NFSv4.1: zero referring call lists before decoding
In the Linux kernel, the following vulnerability has been resolved: NFSv4.1: zero referring call lists before decoding decode_cb_sequence_args() allocates csa_rclists with kmalloc_objs(), so each referring_call_list starts uninitialized. decode_rc_list() assigns rcl_refcalls only when rcl_nrefcalls is nonzero. A valid list with zero referring calls therefore leaves the pointer uninitialized, and nfs4_callback_sequence() later passes stale slab contents to kfree(). Allocate csa_rclists with kzalloc_objs() so every rcl_refcalls member is NULL from the beginning, including valid empty referring call lists.
CVE-2026-90104
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-2026-90104
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": "4aece6a19cf7f474f15eb861ba74db4479884ce3",
"lessThan": "ed54460caf5b5aa65ec03c9a6032d831f39f19f5",
"versionType": "git"
},
{
"status": "affected",
"version": "4aece6a19cf7f474f15eb861ba74db4479884ce3",
"lessThan": "7510a5b9edec9d9536a4e69f10edfb2592e6cf7f",
"versionType": "git"
},
{
"status": "affected",
"version": "4aece6a19cf7f474f15eb861ba74db4479884ce3",
"lessThan": "f4d23937e1c41995c2f54af26c89b5e48a41c299",
"versionType": "git"
},
{
"status": "affected",
"version": "4aece6a19cf7f474f15eb861ba74db4479884ce3",
"lessThan": "f31f3c042e024aef437cda42f0424ae8d4594b6c",
"versionType": "git"
},
{
"status": "affected",
"version": "4aece6a19cf7f474f15eb861ba74db4479884ce3",
"lessThan": "8fa4804fe62ca4155a2d8fc2789d630376cbf2fc",
"versionType": "git"
}
],
"programFiles": [
"fs/nfs/callback_xdr.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.31"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.31",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/nfs/callback_xdr.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90104
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #48602 · Revision 1
- Added to Heist Feed
- Publisher date