- Issued:
- 2026-07-01
- Updated:
- 2026-07-01
RHSA-2026:34372 - Security Advisory
Synopsis
Important: gnutls security update
Type/Severity
Security Advisory: Important
Red Hat Lightspeed patch analysis
Identify and remediate systems affected by this advisory.
Topic
An update for gnutls is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS.
Security Fix(es):
- gnutls: GnuTLS: Denial of Service via DTLS zero-length fragment (CVE-2026-33845)
- gnutls: GnuTLS: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly (CVE-2026-33846)
- gnutls: Fix qsort comparator in DTLS reassembly (CVE-2026-42009)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Solution
For details on how to apply this update, which includes the changes described in this advisory, refer to:
Affected Products
- Red Hat Enterprise Linux Server - Extended Life Cycle Support 7 x86_64
- Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 7 s390x
- Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian 7 ppc64
- Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian 7 ppc64le
Fixes
- BZ - 2450624 - CVE-2026-33845 gnutls: GnuTLS: Denial of Service via DTLS zero-length fragment
- BZ - 2450625 - CVE-2026-33846 gnutls: GnuTLS: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly
- BZ - 2467279 - CVE-2026-42009 gnutls: gnutls: Denial of Service via DTLS packet reordering vulnerability
Note:
More recent versions of these packages may be available.
Click a package name for more details.
Red Hat Enterprise Linux Server - Extended Life Cycle Support 7
| SRPM | |
|---|---|
| gnutls-3.3.29-9.el7_9.1.src.rpm | SHA-256: ce39c5b13fe559eb00062934e5e2d38704f25904d84f50f359c46af226625932 |
| x86_64 | |
| gnutls-3.3.29-9.el7_9.1.i686.rpm | SHA-256: 5803a56961fd1c66f51da31bb7cd53f77c0668a1cc5d2d9e99530f41c16bf66d |
| gnutls-3.3.29-9.el7_9.1.x86_64.rpm | SHA-256: a0d9f6f682572f472f329ba9cb49b3e221fb8b9479403c82c6259170c2bcae05 |
| gnutls-c++-3.3.29-9.el7_9.1.i686.rpm | SHA-256: 16b7301b693b81b7d1fcf7cd1194342d73f85f8c8014db8c4743f7c162d708b0 |
| gnutls-c++-3.3.29-9.el7_9.1.x86_64.rpm | SHA-256: c26425fc782d525e41d401b80100a00f8ba188f076ed2d70342612186c9d80b7 |
| gnutls-dane-3.3.29-9.el7_9.1.i686.rpm | SHA-256: 5f58760cc2750d0b53ab6036d4dab574b16eb10c6ea4b1d3b681023abe1ea0cb |
| gnutls-dane-3.3.29-9.el7_9.1.x86_64.rpm | SHA-256: a6221e49e34d57c5ccaf7252699fb9994d284171d11a68a0339ac0968f869cae |
| gnutls-debuginfo-3.3.29-9.el7_9.1.i686.rpm | SHA-256: b99f2b75c13521c4b09e80f2bbee5d6c3931bc021c71840ae585f91dd8c840a6 |
| gnutls-debuginfo-3.3.29-9.el7_9.1.x86_64.rpm | SHA-256: 9d96bafe3a91db0439b6f38f126255adc139f114c3f0e20e16bdd45d3f7406e3 |
| gnutls-devel-3.3.29-9.el7_9.1.i686.rpm | SHA-256: bf9d5297c68b88eeae76d13fc1fa0f674f773f1b509e4a3f7d5e2ca5741c0654 |
| gnutls-devel-3.3.29-9.el7_9.1.x86_64.rpm | SHA-256: f4ff6feff7fd2b7bf2b267c73ae8b27399d387bab9edcf2671871c5d1daac747 |
| gnutls-utils-3.3.29-9.el7_9.1.x86_64.rpm | SHA-256: 88e5e279555fd3d7372f365b6244dfa2d93ac4723e55fb02f8c84d9bceb7da17 |
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 7
| SRPM | |
|---|---|
| gnutls-3.3.29-9.el7_9.1.src.rpm | SHA-256: ce39c5b13fe559eb00062934e5e2d38704f25904d84f50f359c46af226625932 |
| s390x | |
| gnutls-3.3.29-9.el7_9.1.s390.rpm | SHA-256: e8374222e839770da14d87cc5d09f4a62894371b015a27c5304b6b6fdc07c724 |
| gnutls-3.3.29-9.el7_9.1.s390x.rpm | SHA-256: 5ee768231e913b16ad2c175e354e62448d7e27d4e669b0841f969404dbd9e66c |
| gnutls-c++-3.3.29-9.el7_9.1.s390.rpm | SHA-256: 57f8abeed244232b96e802fd597ddd4212e8626b9ea56797ac56683311392d72 |
