CVE-2019-13104: denx u-boot Integer Underflow (Wrap or Wraparound)
Modified
AliasesUBUNTU-CVE-2019-13104DEBIAN-CVE-2019-13104
Published 06-08-2019Last modified 12-05-2026
Vulnerability summary
CVE-2019-13104 is a high (CVSS 7.8) Integer Underflow (Wrap or Wraparound) vulnerability in denx u-boot. EPSS estimates a 1.12% chance of exploitation in the next 30 days, higher than 65.8% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
1.12%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 5 · Related 5Timeline
- 06-08-2019PublishedVulnerability first disclosed.
- 12-05-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 3 sources · 3 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
High 7.8Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesSingle source
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.12%
Chance of exploitation in the next 30 days
Percentile
66%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 1.11% on 22-09-2026
22-09-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-191Integer Underflow (Wrap or Wraparound)The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Debian1 product
- u-boot< 2020.01+dfsg-1
Denx1 product
- u-boot≥ 2016.09, ≤ 2019.04 | 2019.07 | 2019.07:rc1 | 2019.07:rc2 | 2019.07:rc3 | 2019.07:rc4
Opensuse1 product
- leapEOL15.0 | 15.1
Ubuntu1 product
- u-boot< 2020.10+dfsg-1ubuntu0~18.04.2 | < 2021.01+dfsg-3ubuntu0~20.04.3
4 vendors · 4 products
References
9 links- lists.denx.de/pipermail/u-boot/2019-July/375514.htmlX Refsource MISCMailing ListPatchVendor AdvisoryREPORT
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00002.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00004.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
