ALPINE-CVE-2026-33846
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-33846
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33846.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-33846
- Upstream
- Published
- 2026-05-04T10:15:59.690Z
- Modified
- 2026-05-11T15:31:09.325112Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in mergehandshakepacket() where incoming handshake fragments are matched and merged based solely on handshake type, without validating that the messagelength field remains consistent across all fragments of the same logical message. An attacker can exploit this by sending crafted DTLS fragments with conflicting messagelength values, causing the implementation to allocate a buffer based on a smaller initial fragment and subsequently write beyond its bounds using larger, inconsistent fragments. Because the merge operation does not enforce proper bounds checking against the allocated buffer size, this results in an out-of-bounds write on the heap. The vulnerability is remotely exploitable without authentication via the DTLS handshake path and can lead to application crashes or potential memory corruption.
- References
Affected packages
Alpine:v3.20 / gnutls
Package
- Name
- gnutls
- Purl
- pkg:apk/alpine/gnutls?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed3.8.13-r0
Affected versions
2.*
2.6.4-r0
2.6.5-r0
2.6.6-r0
2.8.1-r0
2.8.1-r1
2.8.3-r0
2.8.5-r0
2.8.5-r1
2.8.6-r0
2.8.6-r1
2.8.6-r2
2.8.6-r3
2.10.4-r0
2.10.5-r0
2.10.5-r1
2.10.5-r2
2.12.6.1-r0
2.12.7-r0
2.12.16-r0
3.*
3.0.17-r0
3.0.18-r0
3.0.19-r0
3.0.20-r0
3.0.21-r0
3.0.22-r0
3.1.0-r0
3.1.1-r0
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.5-r0
3.1.5-r1
3.1.6-r1
3.1.7-r1
3.1.8-r1
3.1.9-r0
3.1.10-r0
3.1.11-r0
3.2.1-r0
3.2.1-r1
3.2.2-r1
3.2.3-r0
3.2.4-r0
3.2.4-r1
3.2.5-r0
3.2.6-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0
3.2.10-r0
3.2.11-r0
3.2.12-r0
3.2.12.1-r0
3.3.1-r0
3.3.2-r0
3.3.4-r0
3.3.5-r0
3.3.6-r0
3.3.7-r0
3.3.7-r1
3.3.8-r0
3.3.9-r0
3.3.9-r1
3.3.10-r0
3.3.11-r0
3.3.12-r0
3.3.13-r0
3.3.14-r0
3.4.0-r0
3.4.1-r0
3.4.1-r1
3.4.2-r0
3.4.3-r0
3.4.4.1-r0
3.4.5-r0
3.4.6-r0
3.4.7-r0
3.4.8-r0
3.4.9-r0
3.4.10-r0
3.4.11-r0
3.4.13-r0
3.4.14-r0
3.4.14-r1
3.4.15-r0
3.4.16-r0
3.4.17-r0
3.5.8-r0
3.5.8-r1
3.5.9-r0
3.5.10-r0
3.5.11-r0
3.5.12-r0
3.5.13-r0
3.5.13-r1
3.5.15-r0
3.6.0-r0
3.6.1-r0
3.6.2-r0
3.6.4-r0
3.6.5-r0
3.6.6-r0
3.6.7-r0
3.6.8-r0
3.6.8-r1
3.6.9-r0
