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Mageia 10, 9 nginx Important Heap Overflow & Memory Disclosure 2026-0301

Three security vulnerabilities in Mageia 10 and 9 related to nginx could lead to heap buffer overflows, memory disclosure, and use-after-free errors, affecting worker processes.. Publication date: 27 Jul 2026 URL: https://advisories.mageia.org/MGASA-2026-0301.html Type: security Affected Mageia releases: 10, 9 CVE: CVE-2026-42533, CVE-2026-56434, CVE-2026-60005 Description: CVE-2026-42533: Heap buffer overflow might occur in a worker process when using the map directive with regex matching if the map variable was included in a string expression after a capture affected by this map; a similar issue might happen when using a non-cacheable variable in a string expression. Thanks to Mufeed VH of Winfunc Research and Maxim Dounin. . CVE-2026-60005: Uninitialized memory access might occur when using unnamed regex captures with the "slice" directive or background cache update, which could result in worker process memory disclosure or worker process termination. . CVE-2026-56434: Use-after-free might occur when processing a specially crafted proxied backend response with the ngx_http_ssi_filter_module. Thanks to P4P3R-HAK. References: - https://bugs.mageia.org/show_bug.cgi?id=35973 - https://my.f5.com/manage/s/article/K000162097 - https://my.f5.com/manage/s/article/K000162100 - https://my.f5.com/manage/s/article/K000162098 - https://lists.opensuse.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it./message/LIWPH3EULRVLC6TMLBZYPJ5IKQGVF6C2/ - https://www.cve.org/CVERecord?id=CVE-2026-42533 - https://www.cve.org/CVERecord?id=CVE-2026-56434 - https://www.cve.org/CVERecord?id=CVE-2026-60005 SRPMS: - 10/core/nginx-1.30.4-1.mga10 - 9/core/nginx-1.30.4-1.mga9 . Mageia security update addresses multiple CVEs related to nginx with risks of memory disclosure and buffer overflow issues.. Mageia nginx security update, buffer overflow, memory disclosure. . Severity: Important. LinuxSecurity.com Team

Jul 27, 2026 •Important Mageia