CVE-2025-32988
MediumCVSS 6.5Exploitation Probability (EPSS)
Elevated risk64th percentile - higher than 64% of all known CVEs
Summary
A double-free vulnerability was found in GnuTLS in the export logic of Subject Alternative Name (SAN) entries containing an otherName. The flaw is due to incorrect ownership handling of ASN.1 nodes, leading to a double-free condition when the parent function later attempts to free the same structure.
Risk Assessment
An attacker can trigger this vulnerability using public GnuTLS APIs, potentially causing denial of service (DoS) or memory corruption, which may lead to unpredictable system behavior.
Recommendation
Immediately update GnuTLS to a patched version that fixes the double-free issue. Monitor official security advisories from your Linux distribution for the fix.
Original NVD description (English source)
A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the type-id OID is invalid or malformed, GnuTLS will call asn1_delete_structure() on an ASN.1 node it does not own, leading to a double-free condition when the parent function or caller later attempts to free the same structure. This vulnerability can be triggered using only public GnuTLS APIs and may result in denial of service or memory corruption, depending on allocator behavior.