VDB

CVE-2020-12826

CVE-2020-12826 PUBLISHED

Reported by mitre · Published May 12, 2020

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.

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

PackageEcosystemFixed in
kernel-tools-develAmazon Linux4.14.177-139.253.amzn2
perfAmazon Linux4.14.177-139.253.amzn2
kernel-develAmazon Linux4.14.177-139.253.amzn2
kernel-toolsAmazon Linux4.14.177-139.253.amzn2
linux-gke-5.0Ubuntu:18.04:LTS5.0.0-1037.38
linux-azure-4.15Ubuntu:18.04:LTS4.15.0-1083.93
linux-aws-hweUbuntu:16.04:LTS4.15.0-1067.71~16.04.1
linux-awsUbuntu:Pro:14.04:LTS4.4.0-1073.77
linux-azureUbuntu:20.04:LTS5.4.0-1012.12
linux-aws-fipsUbuntu:Pro:FIPS-updates:18.04:LTS4.15.0-2018.18
linux-azure-5.3Ubuntu:18.04:LTS5.3.0-1022.23~18.04.1
linux-fipsUbuntu:Pro:FIPS-updates:18.04:LTS4.15.0-1029.34

7 more packages have a fixed version. See every fix in Lookup.

Affected products

VendorProductVersions
n/an/an/a
n/an/a*

Timeline

  • May 12, 2020 CVE Published
  • Apr 14, 2021 EPSS Score (30 in total, the first dated here)
  • Nov 21, 2024 CVE Updated
  • Mar 6, 2026 Distribution Patch (11 in total, the first dated here)
  • Mar 6, 2026 Security Advisory (12 in total, the first dated here)
  • Sep 5, 2026 Coalition ESS Score

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vulnetix vdb fixes CVE-2020-12826

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  "https://api.vdb.vulnetix.com/v2/vuln/CVE-2020-12826/fixes/registry"

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References

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