Published: 27/04/2016 Updated: 03/12/2016

CVSS v2 Base Score: 5.6 | Impact Score: 7.8 | Exploitability Score: 3.9

CVSS v3 Base Score: 6.8 | Impact Score: 4.2 | Exploitability Score: 2.5

VMScore: 498

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

The (1) pipe_read and (2) pipe_write implementations in fs/pipe.c in a certain Linux kernel backport in the linux package prior to 3.2.73-2+deb7u3 on Debian wheezy and the kernel package prior to 3.10.0-229.26.2 on Red Hat Enterprise Linux (RHEL) 7.1 do not properly consider the side effects of failed __copy_to_user_inatomic and __copy_from_user_inatomic calls, which allows local users to cause a denial of service (system crash) or possibly gain privileges via a crafted application, aka an "I/O vector array overrun." NOTE: this vulnerability exists because of an incorrect fix for CVE-2015-1805.

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Synopsis Important: kernel security, bug fix, and enhancement update Type/Severity Security Advisory: Important Topic Updated kernel packages that fix multiple security issues, address severalhundred bugs, and add numerous enhancements are now available as part ofthe ongoing support and maintenance of Red H ...

Several security issues were fixed in the kernel ...

It was found that the fix for CVE-2015-1805 incorrectly kept buffer offset and buffer length in sync on a failed atomic read, potentially resulting in a pipe buffer state corruption A local, unprivileged user could use this flaw to crash the system or leak kernel memory to user space ...

CVE-2016-0774

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