CVE-2025-32988
gnutls28 - security update
Description
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.
How to fix CVE-2025-32988
To remediate CVE-2025-32988, upgrade the affected package to a fixed version below.
- —upgrade to 3.8.12-r0 or later
- —upgrade to 3.7.1-5+deb11u8 or later
- —upgrade to 3.7.1-5+deb11u8 or later
- —upgrade to 3.7.9-2+deb12u5 or later
Is CVE-2025-32988 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 3.8.12-r0
- from 0, < 3.7.1-5+deb11u8
- from 0, < 3.7.1-5+deb11u8
- from 0, < 3.7.9-2+deb12u5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |