Test ID:	1.3.6.1.4.1.25623.1.1.10.2021.0589
Category:	Mageia Linux Local Security Checks
Title:	Mageia: Security Advisory (MGASA-2021-0589)
Summary:	The remote host is missing an update for the 'kernel-linus' package(s) announced via the MGASA-2021-0589 advisory.
Description:	Summary: The remote host is missing an update for the 'kernel-linus' package(s) announced via the MGASA-2021-0589 advisory. Vulnerability Insight: This kernel-linus update is based on upstream 5.15.11 and fixes at least the following security issues: netdevsim: Zero-initialize memory for new map's value in function nsim_bpf_map_alloc (CVE-2021-4135). Potentially malicious XEN PV backends can cause guest DoS due to unhardened frontends in the guests, even though this ought to have been prevented by containing them within a driver domain. This update fixes the issue tracked as XSA-391: blkfront (CVE-2021-28711), netfront (CVE-2021-28712), hvc_xen (CVE-2021-28713). The Linux kernel's xen-netback backend driver can be forced by guests to queue arbitrary amounts of network data, finally causing an out of memory situation in the domain the backend is running in (usually dom0). This update fixes the issues tracked as XSA-392 (CVE-2021-28714, CVE-2021-28715). rds: memory leak in __rds_conn_create() (CVE-2021-45480). For other upstream fixes, see the referenced changelogs. Affected Software/OS: 'kernel-linus' package(s) on Mageia 8. Solution: Please install the updated package(s). CVSS Score: 4.7 CVSS Vector: AV:L/AC:M/Au:N/C:N/I:N/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-28711 Debian Security Information: DSA-5050 (Google Search) https://www.debian.org/security/2022/dsa-5050 Debian Security Information: DSA-5096 (Google Search) https://www.debian.org/security/2022/dsa-5096 https://xenbits.xenproject.org/xsa/advisory-391.txt https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html Common Vulnerability Exposure (CVE) ID: CVE-2021-28712 Common Vulnerability Exposure (CVE) ID: CVE-2021-28713 Common Vulnerability Exposure (CVE) ID: CVE-2021-28714 https://xenbits.xenproject.org/xsa/advisory-392.txt Common Vulnerability Exposure (CVE) ID: CVE-2021-28715 Common Vulnerability Exposure (CVE) ID: CVE-2021-4135 https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=481221775d53 Common Vulnerability Exposure (CVE) ID: CVE-2021-45480 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.11 https://github.com/torvalds/linux/commit/5f9562ebe710c307adc5f666bf1a2162ee7977c0
Copyright	Copyright (C) 2022 Greenbone AG

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