A flaw was found in SSSD. A local attacker can exploit this vulnerability by sending a specially crafted request to the autofs responder UNIX socket. (CVE-2026-104029)
Description
A vulnerability in SSSD allows a local attacker to cause a denial of service by sending a specially crafted request to the autofs responder UNIX socket. The flaw is due to improper buffer offset calculation during request parsing, leading to an out-of-bounds memory read and crashing the autofs responder process. This issue affects multiple specific versions of SSSD. The CVSS score is 3.3, indicating a medium severity level.
CVSS v3.1
Score 3.3low
Affected software
pkg:deb/ubuntu/sssd?arch=source&distro=esm-infra-legacy/xenialpkg:deb/ubuntu/sssd?arch=source&distro=esm-infra/bionicpkg:deb/ubuntu/sssd?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/sssd?arch=source&distro=jammypkg:deb/ubuntu/sssd?arch=source&distro=noblepkg:deb/ubuntu/sssd?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-104029 is a vulnerability in SSSD where a local attacker can exploit improper buffer offset calculation in the autofs responder UNIX socket request parsing. This results in an out-of-bounds memory read that causes the autofs responder process to crash, leading to a denial of service condition. The vulnerability requires local access and does not impact confidentiality or integrity, only availability.
Potential Impact
The vulnerability causes a denial of service by crashing the autofs responder process due to an out-of-bounds memory read. There is no impact on confidentiality or integrity. The attacker must have local access to exploit this flaw.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, restrict local access to the autofs responder UNIX socket to trusted users only to mitigate potential exploitation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-104029
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:Pro:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac80fcc2cdf04f65639c4c4
Added to database: 10/08/2026, 21:49:00 UTC
Last enriched: 10/08/2026, 22:19:14 UTC
Last updated: 10/09/2026, 01:48:07 UTC
Views: 3
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