keys: make keyring key-chunk byte order agree with keyring_diff_objects()
In the Linux kernel, the following vulnerability has been resolved: keys: make keyring key-chunk byte order agree with keyring_diff_objects() keyring_get_key_chunk() loads description bytes into the index chunk low address first, while keyring_diff_objects() numbers the first differing bit from the low end and folds the absolute byte index into the level without removing the inline-prefix offset the level already carries. The two disagree on byte order and bit position, so the array can be told two keys first differ at a bit that does not differ in the chunk the walker uses, letting crafted descriptions collide into one node. Load the chunk in the order keyring_diff_objects() assumes and drop the inline-prefix length when folding the byte index into the level. This only changes the in-memory ordering used to place keys within a keyring; add, search and read of non-colliding keys are unaffected.
CVE-2026-74566
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: osv:CVE-2026-74566
Kernel
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 5.10.265
Source reference:
/affected/1/ranges5.15.216Source reference:
/affected/1/ranges6.1.183Source reference:
/affected/1/ranges6.6.151Source reference:
/affected/1/ranges6.12.103Source reference:
/affected/1/ranges6.18.44Source reference:
/affected/1/ranges7.1.8Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "f771fde82051976a6fc0fd570f8b86de4a92124b"
},
{
"fixed": "414bcf37d81ce9b3823aabc06b04c97fdcbe489b"
},
{
"fixed": "abe43c661efb753d5ee35ad8ace4bbb16fa9afd0"
},
{
"fixed": "f81920917074e3c4ad4fba06fe8c56738d010606"
},
{
"fixed": "bd0f976ef89dce6db458bf75bc2cf51127becc41"
},
{
"fixed": "7269df3e7fcfa308e6a456305162f7788747bdbd"
},
{
"fixed": "3d9f16c0b643ceac305526b2e2fe25c2c6166926"
},
{
"fixed": "7e5397a3fed0dee7779bd084bec3c0584db3c930"
},
{
"fixed": "58565eef0f8d861aae92abfb7658458d661cee17"
}
]
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74566.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.3.0"
},
{
"fixed": "5.10.265"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.11.0"
},
{
"fixed": "5.15.216"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.16.0"
},
{
"fixed": "6.1.183"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.2.0"
},
{
"fixed": "6.6.151"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.7.0"
},
{
"fixed": "6.12.103"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.13.0"
},
{
"fixed": "6.18.44"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.19.0"
},
{
"fixed": "7.1.8"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74566.json"
}
}
]- Related CVEs
- CVE-2026-74566
Source reference:
/id
Publisher severity
No explicit severity was provided.
- Event
- #50689 · Revision 1
- Added to Heist Feed
- Publisher date