vulnerability
Red Hat: CVE-2017-18344: Important: kernel-alt security, bug fix, and enhancement update (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:P/I:N/A:N) | 2018-07-26 | 2018-10-31 | 2021-03-03 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
2018-07-26
Added
2018-10-31
Modified
2021-03-03
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)
redhat-upgrade-kernelredhat-upgrade-kernel-rt
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