CVE-2020-12826
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2020-12826
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12826.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2020-12826
- Related
- Published
- 2020-05-12T19:15:11Z
- Modified
- 2024-09-18T01:00:20Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
- Summary
- [none]
- Details
-
A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2. Because execid in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a donotify_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.
- References
-
- https://security.netapp.com/advisory/ntap-20200608-0001/
- https://lists.openwall.net/linux-kernel/2020/03/24/1803
- https://www.openwall.com/lists/kernel-hardening/2020/03/25/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1822077
- https://github.com/torvalds/linux/commit/7395ea4e65c2a00d23185a3f63ad315756ba9cef
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
- https://usn.ubuntu.com/4367-1/
- https://usn.ubuntu.com/4369-1/
- https://usn.ubuntu.com/4391-1/
- https://security-tracker.debian.org/tracker/CVE-2020-12826
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source