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Fencer Intel
critical 9.8

CVE-2020-8432 json

In Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c do_rename_gpt_parts() function.

published 6y ago modified 4mo ago also EUVD-2020-29299

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

In Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c do_rename_gpt_parts() function. Double freeing may result in a write-what-where condition, allowing an attacker to execute arbitrary code. NOTE: this vulnerablity was introduced when attempting to fix a memory leak identified by static analysis.

Patch / fix

  • u-boot Debian 14, Debian 13, Debian 12 2020.01+dfsg-2

debian advisories DEBIAN-CVE-2020-8432

  • u-boot Ubuntu 18.04 LTS 2020.10+dfsg-1ubuntu0~18.04.2
  • u-boot Ubuntu 20.04 LTS 2021.01+dfsg-3ubuntu0~20.04.3

ubuntu advisories UBUNTU-CVE-2020-8432

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • u-boot SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +1 more 2018.03-4.6.1
  • u-boot-rpi3 SLES 15-LTSS, SLE High Performance Computing 15-LTSS, SLE High Performance Computing 15-ESPOS 2018.03-4.6.2
  • u-boot SLE Module for Basesystem 15 SP1 2019.01-7.10.1
  • u-boot-rpi3 SLE Module for Basesystem 15 SP1 2019.01-7.10.2
  • u-boot SLES for SAP 12 SP5, SLES 12 SP5 2019.01-5.3.1
  • u-boot-rpi3 SLES for SAP 12 SP5, SLES 12 SP5 2019.01-5.3.1
  • u-boot SLE Module for Basesystem 15 SP2 2020.01-10.9.1
  • u-boot-rpiarm64 SLE Module for Basesystem 15 SP2 2020.01-10.9.1

suse advisories SUSE-SU-2020:3283-1SUSE-SU-2020:3282-1SUSE-SU-2020:3256-1SUSE-SU-2020:3255-1SUSE-SU-2020:3161-1

  • u-boot openSUSE Leap 15.1 2019.01-lp151.6.13.1
  • u-boot openSUSE Leap 15.2 2020.01-lp152.9.9.1

opensuse advisories openSUSE-SU-2020:1930-1openSUSE-SU-2020:1869-1

Is CVE-2020-8432 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-8432 updated cvss 8.1

uboot-tools: double free in do_rename_gpt_parts function in cmd/gpt.c

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.07% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.