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CentOS Update for kernel CESA-2017:3200 centos6

Information

Severity

Severity

High

Family

Family

CentOS Local Security Checks

CVSSv2 Base

CVSSv2 Base

7.2

CVSSv2 Vector

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

4 years ago

Modified

Modified

3 years ago

Summary

Check the version of kernel

Insight

Insight

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * 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 (requires the CAP_NET_RAW capability) could use this flaw to elevate their privileges on the system. (CVE-2017-1000111, Important) * 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. (CVE-2017-1000112, Important) * 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. (CVE-2017-14106, Moderate) Red Hat would like to thank Willem de Bruijn for reporting CVE-2017-1000111 and Andrey Konovalov for reporting CVE-2017-1000112. Bug Fix(es): * When the operating system was booted with Red Hat Enterprise Virtualization, and the eh_deadline sysfs parameter was set to 10s, the Storage Area Network (SAN) issues caused eh_deadline to trigger with no handler. Consequently, a kernel panic occurred. This update fixes the lpfc driver, thus preventing the kernel panic under described circumstances. (BZ#1487220) * When an NFS server returned the NFS4ERR_BAD_SEQID error to an OPEN request, the open-owner was removed from the state_owners rbtree. Consequently, NFS4 client infinite loop that required a reboot to recover occurred. This update changes NFS4ERR_BAD_SEQID handling to leave the open-owner in the state_owners rbtree by updating the create_time parameter so that it looks like a new open-owner. As a result, an NFS4 client is now able to recover without falling into the infinite recovery loop after receiving NFS4ERR_BAD_SEQID. (BZ#1491123) * If an NFS client attempted to mount NFSv3 shares from an NFS server exported directly to the client's IP address, and this NFS client had already mounted other shares that originated from the same server but were exported to the subnetwork which this client was part of, the auth.unix.ip cache expiration was not handled correctly. Consequently, the client received the 'stale file handle' errors when trying to mount the share. This update fixes handling of the cache expiration, and the NFSv3 shares now mount as expected without producing the 'stale file handle' errors. (BZ#1497 ... Description truncated, please see the referenced URL(s) for more information.

Affected Software

Affected Software

kernel on CentOS 6

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Please Install the Updated Packages.

Common Vulnerabilities and Exposures (CVE)

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Citations 1. Costs and Consequences of Gaps in Vulnerability Response, Ponemom Institute 2. Cost of a Data Breach Report 2021, IBM

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