7.8

CVE-2020-29534: linux linux_kernel

Modified
AliasesUBUNTU-CVE-2020-29534DEBIAN-CVE-2020-29534
Published 03-12-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-29534 is a high (CVSS 7.8) vulnerability in linux linux_kernel. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 39.8% 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
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.46%
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 3 · Related 1
MGASA-2021-0030MGASA-2021-0031USN-4678-1

Timeline

  1. 03-12-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request, causing execve() to incorrectly optimize unshare_fd(), aka CID-0f2122045b94.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.46% 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

No weakness data has been published for this record.

Affected systems

Version check

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

Ubuntu17 products
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.3All versions (No fix recorded)
  • linux-azureAll versions (No fix recorded)
  • linux-azure-5.3All versions (No fix recorded)
  • linux-azure-edgeAll versions (No fix recorded)
Debian1 product
  • linux< 5.9.6-1
Linux1 product
  • linux_kernel≥ 5.1, < 5.8.18 | ≥ 5.9.0, < 5.9.3 | 5.10:rc1

3 vendors · 19 products

References

9 links