{"id":"CVE-2025-68724","title":"crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id\n\nUse check_add_overflow() to guard against potential integer overflows\nwhen adding the binary b…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < 60a7be5ee74408147e439164ac067e418ca74bb4","Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < c13c6e9de91d7f1dd7df756b1fa5a1f968839d76","Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < dfc1613961828745165aec6552c3818fa14ab725","Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < 5b8ac617c8dab5cad3c4dc8d84d0987808a0f99c","Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < c73be4f51eed98fa0c7c189db8f279e1c86bfbf7","Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < 6af753ac5205115e6c310c8c4236c01b59a1c44f","Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < b7090a5c153105b9fd221a5a81459ee8cd5babd6","Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < df0845cf447ae1556c3440b8b155de0926cbaa56","Linux 3.18"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-06-16T19:22:49.497362Z"},"published":"2025-12-24","updated":"2026-09-08","sourceUpdated":"2026-09-08T08:43:18.690Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-68724","references":[{"url":"https://git.kernel.org/stable/c/60a7be5ee74408147e439164ac067e418ca74bb4"},{"url":"https://git.kernel.org/stable/c/c13c6e9de91d7f1dd7df756b1fa5a1f968839d76"},{"url":"https://git.kernel.org/stable/c/dfc1613961828745165aec6552c3818fa14ab725"},{"url":"https://git.kernel.org/stable/c/5b8ac617c8dab5cad3c4dc8d84d0987808a0f99c"},{"url":"https://git.kernel.org/stable/c/c73be4f51eed98fa0c7c189db8f279e1c86bfbf7"},{"url":"https://git.kernel.org/stable/c/6af753ac5205115e6c310c8c4236c01b59a1c44f"},{"url":"https://git.kernel.org/stable/c/b7090a5c153105b9fd221a5a81459ee8cd5babd6"},{"url":"https://git.kernel.org/stable/c/df0845cf447ae1556c3440b8b155de0926cbaa56"}],"tags":["cve.org"],"epss":0.00138,"epssPercentile":0.02581,"ingestedAt":"2026-09-08T15:33:26.995Z","slug":"CVE-2025-68724","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id\n\nUse check_add_overflow() to guard against potential integer overflows\nwhen adding the binary blob lengths and the size of an asymmetric_key_id\nstructure and return ERR_PTR(-EOVERFLOW) accordingly. This prevents a\npossible buffer overflow when copying data from potentially malicious\nX.509 certificate fields that can be arbitrarily large, such as ASN.1\nINTEGER serial numbers, issuer names, etc.\n\n## Affected\n\n- `Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < 60a7be5ee74408147e439164ac067e418ca74bb4`\n- `Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < c13c6e9de91d7f1dd7df756b1fa5a1f968839d76`\n- `Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < dfc1613961828745165aec6552c3818fa14ab725`\n- `Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < 5b8ac617c8dab5cad3c4dc8d84d0987808a0f99c`\n- `Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < c73be4f51eed98fa0c7c189db8f279e1c86bfbf7`\n- `Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < 6af753ac5205115e6c310c8c4236c01b59a1c44f`\n- `Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < b7090a5c153105b9fd221a5a81459ee8cd5babd6`\n- `Linux >= 7901c1a8effbe5f89673bfc09d6e37b8f334f1a7 < df0845cf447ae1556c3440b8b155de0926cbaa56`\n- `Linux 3.18`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}