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F5 Networks: K07020416: Linux kernel vulnerability CVE-2017-18344

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F5 Networks: K07020416: Linux kernel vulnerability CVE-2017-18344

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
07/26/2018
Created
12/10/2020
Added
12/08/2020
Modified
02/18/2022

Description

The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).

Solution(s)

  • f5-big-ip-upgrade-latest

References

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