High 7.8Published Dec 24, 2025

CVE-2025-68724crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id

Updated under an hour ago (Oct 28, 2026, 11:10 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id Use check_add_overflow() to guard against potential integer overflows when adding the binary blob lengths and the size of an asymmetric_key_id structure and return ERR_PTR(-EOVERFLOW) accordingly. This prevents a possible buffer overflow when copying data from potentially malicious X.509 certificate fields that can be arbitrarily large, such as ASN.1 INTEGER serial numbers, issuer names, etc.

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: Deferred
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 builds before 60a7be5ee74408147e439164ac067e418ca74bb4; from 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 before c13c6e9de91d7f1dd7df756b1fa5a1f968839d76; from 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 before dfc1613961828745165aec6552c3818fa14ab725; 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 builds before 5b8ac617c8dab5cad3c4dc8d84d0987808a0f99c; from 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 before c73be4f51eed98fa0c7c189db8f279e1c86bfbf7; 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 builds before 6af753ac5205115e6c310c8c4236c01b59a1c44f; from 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 before b7090a5c153105b9fd221a5a81459ee8cd5babd6; from 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 before df0845cf447ae1556c3440b8b155de0926cbaa56	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	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 V3.1.6	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 V3.1.6	CISA ADP

References

References

https://git.kernel.org/stable/c/60a7be5ee74408147e439164ac067e418ca74bb4
https://git.kernel.org/stable/c/c13c6e9de91d7f1dd7df756b1fa5a1f968839d76
https://git.kernel.org/stable/c/dfc1613961828745165aec6552c3818fa14ab725
https://git.kernel.org/stable/c/5b8ac617c8dab5cad3c4dc8d84d0987808a0f99c
https://git.kernel.org/stable/c/c73be4f51eed98fa0c7c189db8f279e1c86bfbf7
https://git.kernel.org/stable/c/6af753ac5205115e6c310c8c4236c01b59a1c44f
https://git.kernel.org/stable/c/b7090a5c153105b9fd221a5a81459ee8cd5babd6
https://git.kernel.org/stable/c/df0845cf447ae1556c3440b8b155de0926cbaa56
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-457936.html

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.