CVE-2019-13104 — In Das U-Boot versions 2016

In Das U-Boot versions 2016.11-rc1 through 2019.07-rc4, an underflow can cause memcpy() to overwrite a very large amount of data (including the whole stack) while reading a crafted ext4 filesystem.

01What is this vulnerability?

In Das U-Boot versions 2016.11-rc1 through 2019.07-rc4, an underflow can cause memcpy() to overwrite a very large amount of data (including the whole stack) while reading a crafted ext4 filesystem.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-08-06T19:15:13.253
• Last modified: 2026-05-12T10:16:34.007

09References

• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00002.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00004.html
• gist.github.com — https://gist.github.com/deephooloovoo/d91b81a1674b4750e662dfae93804d75
• github.com — https://github.com/u-boot/u-boot/commits/master
• lists.denx.de — https://lists.denx.de/pipermail/u-boot/2019-July/375514.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00002.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00004.html
• gist.github.com — https://gist.github.com/deephooloovoo/d91b81a1674b4750e662dfae93804d75
• github.com — https://github.com/u-boot/u-boot/commits/master
• lists.denx.de — https://lists.denx.de/pipermail/u-boot/2019-July/375514.html