KEYS: encrypted: fix integer overflow of datablob_len
In the Linux kernel, the following vulnerability has been resolved: KEYS: encrypted: fix integer overflow of datablob_len encrypted_key_alloc() stores datablob_len in a u16. It is computed from multiple string and payload lengths. If the result exceeds U16_MAX, the assignment truncates the allocation size. KASAN reports a 32760-byte slab-out-of-bounds write when __ekey_init() copies the master key description into the undersized buffer. The total payload length stored in key->datalen is also a u16. Use check_add_overflow() to reject values that do not fit either destination, and use kzalloc_flex() for the flexible-array allocation.
CVE-2026-98222
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-2026-98222
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": "7e70cb4978507cf31d76b90e4cfb4c28cad87f0c",
"lessThan": "1e720f63dbafc093a8f5d519f05b67724993edd4",
"versionType": "git"
},
{
"status": "affected",
"version": "7e70cb4978507cf31d76b90e4cfb4c28cad87f0c",
"lessThan": "a1a98eca102b1cbbc37ff9eaa197ae4e6a3ea4b0",
"versionType": "git"
},
{
"status": "affected",
"version": "7e70cb4978507cf31d76b90e4cfb4c28cad87f0c",
"lessThan": "cca38f2102a4cd35eda8d48950df4817b4b24757",
"versionType": "git"
},
{
"status": "affected",
"version": "7e70cb4978507cf31d76b90e4cfb4c28cad87f0c",
"lessThan": "8697c431e297eb0d0ab13dda6bc172b48a34f05c",
"versionType": "git"
}
],
"programFiles": [
"security/keys/encrypted-keys/encrypted.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.38"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.38",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"security/keys/encrypted-keys/encrypted.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98222
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38302 · Revision 1
- Added to Heist Feed
- Publisher date