CVE-2026-7837: TOCTOU with root privilege in ad_flush
A time-of-check time-of-use (TOCTOU) condition in the adflush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
alpine/netatalkto a version that resolves this vulnerability.Fixed in 4.5.0-r0
Event History
Frequently Asked Questions
What is the severity of CVE-2026-7837?
The severity of CVE-2026-7837 is rated as low with a score of 3.7.
How do I fix CVE-2026-7837?
To fix CVE-2026-7837, upgrade to a patched version of Netatalk that addresses the TOCTOU condition.
What software is affected by CVE-2026-7837?
CVE-2026-7837 affects Netatalk versions from 3.0.0 through 4.4.2.
What type of vulnerability is CVE-2026-7837?
CVE-2026-7837 is classified as a race condition vulnerability.
What can an attacker do with CVE-2026-7837?
An attacker could cause limited data modification under specific race conditions due to the TOCTOU issue.