FKIE_CVE-2020-12826

Vulnerability from fkie_nvd - Published: 2020-05-12 19:15 - Updated: 2024-11-21 05:00
Severity ?
5.3 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Summary
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.
References
cve@mitre.orghttps://bugzilla.redhat.com/show_bug.cgi?id=1822077Issue Tracking, Patch, Third Party Advisory
cve@mitre.orghttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5Release Notes, Third Party Advisory
cve@mitre.orghttps://github.com/torvalds/linux/commit/7395ea4e65c2a00d23185a3f63ad315756ba9cefPatch, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
cve@mitre.orghttps://lists.openwall.net/linux-kernel/2020/03/24/1803Exploit, Mailing List, Patch, Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20200608-0001/
cve@mitre.orghttps://usn.ubuntu.com/4367-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/4369-1/
cve@mitre.orghttps://usn.ubuntu.com/4391-1/
cve@mitre.orghttps://www.openwall.com/lists/kernel-hardening/2020/03/25/1Exploit, Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1822077Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/7395ea4e65c2a00d23185a3f63ad315756ba9cefPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
af854a3a-2127-422b-91ae-364da2661108https://lists.openwall.net/linux-kernel/2020/03/24/1803Exploit, Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20200608-0001/
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4367-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4369-1/
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4391-1/
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/kernel-hardening/2020/03/25/1Exploit, Mailing List, Patch, Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
canonical ubuntu_linux 20.04
redhat enterprise_linux 5.0
redhat enterprise_linux 6.0
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_mrg 2.0
To clipboard 

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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.