CVE-2026-25704 — Incomplete privilege drop for com.system76.CosmicGreeter.GetUserData

CVE-2026-25704

Incomplete privilege drop for com.system76.CosmicGreeter.GetUserData PUBLISHED

Description (CNA)

A Privilege Dropping / Lowering Errors/Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in cosmic-greeter can allow an attacker to regain privileges that should have been dropped and abuse them in the racy checking logic. This issue affects cosmic-greeter before https://github.Com/pop-os/cosmic-greeter/pull/426.

Affected (CNA)

Vendor / product	Versions
pop-os / cosmic-greeter	affected ? before https://github.com/pop-os/cosmic-greeter/pull/426

CWE

CWE-271, CWE-367

References

https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-25704

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.

http://www.openwall.com/lists/oss-security/2026/04/16/3