Stack buffer overflow in illumos reparsed nfs-basic plugin allows local users to crash the daemon
A stack-based buffer overflow in the illumos reparse point daemon (reparsed) allows a local user to crash the daemon. get_fs_locations() in usr/src/cmd/fs.d/nfs/rp_basic/libnfs_basic.c, part of the nfs-basic reparse plugin, copies the host and path components of a reparse string into a fixed 1024-byte stack buffer without checking their length. The reparsed door at /var/run/reparsed_door is readable by all users and the door server does not check the caller's credentials, so an unprivileged local user can send an nfs-basic request with an overlong host or path component to overflow the buffer. On systems built with stack protection, which is the default, this causes reparsed to abort; repeated requests place the svc:/system/filesystem/reparse service into maintenance. The service is disabled by default. The flaw has existed since 2009 (illumos-gate commit 2f172c55), and affects any illumos distribution prior to illumos-gate commit 6a2df4aa.
CVE-2026-104115
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-2026-104115
illumos-gate
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
OmniOS
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://github.com/illumos/illumos-gate",
"vendor": "illumos",
"product": "illumos-gate",
"versions": [
{
"status": "affected",
"changes": [
{
"at": "6a2df4aa5381599179ab6afb3165db81960dee35",
"status": "unaffected"
}
],
"version": "2f172c55ef76964744bc62b4500ece87f3089b4d",
"lessThan": "6a2df4aa5381599179ab6afb3165db81960dee35",
"versionType": "git"
}
],
"platforms": [
"x86"
],
"packageName": "service/file-system/nfs",
"programFiles": [
"usr/src/cmd/fs.d/nfs/rp_basic/libnfs_basic.c",
"usr/src/cmd/fs.d/reparsed/reparsed.c"
],
"collectionURL": "https://illumos.org",
"defaultStatus": "unaffected"
},
{
"vendor": "OmniOS",
"product": "OmniOS",
"versions": [
{
"status": "affected",
"version": "any",
"lessThan": "r151054",
"versionType": "custom"
},
{
"status": "affected",
"changes": [
{
"at": "r151058w",
"status": "unaffected"
}
],
"version": "r151058",
"lessThan": "r151058w",
"versionType": "custom"
},
{
"status": "affected",
"changes": [
{
"at": "r151056aw",
"status": "unaffected"
}
],
"version": "r151056",
"lessThan": "r151056aw",
"versionType": "custom"
},
{
"status": "affected",
"changes": [
{
"at": "r151054bw",
"status": "unaffected"
}
],
"version": "r151054",
"lessThan": "r151054bw",
"versionType": "custom"
}
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-104115
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #29948 · Revision 1
- Added to Heist Feed
- Publisher date