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security advisoryfedoraimportantFedora 43 WebKitGTK Important Performance and Content Fixes 2026-1557aaef26
Add support for half-width fonts. Improve content filter compilation by avoiding file copies. Improve handling of out of disk space conditions when the NetworkProcess tried to write data in caches. Fix painting scrollbars when their width changes.. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-1557aaef26 2026-06-20 01:06:42.654447+00:00 -------------------------------------------------------------------------------- Name : webkitgtk Product : Fedora 43 Version : 2.52.4 Release : 1.fc43 URL : https://www.webkitgtk.org/ Summary : GTK web content engine library Description : WebKitGTK is the port of the WebKit web rendering engine to the GTK platform. -------------------------------------------------------------------------------- Update Information: Add support for half-width fonts. Improve content filter compilation by avoiding file copies. Improve handling of out of disk space conditions when the NetworkProcess tried to write data in caches. Fix painting scrollbars when their width changes. Fix playback of certain YouTube videos with low frame rates. Fix webkit://gpu not working in systems where neither libGL.so.1 nor libOpenGL.so.0 are available. Fix several crashes and rendering issues. Security fixes: CVE-2026-28847, CVE-2026-28883, CVE-2026-28901, CVE-2026-28902, CVE-2026-28903, CVE-2026-28904, CVE-2026-28905, CVE-2026-28907, CVE-2026-28942, CVE-2026-28946, CVE-2026-28947, CVE-2026-28953, CVE-2026-28955, CVE-2026-28958, CVE-2026-43658, CVE-2026-43660 -------------------------------------------------------------------------------- ChangeLog: * Wed Jun 3 2026 Michael Catanzaro - 2.52.4-1 - Update to 2.52.4 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-1557aaef26' at the command line. For more information, refer to thednf 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 -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list --
Jun 19, 2026
•Important
Fedora
203
security advisorymoderateinformation leakMageia: 2021-0096 Moderate: Thunderbird Memory Safety Issues
If Content Security Policy blocked frame navigation, the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. This could be used to leak sensitive information contained in such URIs (CVE-2021-23968). . MGASA-2021-0096 - Updated thunderbird packages fix security vulnerabilities Publication date: 04 Mar 2021 URL: https://advisories.mageia.org/MGASA-2021-0096.html Type: security Affected Mageia releases: 7, 8 CVE: CVE-2021-23968, CVE-2021-23969, CVE-2021-23973, CVE-2021-23978 If Content Security Policy blocked frame navigation, the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. This could be used to leak sensitive information contained in such URIs (CVE-2021-23968). As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin (CVE-2021-23969). When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that MediaError message may have revealed information about the resource (CVE-2021-23973). Mozilla developers Alexis Beingessner, Tyson Smith, Nika Layzell, and Mats Palmgren reported memory safety bugs present in Thunderbird 78.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code (CVE-2021-23978). References: - https://bugs.mageia.org/show_bug.cgi?id=28431 - https://www.mozilla.org/en-US/security/advisories/mfsa2021-09/ -https://www.thunderbird.net/en-US/thunderbird/78.8.0/releasenotes/ - https://www.cve.org/CVERecord?id=CVE-2021-23968 - https://www.cve.org/CVERecord?id=CVE-2021-23969 - https://www.cve.org/CVERecord?id=CVE-2021-23973 - https://www.cve.org/CVERecord?id=CVE-2021-23978 SRPMS: - 7/core/thunderbird-78.8.0-1.mga7 - 7/core/thunderbird-l10n-78.8.0-1.mga7 - 8/core/thunderbird-78.8.0-1.mga8 - 8/core/thunderbird-l10n-78.8.0-1.mga8 . Mageia 2021-0096 provides crucial patches for vulnerabilities in Thunderbird. Examine key enhancements and their potential impacts.. Thunderbird Security Updates, Mageia Issues, Content Security Threats. . LinuxSecurity.com Team
Mar 04, 2021
Mageia
200
security advisoryaccess controlMozillaScientific Linux: SLSA-2021-0661-1 Important Thunderbird Security Fix
This update upgrades Thunderbird to version 78.8.0. * Mozilla: Content Security Policy violation report could have contained the destination of a redirect (CVE-2021-23968) * Mozilla: Content Security Policy violation report could have contained the destination of a redirect (CVE-2021-23969) * Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8 (CVE-2021-23978) * Mozilla: Med [More...]. Synopsis: Important: thunderbird security update Advisory ID: SLSA-2021:0661-1 Issue Date: 2021-02-24 CVE Numbers: CVE-2021-23969 CVE-2021-23968 CVE-2021-23973 CVE-2021-23978 -- This update upgrades Thunderbird to version 78.8.0. Security Fix(es): * Mozilla: Content Security Policy violation report could have contained the destination of a redirect (CVE-2021-23968) * Mozilla: Content Security Policy violation report could have contained the destination of a redirect (CVE-2021-23969) * Mozilla: Memory safety bugs fixed in Firefox 86 and Firefox ESR 78.8 (CVE-2021-23978) * Mozilla: MediaError message property could have leaked information about cross-origin resources (CVE-2021-23973) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE -- SL7 x86_64 thunderbird-78.8.0-1.el7_9.x86_64.rpm thunderbird-debuginfo-78.8.0-1.el7_9.x86_64.rpm - Scientific Linux Development Team . Crucial announcement regarding Thunderbird, which tackles various security vulnerabilities and advances to release 78.8.0 on Scientific Linux.. Thunderbird Update, Security Fix, Scientific Linux, Mozilla Issues. . Severity: Important. LinuxSecurity.com Team
Feb 24, 2021
•Important
Scientific Linux
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