{"id":"MGASA-2017-0003","summary":"Updated kernel-linus packages fix security vulnerabilities","details":"This update is based on upstream 4.4.39 and fixes at least the following\nsecurity issues:\n\nDue to lack of size checking on ICMP header length, it is possible to\ncause out-of-bounds read on stack (CVE-2016-8399)\n\nThe TCP stack in the Linux kernel before 4.8.10 mishandles skb\ntruncation, which allows local users to cause a denial of service\n(system crash) via a crafted application that makes sendto system calls,\nrelated to net/ipv4/tcp_ipv4.c and net/ipv6/tcp_ipv6.c (CVE-2016-8645).\n\nThe mpi_powm function in lib/mpi/mpi-pow.c in the Linux kernel through\n4.8.11 does not ensure that memory is allocated for limb data, which\nallows local users to cause a denial of service (stack memory corruption\nand panic) via an add_key system call for an RSA key with a zero\nexponent (CVE-2016-8650).\n\nA race condition issue leading to a use-after-free flaw was found in the\nway the raw packet sockets implementation in the Linux kernel networking\nsubsystem handled synchronization while creating the TPACKET_V3 ring\nbuffer. A local user able to open a raw packet socket (requires the\nCAP_NET_RAW capability) could use this flaw to elevate their privileges\non the system (CVE-2016-8655).\n\nA use-after-free vulnerability in the SCSI generic driver allows users\nwith write access to /dev/sg* or /dev/bsg* to elevate their privileges\n(CVE-2016-9576).\n\nLinux kernel built with the Kernel-based Virtual Machine(CONFIG_KVM)\nsupport is vulnerable to an information leakage issue. It could occur\non x86 platform, while emulating instructions in 32bit mode. A \nuser/process could use this flaw to leak host kernel memory bytes\n(CVE-2016-9756).\n\nA bug in SO_{SND|RCV}BUFFORCE setsockopt() implementation allows\nCAP_NET_ADMIN users to set negative sk_sndbuf or sk_rcvbuf values.\nA user could use this flaw to cause various memory corruptions,\ncrashes and OOM (CVE-2016-9793).\n\nA use-after-free vulnerability was found in ALSA pcm layer, which allows\nlocal users to cause a denial of service, memory corruption, or possibly\nother unspecified impact (CVE-2016-9794).\n\nFor other upstream fixes in this update, see the referenced changelogs.\n","modified":"2026-02-04T03:51:52.455731Z","published":"2017-01-03T22:05:03Z","related":["CVE-2016-8399","CVE-2016-8645","CVE-2016-8650","CVE-2016-8655","CVE-2016-9576","CVE-2016-9756","CVE-2016-9793","CVE-2016-9794"],"references":[{"type":"ADVISORY","url":"https://advisories.mageia.org/MGASA-2017-0003.html"},{"type":"REPORT","url":"https://bugs.mageia.org/show_bug.cgi?id=19991"},{"type":"REPORT","url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.33"},{"type":"REPORT","url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.34"},{"type":"REPORT","url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.35"},{"type":"REPORT","url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.36"},{"type":"REPORT","url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.37"},{"type":"REPORT","url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.38"},{"type":"REPORT","url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.39"}],"affected":[{"package":{"name":"kernel-linus","ecosystem":"Mageia:5","purl":"pkg:rpm/mageia/kernel-linus?arch=source&distro=mageia-5"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.39-1.mga5"}]}],"ecosystem_specific":{"section":"core"},"database_specific":{"source":"https://advisories.mageia.org/MGASA-2017-0003.json"}}],"schema_version":"1.7.3","credits":[{"name":"Mageia","contact":["https://wiki.mageia.org/en/Packages_Security_Team"],"type":"COORDINATOR"}]}