logo
DATABASE RESOURCES PRICING ABOUT US

Medium: kernel

Description

**Issue Overview:** A flaw was found in the Linux kernel key management subsystem in which a local attacker could crash the kernel or corrupt the stack and additional memory (denial of service) by supplying a specially crafted RSA key. This flaw panics the machine during the verification of the RSA key. (CVE-2016-8650) The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 4.8.14 does not properly restrict the type of iterator, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device. (CVE-2016-9576) The sock_setsockopt function in net/core/sock.c in the Linux kernel before 4.8.14 mishandles negative values of sk_sndbuf and sk_rcvbuf, which allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact by leveraging the CAP_NET_ADMIN capability for a crafted setsockopt system call with the (1) SO_SNDBUFFORCE or (2) SO_RCVBUFFORCE option. (CVE-2016-9793) A flaw was found in the Linux networking subsystem where a local attacker with CAP_NET_ADMIN capabilities could cause an out of bounds read by creating a smaller-than-expected ICMP header and sending to its destination via sendto(). (CVE-2016-8399) Algorithms not compatible with mcryptd could be spawned by mcryptd with a direct crypto_alloc_tfm invocation using a "mcryptd(alg)" name construct. This causes mcryptd to crash the kernel if an arbitrary "alg" is incompatible and not intended to be used with mcryptd. (CVE-2016-10147) (Updated on 2017-01-19: CVE-2016-8399 was fixed in this release but was previously not part of this errata.) (Updated on 2017-02-22: CVE-2016-10147 was fixed in this release but was previously not part of this errata.) **Affected Packages:** kernel **Issue Correction:** Run _yum update kernel_ to update your system. You will need to reboot your system in order for the new kernel to be running. **New Packages:** i686:     kernel-debuginfo-4.4.39-34.54.amzn1.i686     kernel-headers-4.4.39-34.54.amzn1.i686     kernel-tools-debuginfo-4.4.39-34.54.amzn1.i686     kernel-tools-4.4.39-34.54.amzn1.i686     kernel-debuginfo-common-i686-4.4.39-34.54.amzn1.i686     kernel-4.4.39-34.54.amzn1.i686     kernel-devel-4.4.39-34.54.amzn1.i686     kernel-tools-devel-4.4.39-34.54.amzn1.i686     perf-debuginfo-4.4.39-34.54.amzn1.i686     perf-4.4.39-34.54.amzn1.i686 noarch:     kernel-doc-4.4.39-34.54.amzn1.noarch src:     kernel-4.4.39-34.54.amzn1.src x86_64:     perf-4.4.39-34.54.amzn1.x86_64     kernel-tools-debuginfo-4.4.39-34.54.amzn1.x86_64     kernel-4.4.39-34.54.amzn1.x86_64     kernel-devel-4.4.39-34.54.amzn1.x86_64     kernel-headers-4.4.39-34.54.amzn1.x86_64     kernel-tools-4.4.39-34.54.amzn1.x86_64     kernel-debuginfo-common-x86_64-4.4.39-34.54.amzn1.x86_64     kernel-tools-devel-4.4.39-34.54.amzn1.x86_64     perf-debuginfo-4.4.39-34.54.amzn1.x86_64     kernel-debuginfo-4.4.39-34.54.amzn1.x86_64 ### Additional References Red Hat: [CVE-2016-10147](<https://access.redhat.com/security/cve/CVE-2016-10147>), [CVE-2016-8399](<https://access.redhat.com/security/cve/CVE-2016-8399>), [CVE-2016-8650](<https://access.redhat.com/security/cve/CVE-2016-8650>), [CVE-2016-9576](<https://access.redhat.com/security/cve/CVE-2016-9576>), [CVE-2016-9793](<https://access.redhat.com/security/cve/CVE-2016-9793>) Mitre: [CVE-2016-10147](<https://vulners.com/cve/CVE-2016-10147>), [CVE-2016-8399](<https://vulners.com/cve/CVE-2016-8399>), [CVE-2016-8650](<https://vulners.com/cve/CVE-2016-8650>), [CVE-2016-9576](<https://vulners.com/cve/CVE-2016-9576>), [CVE-2016-9793](<https://vulners.com/cve/CVE-2016-9793>)


Affected Package


OS OS Version Package Name Package Version
Amazon Linux 1 kernel-debuginfo 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-headers 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-tools-debuginfo 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-tools 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-debuginfo-common-i686 4.4.39-34.54.amzn1
Amazon Linux 1 kernel 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-devel 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-tools-devel 4.4.39-34.54.amzn1
Amazon Linux 1 perf-debuginfo 4.4.39-34.54.amzn1
Amazon Linux 1 perf 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-doc 4.4.39-34.54.amzn1
Amazon Linux 1 kernel 4.4.39-34.54.amzn1
Amazon Linux 1 perf 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-tools-debuginfo 4.4.39-34.54.amzn1
Amazon Linux 1 kernel 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-devel 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-headers 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-tools 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-debuginfo-common-x86_64 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-tools-devel 4.4.39-34.54.amzn1
Amazon Linux 1 perf-debuginfo 4.4.39-34.54.amzn1
Amazon Linux 1 kernel-debuginfo 4.4.39-34.54.amzn1

Related