Test ID:	1.3.6.1.4.1.25623.1.1.10.2021.0224
Category:	Mageia Linux Local Security Checks
Title:	Mageia: Security Advisory (MGASA-2021-0224)
Summary:	The remote host is missing an update for the 'kernel, kmod-virtualbox, kmod-xtables-addons' package(s) announced via the MGASA-2021-0224 advisory.
Description:	Summary: The remote host is missing an update for the 'kernel, kmod-virtualbox, kmod-xtables-addons' package(s) announced via the MGASA-2021-0224 advisory. Vulnerability Insight: This kernel update is based on upstream 5.10.41 and fixes at least the following security issues: A double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system (CVE-2021-3564). kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit (CVE-2021-33200). Other fixes in this update: - proc: Check /proc/$pid/attr/ writes against file opener For other upstream fixes, see the referenced changelogs. Affected Software/OS: 'kernel, kmod-virtualbox, kmod-xtables-addons' package(s) on Mageia 7, Mageia 8. Solution: Please install the updated package(s). CVSS Score: 7.2 CVSS Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-33200 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JJCABL43FT3FKRX5DBPZG25FNKR6CEK4/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7LR3OKKPHIBGOMHN476CMLW2T7UG53QX/ https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3d0220f6861d713213b015b582e9f21e5b28d2e0 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a7036191277f9fa68d92f2071ddc38c09b1e5ee5 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb01a1bba579b4b1c5566af24d95f1767859771e https://www.openwall.com/lists/oss-security/2021/05/27/1 Common Vulnerability Exposure (CVE) ID: CVE-2021-3564 [debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html [debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html [oss-security] 20210525 CVE-2021-3564 Linux Bluetooth device initialization implementation bug http://www.openwall.com/lists/oss-security/2021/05/25/1 [oss-security] 20210601 Re: CVE-2021-3564 Linux Bluetooth device initialization implementation bug http://www.openwall.com/lists/oss-security/2021/06/01/2 https://bugzilla.redhat.com/show_bug.cgi?id=1964139 https://www.openwall.com/lists/oss-security/2021/05/25/1
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