[LU-9561] kernel update [RHEL7.3 3.10.0-514.21.1.el7]

Related — Mon, 19 Jun 2017 19:55:31 +0000

Security Fix(es):

It was found that the packet_set_ring() function of the Linux kernel's
networking implementation did not properly validate certain block-size data. A
local attacker with CAP_NET_RAW capability could use this flaw to trigger a
buffer overflow, resulting in the crash of the system. Due to the nature of the
flaw, privilege escalation cannot be fully ruled out. (CVE-2017-7308, Important)

Mounting a crafted EXT4 image read-only leads to an attacker controlled memory
corruption and SLAB-Out-of-Bounds reads. (CVE-2016-10208, Moderate)

A flaw was found in the Linux kernel's implementation of seq_file where a
local attacker could manipulate memory in the put() function pointer. This could
lead to memory corruption and possible privileged escalation. (CVE-2016-7910,
Moderate)

A vulnerability was found in the Linux kernel. An unprivileged local user
could trigger oops in shash_async_export() by attempting to force the in-kernel
hashing algorithms into decrypting an empty data set. (CVE-2016-8646, Moderate)

It was reported that with Linux kernel, earlier than version v4.10-rc8, an
application may trigger a BUG_ON in sctp_wait_for_sndbuf if the socket tx buffer
is full, a thread is waiting on it to queue more data, and meanwhile another
thread peels off the association being used by the first thread. (CVE-2017-5986,
Moderate)

Additional Changes:

https://access.redhat.com/articles/3034221

Bugs fixed (https://bugzilla.redhat.com/):

1388821 - CVE-2016-8646 kernel: Oops in shash_async_export()
1395190 - CVE-2016-10208 kernel: EXT4 memory corruption / SLAB out-of-bounds read
1399727 - CVE-2016-7910 kernel: Use after free in seq file
1420276 - CVE-2017-5986 kernel: Reachable BUG_ON from userspace in sctp_wait_for_sndbuf
1437404 - CVE-2017-7308 kernel: net/packet: overflow in check for priv area size

Whamcloud Community JIRA

[LU-9561] kernel update [RHEL7.3 3.10.0-514.21.1.el7]