High
smb/client: zero-initialize stack-allocated cifs_open_info_data
In the Linux kernel, the following vulnerability has been resolved: smb/client: zero-initialize stack-allocated cifs_open_info_data Stack-allocated cifs_open_info_data may contain random data. This can make some fields have wrong value if they are not set later.
Announced Source revision 1
Original source ↗CVE-2026-93801
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-2026-93801
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": "436cfdbc57d98808fce427d9a8d97691374989b3",
"lessThan": "2c5db82778f560121efda9e052e2f19c2d807c1b",
"versionType": "git"
},
{
"status": "affected",
"version": "fc2f2011d3d84b56f536b4a25a4bb2fa1b13d520",
"lessThan": "74ff47e6c4213fcfeba2de448d9cbda200507d22",
"versionType": "git"
},
{
"status": "affected",
"version": "057ac50638bcece64b3b436d3a61b70ed6c01a34",
"lessThan": "22532dd88694ed20bdd47523ffa709f166ce776b",
"versionType": "git"
},
{
"status": "affected",
"version": "057ac50638bcece64b3b436d3a61b70ed6c01a34",
"lessThan": "8fce4cf4369c766a3293a05419500cbfde72e60d",
"versionType": "git"
},
{
"status": "affected",
"version": "83d3bc866530a36a465b47cce4d2a9def2411960",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.113",
"lessThan": "6.6.160",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.12.54",
"lessThan": "6.12.111",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.17.4",
"lessThan": "6.18",
"versionType": "semver"
}
],
"programFiles": [
"fs/smb/client/link.c",
"fs/smb/client/smb1ops.c",
"fs/smb/client/smb2ops.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/client/link.c",
"fs/smb/client/smb1ops.c",
"fs/smb/client/smb2ops.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93801
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #48750 · Revision 1
- Added to Heist Feed
- Publisher date