| gnutls-c++-3.3.29-9.el7_9.1.s390x.rpm | SHA-256: ad9eeb25d1d3769e0227ec211779a029149497d0752e91c25bbc9e6822a0addb |
| gnutls-dane-3.3.29-9.el7_9.1.s390.rpm | SHA-256: 966a08b2ef470fcbbb9de54f94cd6ef62318b444925933188fe14288e4b593b4 |
| gnutls-dane-3.3.29-9.el7_9.1.s390x.rpm | SHA-256: 5c56cd32c4798a3027605d882de985534afcd8f3f0379001d521e76997600ca5 |
| gnutls-debuginfo-3.3.29-9.el7_9.1.s390.rpm | SHA-256: 666ad50095b471092a743483a70c1071148efe465e90b6dbcd37bd911788530a |
| gnutls-debuginfo-3.3.29-9.el7_9.1.s390x.rpm | SHA-256: ae6544bf67ea933d98770d5bcb561d539b6408ae4b55674811e095a6024ccfa4 |
| gnutls-devel-3.3.29-9.el7_9.1.s390.rpm | SHA-256: cf68f8c184a6c61ba1f4dd1d47e72c39b7d8763af50f6e57c08c604d38a28b20 |
| gnutls-devel-3.3.29-9.el7_9.1.s390x.rpm | SHA-256: 87047a478140bf9457de440b7e182cbcd931bbb998a2083be3b9146346f2313c |
| gnutls-utils-3.3.29-9.el7_9.1.s390x.rpm | SHA-256: 59bcdeff4345655e83dbdfcb2c82dc00532eadb837445ed6f180433dfc621379 |
Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian 7
| SRPM | |
|---|---|
| gnutls-3.3.29-9.el7_9.1.src.rpm | SHA-256: ce39c5b13fe559eb00062934e5e2d38704f25904d84f50f359c46af226625932 |
| ppc64 | |
| gnutls-3.3.29-9.el7_9.1.ppc.rpm | SHA-256: 1b14167a86a526ab7bb1de8d9d4d672e10ef433941bde11aa0bf59d526414af2 |
| gnutls-3.3.29-9.el7_9.1.ppc64.rpm | SHA-256: b4b7b2973cb87f6c82809c8d79efc3a0697becb9f1dba66e3c0e4d93b72b46ff |
| gnutls-c++-3.3.29-9.el7_9.1.ppc.rpm | SHA-256: 8726dac4b07df8731867375aa8181b3ded9be3eb58b0fb9b7cdf24e3bdae76f4 |
| gnutls-c++-3.3.29-9.el7_9.1.ppc64.rpm | SHA-256: 9ca76ed1693b7c2b2ce1d4e5e5a70aae523a4b7cc2a805522df9af525debe0b9 |
| gnutls-dane-3.3.29-9.el7_9.1.ppc.rpm | SHA-256: bc52c7595b8bd512e27a92c353d27dfa748e4637113fdaa5a0a46bcf8c3abafd |
| gnutls-dane-3.3.29-9.el7_9.1.ppc64.rpm | SHA-256: 86d2769f67dd67a1951a9400fdbf00df0530799958e854e42371efa44cf13029 |
| gnutls-debuginfo-3.3.29-9.el7_9.1.ppc.rpm | SHA-256: 2488b2365e7cddf3cd2eb32687f5d4d1f7f524cb4ab5d7ba4ee9e4d7032d5918 |
| gnutls-debuginfo-3.3.29-9.el7_9.1.ppc64.rpm | SHA-256: 27401f2e81dc7ee385e57bab896516fd546349e488b33dfd950e62f166636fcd |
| gnutls-devel-3.3.29-9.el7_9.1.ppc.rpm | SHA-256: ab59d6e846b5aa67558171f977283fd688bd1946e5f04a668acf3a2b3ed88c5a |
| gnutls-devel-3.3.29-9.el7_9.1.ppc64.rpm | SHA-256: aaf6c146a839d1fd3ee4c59a5ea502c33e2ebbf596325c50088e7ecd90faf08f |
| gnutls-utils-3.3.29-9.el7_9.1.ppc64.rpm | SHA-256: 79fd18ddac29bccf9355857436404513996f40ae6f396278d6139aad7020083c |
Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian 7
| SRPM | |
|---|---|
| gnutls-3.3.29-9.el7_9.1.src.rpm | SHA-256: ce39c5b13fe559eb00062934e5e2d38704f25904d84f50f359c46af226625932 |
| ppc64le | |
| gnutls-3.3.29-9.el7_9.1.ppc64le.rpm | SHA-256: 5f3f8c590666a8f2c10f105bac10c28f3aa3734eca840ed06d10818a9c6b837f |
| gnutls-c++-3.3.29-9.el7_9.1.ppc64le.rpm | SHA-256: 55adcf284705928b4ebc602ac5f5647bec9fd94aca1e425574d6fa8e267f50c3 |
| gnutls-dane-3.3.29-9.el7_9.1.ppc64le.rpm | SHA-256: 33f0bd16a5ef5f960797ee8410f16ff1f158db620a54779d524e5a77ae46cb7d |
| gnutls-debuginfo-3.3.29-9.el7_9.1.ppc64le.rpm | SHA-256: a312dd407f64ceaae8d82454009a887ec5ee345a59ce9e9288b6da732484d35b |
| gnutls-devel-3.3.29-9.el7_9.1.ppc64le.rpm | SHA-256: 27433c4b1956a33c1998d9a700f8ab7b14bf458a997b872c977817308588b295 |
| gnutls-utils-3.3.29-9.el7_9.1.ppc64le.rpm | SHA-256: d735ee107ced1c2db8afd614aebca85ff6a06a9bdf9a42cd3924575c0b37a271 |
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