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Fedora 43 Chromium Important Buffer Overflow Input Issues 2026-acf674bc6a

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Fedora 43 python-django5 Low Risk Data Exposure Bugs 2026-fbb9501b22

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Fedora 43 dotnet10.0 Critical CVE Fixes Update 2026-d9817786d6

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Fedora 43 mupdf Critical Out-of-Bounds Read Fix Advisory 2026-8870088088

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Fedora 43 wget1 Critical Memory Corruption DoS Fix 2026-7bbb52b49d

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Fedora 43 mbedtls 3.6.7 Important Fixes for Multiple CVEs

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Fedora 43 sssd Critical Use-After-Free and GPO Cache Issues 2026-9ab663dcd4

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Fedora 44 Chromium Significant Buffer Overflow and Input Validation Issues

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Fedora 44 Skopeo Critical DoS Fix CVE-2026-27145 Advisory 2026-9b2e56edf5

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[{"id":506,"title":"Yes \u2014 critical security patches should install automatically.","votes":0,"type":"x","order":1,"pct":0,"resources":[]},{"id":507,"title":"No \u2014 every update should be tested before deployment.","votes":3,"type":"x","order":2,"pct":60,"resources":[]},{"id":508,"title":"Only critical vulnerabilities should auto-install.","votes":0,"type":"x","order":3,"pct":0,"resources":[]},{"id":509,"title":"I patch when Reddit starts panicking.","votes":2,"type":"x","order":4,"pct":40,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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Ls Advisories Ubuntu Esm H240
Price Tag%201security advisoryUbunturemote execution

Ubuntu 26.04 LTS ngtcp2 High Remote Code Execution Vuln USN-8300-1

ngtcp2 could be made to run programs as your login if it received specially crafted network traffic when qlog was enabled.. ========================================================================== Ubuntu Security Notice USN-8300-1 May 25, 2026 ngtcp2 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 26.04 LTS - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: ngtcp2 could be made to run programs as your login if it received specially crafted network traffic when qlog was enabled. Software Description: - ngtcp2: RFC9000 QUIC protocol implementation Details: Zou Dikai discovered that ngtcp2 serialized peer transport parameters into a fixed 1024-byte stack buffer without bounds checking. When qlog was enabled, a remote attacker could possibly use this issue to execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS libngtcp2-16 1.16.0-1ubuntu0.1 libngtcp2-crypto-gnutls-dev 1.16.0-1ubuntu0.1 libngtcp2-crypto-gnutls8 1.16.0-1ubuntu0.1 libngtcp2-crypto-ossl-dev 1.16.0-1ubuntu0.1 libngtcp2-crypto-ossl0 1.16.0-1ubuntu0.1 libngtcp2-dev 1.16.0-1ubuntu0.1 Ubuntu 25.10 libngtcp2-16 1.11.0-1+deb13u1build0.25.10.1 libngtcp2-crypto-gnutls-dev 1.11.0-1+deb13u1build0.25.10.1 libngtcp2-crypto-gnutls8 1.11.0-1+deb13u1build0.25.10.1 libngtcp2-dev 1.11.0-1+deb13u1build0.25.10.1 ngtcp2-client 1.11.0-1+deb13u1build0.25.10.1 ngtcp2-server 1.11.0-1+deb13u1build0.25.10.1 Ubuntu 24.04 LTS libngtcp2-9 0.12.1+dfsg-1+deb12u1build0.24.04.1 libngtcp2-crypto-gnutls-dev 0.12.1+dfsg-1+deb12u1build0.24.04.1 libngtcp2-crypto-gnutls2 0.12.1+dfsg-1+deb12u1build0.24.04.1 libngtcp2-dev 0.12.1+dfsg-1+deb12u1build0.24.04.1 ngtcp2-client 0.12.1+dfsg-1+deb12u1build0.24.04.1 ngtcp2-server 0.12.1+dfsg-1+deb12u1build0.24.04.1 Ubuntu 22.04 LTS libngtcp2-0 0.1.0+dfsg-1ubuntu0.1~esm1 Available with Ubuntu Pro libngtcp2-crypto-gnutls-dev 0.1.0+dfsg-1ubuntu0.1~esm1 Available with Ubuntu Pro libngtcp2-crypto-gnutls0 0.1.0+dfsg-1ubuntu0.1~esm1 Available with Ubuntu Pro libngtcp2-dev 0.1.0+dfsg-1ubuntu0.1~esm1 Available with Ubuntu Pro ngtcp2-client 0.1.0+dfsg-1ubuntu0.1~esm1 Available with Ubuntu Pro ngtcp2-server 0.1.0+dfsg-1ubuntu0.1~esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8300-1 CVE-2026-40170 Package Information: https://launchpad.net/ubuntu/+source/ngtcp2/1.16.0-1ubuntu0.1 https://launchpad.net/ubuntu/+source/ngtcp2/1.11.0-1+deb13u1build0.25.10.1 https://launchpad.net/ubuntu/+source/ngtcp2/0.12.1+dfsg-1+deb12u1build0.24.04.1 . ngtcp2 could run programs as your login through specially crafted traffic when qlog enabled in Ubuntu releases.. ngtcp2 security. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 May 25, 2026 •Critical Ubuntu
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Ls Advisories Fedora Esm H240
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Fedora 44 ngtcp2 Critical Denial of Service Fix CVE-2026-40170

