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CVE-2026-33845
7.5 HIGH
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): None (N)
- Integrity (I): None (N)
- Availability (A): High (H)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): None (N)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): None (N)
- Modified Availability (MA): High (H)
Activity log
- Created suggestion
Gnutls: gnutls: denial of service via dtls zero-length fragment
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.
References
Affected products
rhcos
gnutls
Matching in nixpkgs
pkgs.gnutls
GNU Transport Layer Security Library
pkgs.guile-gnutls
Guile bindings for GnuTLS library
pkgs.python312Packages.python3-gnutls
Python wrapper for the GnuTLS library
-
nixos-25.11 python3-gnutls-3.1.10
- nixos-25.11-small python3-gnutls-3.1.10
- nixpkgs-25.11-darwin python3-gnutls-3.1.10
pkgs.python313Packages.python3-gnutls
Python wrapper for the GnuTLS library
-
nixos-unstable python3-gnutls-3.1.10
- nixpkgs-unstable python3-gnutls-3.1.10
- nixos-unstable-small python3-gnutls-3.1.10
-
nixos-25.11 python3-gnutls-3.1.10
- nixos-25.11-small python3-gnutls-3.1.10
- nixpkgs-25.11-darwin python3-gnutls-3.1.10
pkgs.python314Packages.python3-gnutls
Python wrapper for the GnuTLS library
-
nixos-unstable python3-gnutls-3.1.10
- nixpkgs-unstable python3-gnutls-3.1.10
- nixos-unstable-small python3-gnutls-3.1.10
Package maintainers
-
@vcunat Vladimír Čunát <v@cunat.cz>
-
@foo-dogsquared Gabriel Arazas <foodogsquared@foodogsquared.one>
-
@charlieshanley Charlie Hanley <charlieshanley@gmail.com>