3.6.10-r0
3.6.11.1-r0
3.6.11.1-r1
3.6.12-r0
3.6.13-r0
3.6.13-r1
3.6.13-r2
3.6.14-r0
3.6.15-r0
3.6.15-r1
3.7.0-r0
3.7.1-r0
3.7.3-r0
3.7.4-r0
3.7.5-r0
3.7.6-r0
3.7.7-r0
3.7.7-r1
3.7.8-r0
3.7.8-r1
3.7.8-r2
3.8.0-r0
3.8.0-r1
3.8.0-r2
3.8.0-r3
3.8.0-r4
3.8.1-r0
3.8.3-r0
3.8.5-r0
3.8.12-r0
Alpine:v3.21 / gnutls
Package
- Name
- gnutls
- Purl
- pkg:apk/alpine/gnutls?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed3.8.13-r0
Affected versions
2.*
2.6.4-r0
2.6.5-r0
2.6.6-r0
2.8.1-r0
2.8.1-r1
2.8.3-r0
2.8.5-r0
2.8.5-r1
2.8.6-r0
2.8.6-r1
2.8.6-r2
2.8.6-r3
2.10.4-r0
2.10.5-r0
2.10.5-r1
2.10.5-r2
2.12.6.1-r0
2.12.7-r0
2.12.16-r0
3.*
3.0.17-r0
3.0.18-r0
3.0.19-r0
3.0.20-r0
3.0.21-r0
3.0.22-r0
3.1.0-r0
3.1.1-r0
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.5-r0
3.1.5-r1
3.1.6-r1
3.1.7-r1
3.1.8-r1
3.1.9-r0
3.1.10-r0
3.1.11-r0
3.2.1-r0
3.2.1-r1
3.2.2-r1
3.2.3-r0
3.2.4-r0
3.2.4-r1
3.2.5-r0
3.2.6-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0
3.2.10-r0
3.2.11-r0
3.2.12-r0
3.2.12.1-r0
3.3.1-r0
3.3.2-r0
3.3.4-r0
3.3.5-r0
3.3.6-r0
3.3.7-r0
3.3.7-r1
3.3.8-r0
3.3.9-r0
3.3.9-r1
3.3.10-r0
3.3.11-r0
3.3.12-r0
3.3.13-r0
3.3.14-r0
3.4.0-r0
3.4.1-r0
3.4.1-r1
3.4.2-r0
3.4.3-r0
3.4.4.1-r0
3.4.5-r0
3.4.6-r0
3.4.7-r0
3.4.8-r0
3.4.9-r0
3.4.10-r0
3.4.11-r0
3.4.13-r0
3.4.14-r0
3.4.14-r1
3.4.15-r0
3.4.16-r0
3.4.17-r0
3.5.8-r0
3.5.8-r1
3.5.9-r0
3.5.10-r0
3.5.11-r0
3.5.12-r0
3.5.13-r0
3.5.13-r1
3.5.15-r0
3.6.0-r0
3.6.1-r0
3.6.2-r0
3.6.4-r0
3.6.5-r0
3.6.6-r0
3.6.7-r0
3.6.8-r0
3.6.8-r1
3.6.9-r0
3.6.10-r0
3.6.11.1-r0
3.6.11.1-r1
3.6.12-r0
3.6.13-r0
3.6.13-r1
3.6.13-r2
3.6.14-r0
3.6.15-r0
3.6.15-r1
3.7.0-r0
3.7.1-r0
3.7.3-r0
3.7.4-r0
3.7.5-r0
3.7.6-r0
3.7.7-r0
3.7.7-r1
3.7.8-r0
3.7.8-r1
3.7.8-r2
3.8.0-r0
3.8.0-r1
3.8.0-r2
3.8.0-r3
3.8.0-r4
3.8.1-r0
3.8.3-r0
3.8.5-r0
3.8.8-r0
3.8.12-r0
Alpine:v3.22 / gnutls
Package
- Name
- gnutls
- Purl
- pkg:apk/alpine/gnutls?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed3.8.13-r0
Affected versions
2.*
2.6.4-r0
2.6.5-r0
2.6.6-r0
2.8.1-r0
2.8.1-r1
2.8.3-r0
2.8.5-r0
2.8.5-r1
2.8.6-r0
2.8.6-r1
2.8.6-r2
2.8.6-r3
2.10.4-r0
2.10.5-r0
2.10.5-r1
2.10.5-r2
2.12.6.1-r0
2.12.7-r0
2.12.16-r0
3.*
3.0.17-r0
3.0.18-r0
3.0.19-r0
3.0.20-r0
3.0.21-r0
3.0.22-r0
3.1.0-r0
3.1.1-r0
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.5-r0
3.1.5-r1
3.1.6-r1
3.1.7-r1
3.1.8-r1
3.1.9-r0
3.1.10-r0
3.1.11-r0
3.2.1-r0
3.2.1-r1
3.2.2-r1
3.2.3-r0
3.2.4-r0
3.2.4-r1
