smb: client: harden DFS cache against invalid target hints
In the Linux kernel, the following vulnerability has been resolved: smb: client: harden DFS cache against invalid target hints Currently, get_tgt_name() returns ERR_PTR(-ENOENT) when ce->tgthint is NULL, and dfs_cache_noreq_update_tgthint() assumes ce->tgthint is always valid. In preparation for clearing ce->tgthint in free_tgts(), harden callers of get_tgt_name() against ERR_PTR results and harden dfs_cache_noreq_update_tgthint() against NULL pointer dereferences.
CVE-2026-93210
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-2026-93210
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": "54be1f6c1c37498bba557049df646cc239fa37e3",
"lessThan": "a48328afbc3f63e3b9de8827e2e16c15b17976f7",
"versionType": "git"
},
{
"status": "affected",
"version": "54be1f6c1c37498bba557049df646cc239fa37e3",
"lessThan": "6cb7f9fed8f40f28fbd464ca99c946951afc0952",
"versionType": "git"
},
{
"status": "affected",
"version": "54be1f6c1c37498bba557049df646cc239fa37e3",
"lessThan": "66dbcdbb0cadffd12eb8f2b115fd57d384c5109d",
"versionType": "git"
},
{
"status": "affected",
"version": "54be1f6c1c37498bba557049df646cc239fa37e3",
"lessThan": "846f0709559b9e27024e126a80bc7afb76516912",
"versionType": "git"
},
{
"status": "affected",
"version": "54be1f6c1c37498bba557049df646cc239fa37e3",
"lessThan": "7e32da6047d9afdae8dd17b87b4c8d97363c4ee2",
"versionType": "git"
},
{
"status": "affected",
"version": "54be1f6c1c37498bba557049df646cc239fa37e3",
"lessThan": "bf86c08123c6ab8c61cc0be1dad7540db93738ff",
"versionType": "git"
}
],
"programFiles": [
"fs/smb/client/dfs_cache.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.109",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/client/dfs_cache.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93210
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37913 · Revision 1
- Added to Heist Feed
- Publisher date