcd7d8acee7a0dadb61b1a0c0	mailing-list, patch
https://git.kernel.org/stable/c/351d1a64544944b44732f6a64ed65573b00b9e14	mailing-list, patch
https://git.kernel.org/stable/c/31960d991e43c8d6dc07245f19fc13398e90ead2	mailing-list, patch
https://git.kernel.org/stable/c/0c02d425a2fbe52643a5859a779db0329e7dddd4	mailing-list, patch
https://git.kernel.org/stable/c/434a06c38ee1217a8baa0dd7c37cc85d50138fb0	mailing-list, patch
https://git.kernel.org/stable/c/73b8e21f76c7dda4905655d2e2c17dc5a73b87f1	mailing-list, patch
https://git.kernel.org/stable/c/a0fbbd36c156b9f7b2276871d499c9943dfe5101	mailing-list, patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.