Test ID:	1.3.6.1.4.1.25623.1.1.12.2021.5130.1
Category:	Ubuntu Local Security Checks
Title:	Ubuntu: Security Advisory (USN-5130-1)
Summary:	The remote host is missing an update for the 'linux' package(s) announced via the USN-5130-1 advisory.
Description:	Summary: The remote host is missing an update for the 'linux' package(s) announced via the USN-5130-1 advisory. Vulnerability Insight: Jann Horn discovered a race condition in the tty subsystem of the Linux kernel in the locking for the TIOCSPGRP ioctl(), leading to a use-after- free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-29661) Jann Horn discovered that the tty subsystem of the Linux kernel did not use consistent locking in some situations, leading to a read-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-29660) Affected Software/OS: 'linux' package(s) on Ubuntu 14.04. 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-2020-29660 Debian Security Information: DSA-4843 (Google Search) https://www.debian.org/security/2021/dsa-4843 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/ http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.html https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c8bcd9c5be24fb9e6132e97da5a35e55a83e36b9 https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html http://www.openwall.com/lists/oss-security/2020/12/10/1 Common Vulnerability Exposure (CVE) ID: CVE-2020-29661 https://security.netapp.com/advisory/ntap-20210122-0001/ http://packetstormsecurity.com/files/160681/Linux-TIOCSPGRP-Broken-Locking.html https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54ffccbf053b5b6ca4f6e45094b942fab92a25fc https://www.oracle.com/security-alerts/cpuoct2021.html
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