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CVE-2024-42040

Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 ...

8.1 HighFix available

Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 (3861aa5) up to today on any platform allows an attacker on the local network to leak memory from four up to 32 bytes of memory stored behind the packet to the network depending on the later use of DHCP-provided parameters via crafted DHCP responses.

Attack profile

How easy it is to exploit

Attack vector
Adjacent network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
High

Exploit likelihood

0.60%Up 0.6 points since Aug 24, 2024
90%50%10%1%

What each source reports

CVE List Score used 8.1

Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 (3861aa5) up to today on any platform allows an attacker on the local network to leak memory from four up to 32 bytes of memory stored behind the packet to the network depending on the later use of DHCP-provided parameters via crafted DHCP responses.

Record
CVE-2024-42040
CVSS 3.1
8.1 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness
CWE-120
Updated
2026-11-02
EUVDEUVD-2024-39870 8.1

Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 (3861aa5) up to today on any platform allows an attacker on the local network to leak memory from four up to 32 bytes of memory stored behind the packet to the network depending on the later use of DHCP-provided parameters via crafted DHCP responses.

Record
EUVD-2024-39870
CVSS 3.1
8.1 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-xh96-vq46-m9ww 8.1

Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 ...

Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 (3861aa5) up to today on any platform allows an attacker on the local network to leak memory from four up to 32 bytes of memory stored behind the packet to the network depending on the later use of DHCP-provided parameters via crafted DHCP responses.

Record
GHSA-xh96-vq46-m9ww
CVSS 3.1
8.1 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness
CWE-120
Updated
2026-11-02
NVD 8.1

Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 (3861aa5) up to today on any platform allows an attacker on the local network to leak memory from four up to 32 bytes of memory stored behind the packet to the network depending on the later use of DHCP-provided parameters via crafted DHCP responses.

Record
CVE-2024-42040
CVSS 3.1
8.1 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness
CWE-120
Updated
2026-11-02
OSV 8.1

Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 (3861aa5) up to today on any platform allows an attacker on the local network to leak memory from four up to 32 bytes of memory stored behind the packet to the network depending on the later use of DHCP-provided parameters via crafted DHCP responses.

Record
CVE-2024-42040
CVSS 3.1
8.1 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2024-42040 8.1

Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 (3861aa5) up to today on any platform allows an attacker on the local network to leak memory from four up to 32 bytes of memory stored behind the packet to the network depending on the later use of DHCP-provided parameters via crafted DHCP responses.

Record
DEBIAN-CVE-2024-42040
CVSS 3.1
8.1 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated
2026-11-02
OSVOESA-2026-1971 8.1

uboot-tools security update

This package includes the mkimage program, which allows generation of U-Boot images in various formats, and the fw_printenv and fw_setenv programs to read and modify U-Boot's environment.

Security Fix(es):

Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 (3861aa5) up to today on any platform allows an attacker on the local network to leak memory from four up to 32 bytes of memory stored behind the packet to the network depending on the later use of DHCP-provided parameters via crafted DHCP responses.(CVE-2024-42040)

Record
OESA-2026-1971
CVSS 3.1
8.1 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2024-42040 8.1

Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 (3861aa5) up to today on any platform allows an attacker on the local network to leak memory from four up to 32 bytes of memory stored behind the packet to the network depending on the later use of DHCP-provided parameters via crafted DHCP responses.

