7

CVE-2020-29368: linux linux_kernel

Modified
AliasesSUSE-SU-2021:0864-1UBUNTU-CVE-2020-29368DEBIAN-CVE-2020-29368
Published 28-11-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-29368 is a high (CVSS 7.0) vulnerability in linux linux_kernel. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 30.3% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (reference, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
7.0/10
010
High · v3.1 (NVD)
EPSS score
0.36%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 36 · Related 30
OPENSUSE-SU-2021:0393-1RHSA-2021:4140RHSA-2021:4356RHSA-2022:5220RHSA-2022:5224RHSA-2022:5626

Timeline

  1. 28-11-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

30%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.36% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.chromium.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu45 products
  • linux< 4.15.0-115.116 | < 5.4.0-45.49
  • linux-aws< 4.15.0-1080.84 | < 5.4.0-1022.22
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.3All versions (No fix recorded)
  • linux-aws-5.4< 5.4.0-1022.22~18.04.1
Netapp6 products
Suse3 products
  • kernel-livepatch-SLE15_Update_22&distro=SUSE Linux Enterprise Live Patching 15< 2-2.2
  • kernel-livepatch-SLE15-SP1_Update_22&distro=SUSE Linux Enterprise Live Patching 15 SP1< 2-2.2
  • kgraft-patch-SLE12-SP4_Update_18&distro=SUSE Linux Enterprise Live Patching 12 SP4< 2-2.2
Debian1 product
  • linux< 5.7.6-1
Linux1 product
  • linux_kernel≥ 4.5.5, < 4.9.228 | ≥ 4.10, < 4.14.185 | ≥ 4.15, < 4.19.129 | ≥ 4.20, < 5.4.48 | ≥ 5.5, < 5.7.5

5 vendors · 56 products

References

13 links
Show all 13 references