libsmb2 through 6.2 Heap Out-of-Bounds Read via decode_acl Integer Underflow
libsmb2 through 6.2 contains an integer underflow vulnerability in decode_acl that allows malicious SMB servers to trigger heap out-of-bounds reads via crafted security descriptors. Attackers controlling a server or intercepting unsigned sessions can send an AclSize below 8 in a QUERY_INFO reply, bypassing ACE bounds checks and crashing the client.
CVE-2026-110714
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-2026-110714
libsmb2
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
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/sahlberg/libsmb2",
"vendor": "sahlberg",
"product": "libsmb2",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "custom",
"lessThanOrEqual": "6.2"
}
],
"collectionURL": "https://github.com/sahlberg/libsmb2",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-110714
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #42048 · Revision 1
- Added to Heist Feed
- Publisher date