cxl/features: Clamp Get Feature output size to the remaining buffer
In the Linux kernel, the following vulnerability has been resolved: cxl/features: Clamp Get Feature output size to the remaining buffer cxl_get_feature() reads a feature in a loop but passes a fixed size_out as the output capacity every iteration. On the last partial iteration the buffer has less room left, so a device that returns more than asked can overflow feat_out. Use the per-iter size data_to_rd_size, which already tracks the remaining room, as the output capacity.
CVE-2026-93077
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-2026-93077
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": "5e5ac21f629de796ab5d598b59c5e468c6fe4f95",
"lessThan": "b8abbd5c2928fd839dab702244cc57b228ab43aa",
"versionType": "git"
},
{
"status": "affected",
"version": "5e5ac21f629de796ab5d598b59c5e468c6fe4f95",
"lessThan": "ca95b15a0760e7724e61addbdd61050be13b6406",
"versionType": "git"
},
{
"status": "affected",
"version": "5e5ac21f629de796ab5d598b59c5e468c6fe4f95",
"lessThan": "2aeb21fe557ef154f0cdf4f9745ebd8d5b31ca83",
"versionType": "git"
}
],
"programFiles": [
"drivers/cxl/core/features.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.52",
"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": [
"drivers/cxl/core/features.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93077
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37811 · Revision 1
- Added to Heist Feed
- Publisher date