Test ID:	1.3.6.1.4.1.25623.1.1.10.2021.0575
Category:	Mageia Linux Local Security Checks
Title:	Mageia: Security Advisory (MGASA-2021-0575)
Summary:	The remote host is missing an update for the 'kernel-linus' package(s) announced via the MGASA-2021-0575 advisory.
Description:	Summary: The remote host is missing an update for the 'kernel-linus' package(s) announced via the MGASA-2021-0575 advisory. Vulnerability Insight: This kernel-linus update is based on upstream 5.15.10 and fixes at least the following security issues: A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system (CVE-2021-4083). An attacker can access kernel memory bypassing valid buffer boundaries by exploiting implementation of control request handlers in the following usb gadgets - rndis, hid, uac1, uac1_legacy and uac2. Processing of malicious control transfer requests with unexpectedly large wLength lacks assurance that this value does not exceed the buffer size. Due to this fact one is capable of reading and/or writing (depending on particular case) up to 65k of kernel memory. Devices implementing affected usb device gadget classes may be affected by buffer overflow vulnerabilities resulting in information disclosure, denial of service or execution of arbitrary code in kernel context (CVE-2021-39685). In the Linux kernel through 5.15.2, hw_atl_utils_fw_rpc_wait in drivers/net/ ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c allows an attacker (who can introduce a crafted device) to trigger an out-of-bounds write via a crafted length value (CVE-2021-43975). 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: 7.2 CVSS Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-39685 https://source.android.com/security/bulletin/2022-03-01 Common Vulnerability Exposure (CVE) ID: CVE-2021-4083 https://security.netapp.com/advisory/ntap-20220217-0005/ Debian Security Information: DSA-5096 (Google Search) https://www.debian.org/security/2022/dsa-5096 https://bugzilla.redhat.com/show_bug.cgi?id=2029923 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=054aa8d439b9 https://www.oracle.com/security-alerts/cpujul2022.html 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-2021-43975 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YODMYMGZYDXQKGJGX7TJG4XV4L5YLLBD/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X24M7KDC4OJOZNS3RDSYC7ELNELOLQ2N/ https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=b922f622592af76b57cbc566eaeccda0b31a3496 https://lore.kernel.org/netdev/163698540868.13805.17800408021782408762.git-patchwork-notify@kernel.org/T/
Copyright	Copyright (C) 2022 Greenbone AG

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