3.2.5-r0
3.2.6-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0
3.2.10-r0
3.2.11-r0
3.2.12-r0
3.2.12.1-r0
3.3.1-r0
3.3.2-r0
3.3.4-r0
3.3.5-r0
3.3.6-r0
3.3.7-r0
3.3.7-r1
3.3.8-r0
3.3.9-r0
3.3.9-r1
3.3.10-r0
3.3.11-r0
3.3.12-r0
3.3.13-r0
3.3.14-r0
3.4.0-r0
3.4.1-r0
3.4.1-r1
3.4.2-r0
3.4.3-r0
3.4.4.1-r0
3.4.5-r0
3.4.6-r0
3.4.7-r0
3.4.8-r0
3.4.9-r0
3.4.10-r0
3.4.11-r0
3.4.13-r0
3.4.14-r0
3.4.14-r1
3.4.15-r0
3.4.16-r0
3.4.17-r0
3.5.8-r0
3.5.8-r1
3.5.9-r0
3.5.10-r0
3.5.11-r0
3.5.12-r0
3.5.13-r0
3.5.13-r1
3.5.15-r0
3.6.0-r0
3.6.1-r0
3.6.2-r0
3.6.4-r0
3.6.5-r0
3.6.6-r0
3.6.7-r0
3.6.8-r0
3.6.8-r1
3.6.9-r0
3.6.10-r0
3.6.11.1-r0
3.6.11.1-r1
3.6.12-r0
3.6.13-r0
3.6.13-r1
3.6.13-r2
3.6.14-r0
3.6.15-r0
3.6.15-r1
3.7.0-r0
3.7.1-r0
3.7.3-r0
3.7.4-r0
3.7.5-r0
3.7.6-r0
3.7.7-r0
3.7.7-r1
3.7.8-r0
3.7.8-r1
3.7.8-r2
3.8.0-r0
3.8.0-r1
3.8.0-r2
3.8.0-r3
3.8.0-r4
3.8.1-r0
3.8.3-r0
3.8.5-r0
3.8.8-r0
3.8.12-r0
Alpine:v3.23 / gnutls
Package
- Name
- gnutls
- Purl
- pkg:apk/alpine/gnutls?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed3.8.13-r0
Affected versions
2.*
2.6.4-r0
2.6.5-r0
2.6.6-r0
2.8.1-r0
2.8.1-r1
2.8.3-r0
2.8.5-r0
2.8.5-r1
2.8.6-r0
2.8.6-r1
2.8.6-r2
2.8.6-r3
2.10.4-r0
2.10.5-r0
2.10.5-r1
2.10.5-r2
2.12.6.1-r0
2.12.7-r0
2.12.16-r0
3.*
3.0.17-r0
3.0.18-r0
3.0.19-r0
3.0.20-r0
3.0.21-r0
3.0.22-r0
3.1.0-r0
3.1.1-r0
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.5-r0
3.1.5-r1
3.1.6-r1
3.1.7-r1
3.1.8-r1
3.1.9-r0
3.1.10-r0
3.1.11-r0
3.2.1-r0
3.2.1-r1
3.2.2-r1
3.2.3-r0
3.2.4-r0
3.2.4-r1
3.2.5-r0
3.2.6-r0
3.2.7-r0
3.2.8-r0
3.2.9-r0
3.2.10-r0
3.2.11-r0
3.2.12-r0
3.2.12.1-r0
3.3.1-r0
3.3.2-r0
3.3.4-r0
3.3.5-r0
3.3.6-r0
3.3.7-r0
3.3.7-r1
3.3.8-r0
3.3.9-r0
3.3.9-r1
3.3.10-r0
3.3.11-r0
3.3.12-r0
3.3.13-r0
3.3.14-r0
3.4.0-r0
3.4.1-r0
3.4.1-r1
3.4.2-r0
3.4.3-r0
3.4.4.1-r0
3.4.5-r0
3.4.6-r0
3.4.7-r0
3.4.8-r0
3.4.9-r0
3.4.10-r0
3.4.11-r0
3.4.13-r0
3.4.14-r0
3.4.14-r1
3.4.15-r0
3.4.16-r0
3.4.17-r0
3.5.8-r0
3.5.8-r1
3.5.9-r0
3.5.10-r0
3.5.11-r0
3.5.12-r0
3.5.13-r0
3.5.13-r1
3.5.15-r0
3.6.0-r0
3.6.1-r0
3.6.2-r0
3.6.4-r0
3.6.5-r0
3.6.6-r0
3.6.7-r0
3.6.8-r0
3.6.8-r1
3.6.9-r0
3.6.10-r0
3.6.11.1-r0
3.6.11.1-r1
3.6.12-r0
3.6.13-r0
3.6.13-r1
3.6.13-r2
3.6.14-r0
3.6.15-r0
3.6.15-r1
3.7.0-r0
3.7.1-r0
3.7.3-r0
3.7.4-r0
3.7.5-r0
3.7.6-r0
3.7.7-r0
3.7.7-r1
3.7.8-r0
3.7.8-r1
3.7.8-r2
3.8.0-r0
3.8.0-r1
3.8.0-r2
3.8.0-r3
3.8.0-r4
3.8.1-r0
3.8.3-r0
3.8.5-r0
3.8.8-r0
3.8.10-r0
3.8.11-r0
3.8.12-r0