4.0 MEDIUM
- CVSS version: 3.1
- Attack vector (AV): LOCAL
- Attack complexity (AC): LOW
- Privileges required (PR): NONE
- User interaction (UI): NONE
- Scope (S): UNCHANGED
- Confidentiality impact (C): NONE
- Integrity impact (I): NONE
- Availability impact (A): LOW
by @LeSuisse Activity log
- Created automatic suggestion
-
@LeSuisse
removed
3 packages
- guile-gnutls
- python312Packages.python3-gnutls
- python313Packages.python3-gnutls
Gnutls: stack-based buffer overflow in gnutls_pkcs11_token_init() function
A flaw was found in the GnuTLS library, specifically in the gnutls_pkcs11_token_init() function that handles PKCS#11 token initialization. When a token label longer than expected is processed, the function writes past the end of a fixed-size stack buffer. This programming error can cause the application using GnuTLS to crash or, in certain conditions, be exploited for code execution. As a result, systems or applications relying on GnuTLS may be vulnerable to a denial of service or local privilege escalation attacks.
References
- https://www.gnutls.org/security-new.html#GNUTLS-SA-2025-11-18
- https://access.redhat.com/security/cve/CVE-2025-9820 x_refsource_REDHAT vdb-entry
- RHBZ#2392528 issue-tracking x_refsource_REDHAT
- https://gitlab.com/gnutls/gnutls/-/commit/1d56f96f6ab5034d677136b9d50b5a75dff0f…
- https://gitlab.com/gnutls/gnutls/-/issues/1732
- http://www.openwall.com/lists/oss-security/2025/11/20/2
- https://access.redhat.com/security/cve/CVE-2025-9820 x_refsource_REDHAT vdb-entry
- RHBZ#2392528 issue-tracking x_refsource_REDHAT
- https://gitlab.com/gnutls/gnutls/-/commit/1d56f96f6ab5034d677136b9d50b5a75dff0f…
- https://gitlab.com/gnutls/gnutls/-/issues/1732
- https://www.gnutls.org/security-new.html#GNUTLS-SA-2025-11-18
- http://www.openwall.com/lists/oss-security/2025/11/20/2
Affected products
Package maintainers
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@vcunat Vladimír Čunát <v@cunat.cz>