Medium [CVE-2026-16743] arbitrary file read via SetIconFile for systemd-homed users
This medium-severity Red Hat Linux advisory covers CVE-2026-16743.
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Summary
A flaw was found in accountsservice. The systemd-homed code path for SetIconFile opens a user-supplied filename as root without the validation and privilege drop performed by the classic handler.
A local attacker with a systemd-homed-managed account can read arbitrary files accessible to the accounts-daemon process. Red Hat Enterprise Linux is not affected.
The accountsservice versions shipped in RHEL do not include the systemd-homed SetIconFile code path introduced in later upstream releases. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).
Weakness: CWE-269.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists. Confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
Mitigation checklist
- Avoid using systemd-homed-managed accounts on systems running a vulnerable accountsservice build.
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
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