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OVAL

RHSA-2017:2930-01 -- Redhat kernel, python-perf, perf

ID: oval:org.secpod.oval:def:502159Date: (C)2017-10-25   (M)2024-02-19
Class: PATCHFamily: unix




The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: * Out-of-bounds kernel heap access vulnerability was found in xfrm, kernel"s IP framework for transforming packets. An error dealing with netlink messages from an unprivileged user leads to arbitrary read/write and privilege escalation. * A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets are implemented in the Linux kernel networking subsystem handling synchronization. A local user able to open a raw packet socket could use this flaw to elevate their privileges on the system. * An exploitable memory corruption flaw was found in the Linux kernel. The append path can be erroneously switched from UFO to non-UFO in ip_ufo_append_data when building an UFO packet with MSG_MORE option. If unprivileged user namespaces are available, this flaw can be exploited to gain root privileges. * A flaw was found in the Linux networking subsystem where a local attacker with CAP_NET_ADMIN capabilities could cause an out-of-bounds memory access by creating a smaller-than-expected ICMP header and sending to its destination via sendto. * Kernel memory corruption due to a buffer overflow was found in brcmf_cfg80211_mgmt_tx function in Linux kernels from v3.9-rc1 to v4.13-rc1. The vulnerability can be triggered by sending a crafted NL80211_CMD_FRAME packet via netlink. This flaw is unlikely to be triggered remotely as certain userspace code is needed for this. An unprivileged local user could use this flaw to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is unlikely. * An integer overflow vulnerability in ip6_find_1stfragopt function was found. A local attacker that has privileges to open raw socket can cause an infinite loop inside the ip6_find_1stfragopt function. * A kernel data leak due to an out-of-bound read was found in the Linux kernel in inet_diag_msg_sctp{,l}addr_fill and sctp_get_sctp_info functions present since version 4.7-rc1 through version 4.13. A data leak happens when these functions fill in sockaddr data structures used to export socket"s diagnostic information. As a result, up to 100 bytes of the slab data could be leaked to a userspace. * The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to possibly cause a situation where a value may be used after being freed which may lead to memory corruption or other unspecified other impact. * A divide-by-zero vulnerability was found in the __tcp_select_window function in the Linux kernel. This can result in a kernel panic causing a local denial of service. Red Hat would like to thank Chaitin Security Research Lab for reporting CVE-2017-7184; Willem de Bruijn for reporting CVE-2017-1000111; and Andrey Konovalov for reporting CVE-2017-1000112. The CVE-2017-7558 issue was discovered by Stefano Brivio . Space precludes documenting all of the bug fixes and enhancements included in this advisory. To see the complete list of bug fixes and enhancements, refer to the following KnowledgeBase article: https://access.redhat.com/node/3212921.

Platform:
Red Hat Enterprise Linux 7
Product:
kernel
python-perf
perf
Reference:
RHSA-2017:2930-01
CVE-2016-8399
CVE-2017-1000111
CVE-2017-1000112
CVE-2017-11176
CVE-2017-14106
CVE-2017-7184
CVE-2017-7541
CVE-2017-7542
CVE-2017-7558
CVE    9
CVE-2016-8399
CVE-2017-7184
CVE-2017-7542
CVE-2017-7541
...
CPE    114
cpe:/o:linux:linux_kernel:4.12.14
cpe:/o:linux:linux_kernel:4.9.18
cpe:/o:linux:linux_kernel:4.9.19
cpe:/o:linux:linux_kernel:4.9.16
...

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