{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63824", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.014Z", "datePublished": "2026-07-19T12:02:20.406Z", "dateUpdated": "2026-07-19T12:02:20.406Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-19T12:02:20.406Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: fix overflow in keyctl_pkey_params_get_2()\n\nThe length for the internal output buffer is calculated incorrectly, which\ncan result overflow when a too small buffer is provided.\n\nFix the bug by allocating internal output with the size of the maximum\nlength of the cryptographic primitive instead of caller provided size."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["security/keys/keyctl_pkey.c"], "versions": [{"version": "00d60fd3b93219ea854220f0fd264b86398cbc53", "lessThan": "622ec2dcd59f21623f2a7ab773c80ceb7d555e3a", "status": "affected", "versionType": "git"}, {"version": "00d60fd3b93219ea854220f0fd264b86398cbc53", "lessThan": "b1e247338bc71826a2d2def3e0874c34749df69a", "status": "affected", "versionType": "git"}, {"version": "00d60fd3b93219ea854220f0fd264b86398cbc53", "lessThan": "0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3", "status": "affected", "versionType": "git"}, {"version": "00d60fd3b93219ea854220f0fd264b86398cbc53", "lessThan": "5966e4e2ba213ab7ad559166152eb4f1f170dd2c", "status": "affected", "versionType": "git"}, {"version": "00d60fd3b93219ea854220f0fd264b86398cbc53", "lessThan": "5165f1cc727f1322456735df212d8e26ec237a8d", "status": "affected", "versionType": "git"}, {"version": "00d60fd3b93219ea854220f0fd264b86398cbc53", "lessThan": "b11c1fa32667692a2c0566e10163758e786e430c", "status": "affected", "versionType": "git"}, {"version": "00d60fd3b93219ea854220f0fd264b86398cbc53", "lessThan": "670fc6a311ed321522b7fff92cf0fc376b4f6e78", "status": "affected", "versionType": "git"}, {"version": "00d60fd3b93219ea854220f0fd264b86398cbc53", "lessThan": "cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0b", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["security/keys/keyctl_pkey.c"], "versions": [{"version": "4.20", "status": "affected"}, {"version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.260", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.211", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.177", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.144", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.95", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.38", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.3", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.10.260"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.15.211"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.1.177"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.6.144"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.12.95"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.18.38"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "7.1.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/622ec2dcd59f21623f2a7ab773c80ceb7d555e3a"}, {"url": "https://git.kernel.org/stable/c/b1e247338bc71826a2d2def3e0874c34749df69a"}, {"url": "https://git.kernel.org/stable/c/0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3"}, {"url": "https://git.kernel.org/stable/c/5966e4e2ba213ab7ad559166152eb4f1f170dd2c"}, {"url": "https://git.kernel.org/stable/c/5165f1cc727f1322456735df212d8e26ec237a8d"}, {"url": "https://git.kernel.org/stable/c/b11c1fa32667692a2c0566e10163758e786e430c"}, {"url": "https://git.kernel.org/stable/c/670fc6a311ed321522b7fff92cf0fc376b4f6e78"}, {"url": "https://git.kernel.org/stable/c/cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0b"}], "title": "KEYS: fix overflow in keyctl_pkey_params_get_2()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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