A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of service.
CVSS Details
- CVSS 3.1 Base Score: 9.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade gnutls-daneUpgrade gnutls-develUpgrade gnutlsUpgrade gnutls-c++Upgrade gnutls-utils | May 27, 2026 | May 26, 2026 |
| Alpine Linux | — | Upgrade gnutls | May 4, 2026 | Apr 30, 2026 |
| Amazon Linux Ami 2 | — | Upgrade gnutlsUpgrade gnutls-utilsUpgrade gnutls-daneUpgrade gnutls-develUpgrade gnutls-c++Upgrade gnutls-debuginfo | Jun 9, 2026 | Jun 9, 2026 |
| Amazon_linux_2023 | — | Upgrade gnutls-utils-debuginfoUpgrade gnutls-dane-debuginfoUpgrade gnutls-c++Upgrade gnutlsUpgrade gnutls-utilsUpgrade gnutls-daneUpgrade gnutls-develUpgrade gnutls-debuginfoUpgrade gnutls-c++-debuginfoUpgrade gnutls-debugsource | Jun 9, 2026 | Apr 30, 2026 |
| Debian | — | Upgrade gnutls28 | May 20, 2026 | May 20, 2026 |
| Oracle_linux | — | Upgrade gnutlsUpgrade gnutls-utilsUpgrade gnutls-c++Upgrade gnutls-develUpgrade gnutls-dane | Jun 4, 2026 | Apr 30, 2026 |
| Redhat Openshift | — | Upgrade rhcos | Aug 27, 2026 | Apr 30, 2026 |
| Redhat_linux | — | Upgrade gnutls-c++-debuginfoUpgrade gnutls-utilsUpgrade gnutlsUpgrade gnutls-debugsourceUpgrade gnutls-utils-debuginfoUpgrade gnutls-dane-debuginfoUpgrade gnutls-fipsUpgrade gnutls-c++Upgrade gnutls-debuginfoUpgrade gnutls-develUpgrade gnutls-dane | May 28, 2026 | Apr 30, 2026 |
| Rocky_linux | — | Upgrade gnutls-daneUpgrade gnutls-utils-debuginfoUpgrade gnutls-debugsourceUpgrade gnutlsUpgrade gnutls-utilsUpgrade gnutls-develUpgrade gnutls-c++-debuginfoUpgrade gnutls-c++Upgrade gnutls-fipsUpgrade gnutls-debuginfoUpgrade gnutls-dane-debuginfo | Jun 1, 2026 | May 29, 2026 |
| Ubuntu | — | Upgrade guile-gnutls (Ubuntu Pro)Upgrade libgnutls30Upgrade libgnutls30t64Upgrade libgnutls-dane0 (Ubuntu Pro)Upgrade libgnutls28-dev (Ubuntu Pro)Upgrade gnutls-bin (Ubuntu Pro)Upgrade libgnutlsxx28 (Ubuntu Pro)Upgrade libgnutls30 (Ubuntu Pro)Upgrade libgnutls-openssl27 (Ubuntu Pro) | May 25, 2026 | May 20, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Apr 30, 2026 |
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