vulnerability
Red Hat: CVE-2020-12826: possible to send arbitrary signals to a privileged (suidroot) parent process (Multiple Advisories)
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
4 | (AV:L/AC:L/Au:S/C:P/I:P/A:P) | 2020-05-12 | 2020-10-01 | 2025-01-28 |
Severity
4
CVSS
(AV:L/AC:L/Au:S/C:P/I:P/A:P)
Published
2020-05-12
Added
2020-10-01
Modified
2025-01-28
Description
A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2. Because exec_id in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a do_notify_parent protection mechanism. A child process can send an arbitrary signal to a parent process in a different security domain. Exploitation limitations include the amount of elapsed time before an integer overflow occurs, and the lack of scenarios where signals to a parent process present a substantial operational threat.
Solution(s)
redhat-upgrade-kernelredhat-upgrade-kernel-rt

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