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sssd

A vulnerability in SSSD allows an unprivileged local user to cause memory exhaustion by repeatedly requesting lookups for nonexistent entries through the Name Service Switch (NSS) responder. The negative cache does not limit the total number of stored entries and only removes expired records when an existing key is rechecked, which can lead to unbounded cache growth. This can result in a Denial of Service (DoS) as the responder becomes unresponsive or terminates. The issue affects multiple specific versions of SSSD. The CVSS score is 5.5, indicating a medium severity level.

CVE-2026-104041 is a vulnerability in SSSD where the negative cache used by the NSS responder does not limit the total number of stored entries and only removes expired records upon rechecking existing keys. An unprivileged local user can exploit this by repeatedly requesting lookups for nonexistent entries, causing the cache to grow without bound. This behavior can exhaust memory resources, leading to a Denial of Service (DoS) as the NSS responder becomes unresponsive or terminates. The vulnerability affects numerous specific SSSD versions as enumerated in the affectedVersions list. The CVSS 3.1 base score is 5.5 with vector AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

A vulnerability in SSSD allows an unprivileged local user to cause memory exhaustion by repeatedly requesting lookups for nonexistent entries through the Name Service Switch (NSS) responder. The negative cache does not limit the total number of stored entries and only removes expired records when an

A flaw was found in SSSD. An unprivileged local user can repeatedly request lookups for nonexistent entries through the Name Service Switch (NSS)… (CVE-2026-104041)

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