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Mageia 8: MGASA-2021-0397 Moderate: Kernel BPF Threat Fixes

This kernel update is based on upstream 5.10.56 and fixes atleast the following security issues: In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store . MGASA-2021-0397 - Updated kernel packages fix security vulnerabilities Publication date: 07 Aug 2021 URL: https://advisories.mageia.org/MGASA-2021-0397.html Type: security Affected Mageia releases: 8 CVE: CVE-2021-34556, CVE-2021-35477 This kernel update is based on upstream 5.10.56 and fixes atleast the following security issues: In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (CVE-2021-34556). In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value (CVE-2021-35477). Other fixes in this update: - btrfs: fix lost inode on log replay after mix of fsync, rename and inode eviction - btrfs: fix race causing unnecessary inode logging during link and rename - watchdog: iTCO_wdt: Fix detection of SMI-off case (fixes sporadic reboots on some systems) - Revert "ACPICA: Fix memory leak caused by _CID repair function", fixing boot failures on some systems - fix another ACPI issue causing some systems to boot slowly or not at all after kernel 5.10.50 - revert: 'scsi: sr: Return appropriate error code when disk is ejected' (fixes DVD opening on resume from suspend or standby, mga #29262) - Revert "usb: renesas-xhci: Fix handling of unknown ROM state" (fixes renesas usb pci stopped working, mga #29285) - Revert "drm/i915: Propagate errors on awaiting already signaled fences" and "drm/i915/gem:Asynchronous cmdparser" (fixes an issue where an app hang can cause X server to hang) For other upstream fixes, see the referenced changelogs. References: - https://bugs.mageia.org/show_bug.cgi?id=29311 - https://bugs.mageia.org/show_bug.cgi?id=29262 - https://bugs.mageia.org/show_bug.cgi?id=29285 - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.53 - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.54 - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.55 - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.56 - https://www.cve.org/CVERecord?id=CVE-2021-34556 - https://www.cve.org/CVERecord?id=CVE-2021-35477 SRPMS: - 8/core/kernel-5.10.56-1.mga8 - 8/core/kmod-virtualbox-6.1.24-1.4.mga8 - 8/core/kmod-xtables-addons-3.18-1.16.mga8 . Mageia 2021-0398 delivers essential updates for kernel security, rectifying BPF flaws along with various other system enhancements.. Mageia Kernel Update,Sensitive Information,BPF Security Fixes,Kernel Security,Security Issues. . LinuxSecurity.com Team

Aug 07, 2021 Mageia