Bug 2480391 (CVE-2026-7837)

Summary: CVE-2026-7837 netatalk: Netatalk: Limited data modification due to TOCTOU condition
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: low    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Netatalk. A remote attacker may exploit a time-of-check time-of-use (TOCTOU) condition, where the state of a resource is checked, and then used, but the state changes between the check and the use. This condition, specifically in the `ad_flush` function, involves root-privileged file operations. Under specific race conditions, this vulnerability could allow an attacker to cause limited data modification.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2480445, 2480446    
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Description OSIDB Bzimport 2026-05-21 09:01:19 UTC 
A time-of-check time-of-use (TOCTOU) condition in the ad_flush 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.