PoC Index

CVE-2020-12826

MEDIUM 5.3EPSS 0.7%

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.

CVSS v3.1
5.3 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS v2.0
4.4 MEDIUMAV:L/AC:M/Au:N/C:P/I:P/A:P
EPSS
0.71% chance of exploitation in the next 30 days, 51th percentile
Published
2020-05-12
Updated
2024-08-04

Proof-of-concept exploits (2)

References

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