ESB-2026.4537

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4537 Security update for ovmf 5 May 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: ovmf Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-1965 CVE-2026-25833 CVE-2026-25834 CVE-2026-25835 CVE-2026-34874 CVE-2026-6253 CVE-2026-6429 CVE-2026-6276 CVE-2026-5545 CVE-2026-4873 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-202621440-1 Comment: CVSS (Max): 7.7 CVE-2026-25835 (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N) CVSS Source: SUSE Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N EPSS (Max): 0.1% (23rd)* CVE-2026-34874 2026-05-03 * Not all EPSS found when published - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for ovmf Announcement ID: SUSE-SU-2026:21440-1 Release Date: 2026-04-24T13:08:28Z Rating: important o bsc#1259362 o bsc#1261469 o bsc#1261476 o bsc#1261477 o bsc#1261478 References: o bsc#1262631 o bsc#1262632 o bsc#1262635 o bsc#1262636 o bsc#1262638 o CVE-2026-1965 o CVE-2026-25833 o CVE-2026-25834 o CVE-2026-25835 o CVE-2026-34874 Cross-References: o CVE-2026-4873 o CVE-2026-5545 o CVE-2026-6253 o CVE-2026-6276 o CVE-2026-6429 o CVE-2026-1965 ( SUSE ): 6.9 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/ UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N o CVE-2026-1965 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/ S:C/C:H/I:H/A:N o CVE-2026-1965 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/ S:U/C:N/I:H/A:N o CVE-2026-25833 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N /UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N o CVE-2026-25833 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N /S:U/C:N/I:N/A:H o CVE-2026-25833 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-25834 ( SUSE ): 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N /UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N o CVE-2026-25834 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N /S:U/C:L/I:N/A:L o CVE-2026-25834 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:L/A:L o CVE-2026-25835 ( SUSE ): 8.5 CVSS:4.0/AV:L/AC:L/AT:N/PR:N /UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N o CVE-2026-25835 ( SUSE ): 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N /S:U/C:H/I:H/A:N o CVE-2026-25835 ( NVD ): 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/ S:U/C:H/I:H/A:N o CVE-2026-34874 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N CVSS scores: /UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N o CVE-2026-34874 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N /S:U/C:N/I:N/A:H o CVE-2026-34874 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-4873 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/ UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N o CVE-2026-4873 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:U/C:L/I:N/A:N o CVE-2026-5545 ( SUSE ): 8.3 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/ UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N o CVE-2026-5545 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:U/C:L/I:H/A:N o CVE-2026-6253 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/ UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N o CVE-2026-6253 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:U/C:H/I:N/A:N o CVE-2026-6276 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/ UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N o CVE-2026-6276 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:U/C:L/I:N/A:N o CVE-2026-6429 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/ UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N o CVE-2026-6429 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:U/C:H/I:N/A:N Affected o SUSE Linux Micro 6.0 Products: o SUSE Linux Micro 6.1 An update that solves 10 vulnerabilities can now be installed. Security update for ovmf Description: This update for ovmf fixes the following issues: o CVE-2026-25833: mbedtls: buffer overflow in the x509_inet_pton_ipv6() function (bsc#1261476). o CVE-2026-25834: mbedtls: client accepts signature algorithm chosen by server even if not advertised in client hello (bsc#1261477). o CVE-2026-25835: mbedtls: no pseudo-random number generator reseed when cloning an application (bsc#1261478). o CVE-2026-34874: mbedtls: NULL pointer dereference in distinguished name parsing (bsc#1261469). Security update for curl Description: This update for curl fixes the following issues: Security issues fixed: o CVE-2026-4873: connection reuse ignores TLS requirement (bsc#1262631). o CVE-2026-5545: wrong reuse of HTTP Negotiate connection (bsc#1262632). o CVE-2026-6253: proxy credentials leak over redirect-to proxy (bsc#1262635). o CVE-2026-6276: stale custom cookie host causes cookie leak (bsc#1262636). o CVE-2026-6429: netrc credential leak with reused proxy connection (bsc# 1262638). Other updates and bugfixes: o sws: prevent "connection monitor" to say disconnect twice (bsc#1259362). Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: o SUSE Linux Micro 6.1 zypper in -t patch SUSE-SLE-Micro-6.1-508=1 o SUSE Linux Micro 6.0 zypper in -t patch SUSE-SLE-Micro-6.0-695=1 Package List: o SUSE Linux Micro 6.1 (noarch) qemu-ovmf-x86_64-202402-slfo.1.1_3.1 qemu-uefi-aarch64-202402-slfo.1.1_3.1 o SUSE Linux Micro 6.0 (aarch64 s390x x86_64) curl-debuginfo-8.14.1-6.1 curl-debugsource-8.14.1-6.1 libcurl4-debuginfo-8.14.1-6.1 libcurl4-8.14.1-6.1 curl-8.14.1-6.1 References: o https://www.suse.com/security/cve/CVE-2026-1965.html o https://www.suse.com/security/cve/CVE-2026-25833.html o https://www.suse.com/security/cve/CVE-2026-25834.html o https://www.suse.com/security/cve/CVE-2026-25835.html o https://www.suse.com/security/cve/CVE-2026-34874.html o https://www.suse.com/security/cve/CVE-2026-4873.html o https://www.suse.com/security/cve/CVE-2026-5545.html o https://www.suse.com/security/cve/CVE-2026-6253.html o https://www.suse.com/security/cve/CVE-2026-6276.html o https://www.suse.com/security/cve/CVE-2026-6429.html o https://bugzilla.suse.com/show_bug.cgi?id=1259362 o https://bugzilla.suse.com/show_bug.cgi?id=1261469 o https://bugzilla.suse.com/show_bug.cgi?id=1261476 o https://bugzilla.suse.com/show_bug.cgi?id=1261477 o https://bugzilla.suse.com/show_bug.cgi?id=1261478 o https://bugzilla.suse.com/show_bug.cgi?id=1262631 o https://bugzilla.suse.com/show_bug.cgi?id=1262632 o https://bugzilla.suse.com/show_bug.cgi?id=1262635 o https://bugzilla.suse.com/show_bug.cgi?id=1262636 o https://bugzilla.suse.com/show_bug.cgi?id=1262638 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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