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    CVE-2026-23406: AppArmor Kernel Bug Causes Availability Risk via match_char Macro

    Microsoft’s security guidance for CVE-2026-23406 points to an AppArmor bug in the Linux kernel, described as a side-effect issue in the match_char() macro usage. In practical terms, that kind of bug matters because a security-critical parser or matcher can behave differently than the programmer...
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    • apparmor security kernel availability linux kernel cve mandatory access control
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    • Forum: Security Alerts
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