CVE-2026-104036
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
27/100
Published: 2026-10-06
Modified: 2026-11-05
First seen: 2026-11-05
Status: active
Attack Surface
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
High
PR:
Low
UI:
None
S:
Unchanged
C:
Low
I:
Low
A:
High
Description
A flaw was found in SSSD's NFS idmap plugin. When retrieving cached user or group names, the plugin detects if an entry exceeds the destination buffer size but fails to abort before copying data. A local attacker can trigger this vulnerability by requesting identity lookups that resolve to oversized cached entries, resulting in an out-of-bounds write. This flaw primarily leads to a Denial of Service (DoS) by crashing the identity mapping service, and may also corrupt adjacent process memory.
Weakness Classification (1)
References & Advisories (2)
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT