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Fencer Intel
high 7.8

CVE-2022-33967 json

squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a heap-based buffer overflow vulnerability…

published 4y ago modified 4mo ago also EUVD-2022-37003

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a heap-based buffer overflow vulnerability due to a defect in the metadata reading process. Loading a specially crafted squashfs image may lead to a denial-of-service (DoS) condition or arbitrary code execution.

Patch / fix

  • u-boot Debian 14, Debian 13, Debian 12 2022.07+dfsg-1

debian advisories DEBIAN-CVE-2022-33967

  • u-boot Ubuntu 18.04 LTS 2020.10+dfsg-1ubuntu0~18.04.3
  • u-boot Ubuntu 20.04 LTS 2021.01+dfsg-3ubuntu0~20.04.5
  • u-boot Ubuntu 22.04 LTS 2022.01+dfsg-2ubuntu2.3

ubuntu advisories UBUNTU-CVE-2022-33967

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 SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 2021.10-150400.4.8.1
  • u-boot-rpi3 openSUSE Leap 15.4 2021.10-150400.4.8.1
  • u-boot-rpi4 openSUSE Leap 15.4 2021.10-150400.4.8.1
  • u-boot-hikey openSUSE Leap 15.4 2021.10-150400.4.8.1
  • u-boot-poplar openSUSE Leap 15.4 2021.10-150400.4.8.1
  • u-boot-geekbox openSUSE Leap 15.4 2021.10-150400.4.8.1
  • u-boot-pineh64 openSUSE Leap 15.4 2021.10-150400.4.8.1
  • u-boot-pinebook openSUSE Leap 15.4 2021.10-150400.4.8.1

suse advisories SUSE-SU-2022:2661-1SUSE-SU-2022:2653-1

Is CVE-2022-33967 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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Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • lists.denx.de https://lists.denx.de/pipermail/u-boot/2022-June/487467.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • DENX Software Engineering U-Boot

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.