Update to 1.22.1 (rhbz#2452790) Fixes CVE-2026-40170. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-705eb9cf95 2026-04-28 01:29:45.334770+00:00 -------------------------------------------------------------------------------- Name : ngtcp2 Product : Fedora 44 Version : 1.22.1 Release : 1.fc44 URL : https://github.com/ngtcp2/ngtcp2 Summary : Implementation of RFC 9000 QUIC protocol Description : "Call it TCP/2. One More Time." ngtcp2 project is an effort to implement RFC9000 QUIC protocol. -------------------------------------------------------------------------------- Update Information: Update to 1.22.1 (rhbz#2452790) Fixes CVE-2026-40170 -------------------------------------------------------------------------------- ChangeLog: * Mon Apr 20 2026 Petr Men\u0161k - 1.22.1-1 - Update to 1.22.1 (rhbz#2452790) - Fixes CVE-2026-40170 -------------------------------------------------------------------------------- References: [ 1 ] Bug #2452790 - ngtcp2-1.22.1 is available https://bugzilla.redhat.com/show_bug.cgi?id=2452790 [ 2 ] Bug #2459283 - CVE-2026-40170 ngtcp2: ngtcp2: Denial of service via stack buffer overflow during QUIC handshake [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2459283 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-705eb9cf95' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- . Fedora 44 ngtcp2 1.22.1 update fixes CVE-2026-40170 critical buffer overflow issue..ngtcp2 buffer overflow update Fedora critical. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 Apr 28, 2026 •Critical Fedora
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Ls Advisories Fedora Esm H240
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Fedora 43 ngtcp2 1.22.1 Critical DoS Fix CVE-2026-40170 Advisory

Update to 1.22.1 (rhbz#2452790) Fixes CVE-2026-40170. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-a0f25484e9 2026-04-28 00:55:52.209310+00:00 -------------------------------------------------------------------------------- Name : ngtcp2 Product : Fedora 43 Version : 1.22.1 Release : 1.fc43 URL : https://github.com/ngtcp2/ngtcp2 Summary : Implementation of RFC 9000 QUIC protocol Description : "Call it TCP/2. One More Time." ngtcp2 project is an effort to implement RFC9000 QUIC protocol. -------------------------------------------------------------------------------- Update Information: Update to 1.22.1 (rhbz#2452790) Fixes CVE-2026-40170 -------------------------------------------------------------------------------- ChangeLog: * Mon Apr 20 2026 Petr Men\u0161k - 1.22.1-1 - Update to 1.22.1 (rhbz#2452790) - Fixes CVE-2026-40170 -------------------------------------------------------------------------------- References: [ 1 ] Bug #2452790 - ngtcp2-1.22.1 is available https://bugzilla.redhat.com/show_bug.cgi?id=2452790 [ 2 ] Bug #2459283 - CVE-2026-40170 ngtcp2: ngtcp2: Denial of service via stack buffer overflow during QUIC handshake [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2459283 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-a0f25484e9' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- . Fedora 43 updates ngtcp2 to 1.22.1 addressing critical buffer overflow issue in QUIChandshake.. Fedora 43,nqtcp2 update,CVE-2026-40170,buffer overflow. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 Apr 28, 2026 •Critical Fedora
87
Ls Advisories Debian Esm H240
Price Tag%201security advisoryupdatebuffer overflow

Debian DSA-6222-1 ngtcp2 Important Buffer Overflow CVE-2026-40170

Zou Dikai discovered a buffer overflow in ngtcp2, a QUIC protocol library. For the oldstable distribution (bookworm), this problem has been fixed in version 0.12.1+dfsg-1+deb12u1. For the stable distribution (trixie), this problem has been fixed in version 1.11.0-1+deb13u1.. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6222-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/security/ Moritz Muehlenhoff April 21, 2026 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : ngtcp2 CVE ID : CVE-2026-40170 Zou Dikai discovered a buffer overflow in ngtcp2, a QUIC protocol library. For the oldstable distribution (bookworm), this problem has been fixed in version 0.12.1+dfsg-1+deb12u1. For the stable distribution (trixie), this problem has been fixed in version 1.11.0-1+deb13u1. We recommend that you upgrade your ngtcp2 packages. For the detailed security status of ngtcp2 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/ngtcp2 Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it. . Critical buffer overflow in ngtcp2 library patched in recent Debian updates for oldstable and stable releases.. Debian Advisory, ngtcp2 Security, QUIC Library Fix, Buffer Overflow Update. . Severity: Important. LinuxSecurity.com Team

Calendar%202 Apr 21, 2026 •Important Debian
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[{"id":506,"title":"Yes \u2014 critical security patches should install automatically.","votes":0,"type":"x","order":1,"pct":0,"resources":[]},{"id":507,"title":"No \u2014 every update should be tested before deployment.","votes":3,"type":"x","order":2,"pct":60,"resources":[]},{"id":508,"title":"Only critical vulnerabilities should auto-install.","votes":0,"type":"x","order":3,"pct":0,"resources":[]},{"id":509,"title":"I patch when Reddit starts panicking.","votes":2,"type":"x","order":4,"pct":40,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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