KEYS: fix overflow in keyctl_pkey_params_get_2()
In the Linux kernel, the following vulnerability has been resolved: KEYS: fix overflow in keyctl_pkey_params_get_2() The length for the internal output buffer is calculated incorrectly, which can result overflow when a too small buffer is provided. Fix the bug by allocating internal output with the size of the maximum length of the cryptographic primitive instead of caller provided size.
CVE-2026-63824
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-63824
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "00d60fd3b93219ea854220f0fd264b86398cbc53",
"lessThan": "622ec2dcd59f21623f2a7ab773c80ceb7d555e3a",
"versionType": "git"
},
{
"status": "affected",
"version": "00d60fd3b93219ea854220f0fd264b86398cbc53",
"lessThan": "b1e247338bc71826a2d2def3e0874c34749df69a",
"versionType": "git"
},
{
"status": "affected",
"version": "00d60fd3b93219ea854220f0fd264b86398cbc53",
"lessThan": "0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3",
"versionType": "git"
},
{
"status": "affected",
"version": "00d60fd3b93219ea854220f0fd264b86398cbc53",
"lessThan": "5966e4e2ba213ab7ad559166152eb4f1f170dd2c",
"versionType": "git"
},
{
"status": "affected",
"version": "00d60fd3b93219ea854220f0fd264b86398cbc53",
"lessThan": "5165f1cc727f1322456735df212d8e26ec237a8d",
"versionType": "git"
},
{
"status": "affected",
"version": "00d60fd3b93219ea854220f0fd264b86398cbc53",
"lessThan": "b11c1fa32667692a2c0566e10163758e786e430c",
"versionType": "git"
},
{
"status": "affected",
"version": "00d60fd3b93219ea854220f0fd264b86398cbc53",
"lessThan": "670fc6a311ed321522b7fff92cf0fc376b4f6e78",
"versionType": "git"
},
{
"status": "affected",
"version": "00d60fd3b93219ea854220f0fd264b86398cbc53",
"lessThan": "cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0b",
"versionType": "git"
}
],
"programFiles": [
"security/keys/keyctl_pkey.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.20"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.20",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.260",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.211",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.177",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.144",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.95",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.38",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.3",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"security/keys/keyctl_pkey.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-63824
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40839 · Revision 1
- Added to Heist Feed
- Publisher date