CVE-2025-32988: Red Hat Enterprise Linux 10 · Double Free
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Not known to be exploited · CVSS 6.5 Medium : upgrade to 3.8.9 when convenient.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 1.4% chance of exploitation in 30 days – higher than 73% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.8.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:HExploitation evidence
Disclosed: evidence found.
CVE published 10 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Upgrade gnutls/gnutls to 3.8.9.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red HatRed Hat Enterprise Linux 10 | Affected– | Fixed in– |
| Red HatRed Hat Enterprise Linux 8 | Affected– | Fixed in– |
| Red HatRed Hat Enterprise Linux 9 | Affected– | Fixed in– |
| Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions | Affected– | Fixed in– |
| Red HatRed Hat Enterprise Linux 9.4 Extended Update Support | Affected– | Fixed in– |
| Red HatRed Hat Ceph Storage 7 | Affected– | Fixed in– |
| Red HatRed Hat Discovery 2 | Affected– | Fixed in– |
| Red HatRed Hat Hardened Images | Affected– | Fixed in– |
| Red HatRed Hat Insights proxy 1.5 | Affected– | Fixed in– |
| Red HatRed Hat Enterprise Linux 6 | Affected– | Fixed in– |
| Red HatRed Hat Enterprise Linux 7 | Affected– | Fixed in– |
| Red HatRed Hat OpenShift Container Platform 4 | Affected– | Fixed in– |
Gnutlsgnutls/gnutlspkg:deb/gnutls/gnutlsOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Red Hat has released security updates that fix this vulnerability in GnuTLS. Users should apply the updated packages as described in Red Hat advisories RHSA-2025:16115 for Red Hat Enterprise Linux 10 and RHSA-2025:16116 for Red Hat Enterprise Linux 9. Details on applying these updates are available at https://access.redhat.com/articles/11258. No additional mitigation steps are required beyond applying the official patches.
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.
References
- access.redhat.com/errata/RHSA-2025:16115 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:16116 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:17181 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:17348 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:17361 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:17415 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:19088 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:22529 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:7477 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2025-32988 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2359622 (opens in a new tab)
- lists.gnupg.org/pipermail/gnutls-help/2025-July/004883.html (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/08/msg00005.html (opens in a new tab)
- openwall.com/lists/oss-security/2025/07/11/3 (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-082556.html (opens in a new tab)