Record
UBUNTU-CVE-2024-42040
CVSS 3.1
8.1 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
u-boot
Debian:12
before 2023.01+dfsg-2+deb12u3, plus listed versions
2023.01+dfsg-22023.01+dfsg-2+deb12u12023.01+dfsg-2+deb12u2
2023.01+dfsg-2+deb12u3
u-boot
Debian:13
before 2025.01-3+deb13u1, plus listed versions
2025.01-3
2025.01-3+deb13u1
u-boot
Debian:14
before 2025.01-3.2, plus listed versions
2025.01-32025.01-3.1
2025.01-3.2
uboot-tools
openEuler:22.03-LTS-SP4
before 2021.10-12.oe2203sp4
2021.10-12.oe2203sp4
uboot-tools
openEuler:24.03-LTS
before 2024.01-4.oe2403sp3
2024.01-4.oe2403sp3
uboot-tools
openEuler:24.03-LTS-SP1
before 2024.01-4.oe2403sp1
2024.01-4.oe2403sp1
uboot-tools
openEuler:24.03-LTS-SP2
before 2024.01-4.oe2403sp2
2024.01-4.oe2403sp2
uboot-tools
openEuler:24.03-LTS-SP3
before 2024.01-4.oe2403sp3
2024.01-4.oe2403sp3
uboot-tools
openEuler:20.03-LTS-SP4
before 2020.07-11.oe2003sp4
2020.07-11.oe2003sp4
u-boot
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
2015.04+dfsg1-2ubuntu12015.10+dfsg1-22015.10+dfsg1-32015.10+dfsg1-42016.01+dfsg1-1
Show 7 moreShow less
2016.01+dfsg1-1ubuntu12016.01+dfsg1-2ubuntu12016.01+dfsg1-2ubuntu22016.01+dfsg1-2ubuntu32016.01+dfsg1-2ubuntu52016.01+dfsg1-2ubuntu5+esm12016.01+dfsg1-2ubuntu5+esm2
None known
Show 9 moreShow less
Affected packages
PackageAffectedFixed
u-boot
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
2016.03+dfsg1-6ubuntu22018.07~rc3+dfsg1-0ubuntu1~18.04.12018.07~rc3+dfsg1-0ubuntu2~18.04.12018.07~rc3+dfsg1-0ubuntu3~18.04.12019.07+dfsg-1ubuntu4~18.04.1
Show 4 moreShow less
2020.10+dfsg-1ubuntu0~18.04.22020.10+dfsg-1ubuntu0~18.04.32020.10+dfsg-1ubuntu0~18.04.3+esm12020.10+dfsg-1ubuntu0~18.04.3+esm2
None known
u-boot
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
2019.07+dfsg-1ubuntu32019.07+dfsg-1ubuntu52019.07+dfsg-1ubuntu62020.10+dfsg-1ubuntu0~20.04.22021.01+dfsg-3ubuntu0~20.04.1
Show 6 moreShow less
2021.01+dfsg-3ubuntu0~20.04.32021.01+dfsg-3ubuntu0~20.04.42021.01+dfsg-3ubuntu0~20.04.52021.01+dfsg-3ubuntu0~20.04.62021.01+dfsg-3ubuntu0~20.04.6+esm12021.01+dfsg-3ubuntu0~20.04.6+esm2
None known
u-boot
Ubuntu:22.04:LTS
All versions, plus listed versions
2021.07+dfsg-0ubuntu82021.07+dfsg-0ubuntu92021.07+dfsg-0ubuntu102022.01+dfsg-2ubuntu12022.01+dfsg-2ubuntu2
Show 8 moreShow less
2022.01+dfsg-2ubuntu2.12022.01+dfsg-2ubuntu2.32022.01+dfsg-2ubuntu2.42022.01+dfsg-2ubuntu2.52022.01+dfsg-2ubuntu2.62022.01+dfsg-2ubuntu2.72022.01+dfsg-2ubuntu2.82022.01+dfsg-2ubuntu2.9
None known
u-boot-nezha
Ubuntu:22.04:LTS
All versions, plus listed versions
2021.09+git20211008.62392d3-0ubuntu12022.04+git20220405.7446a472-0ubuntu0.12022.04+git20220405.7446a472-0ubuntu0.22022.04+git20220405.7446a472-0ubuntu0.32022.04+git20220405.7446a472-0ubuntu0.4
None known
u-boot
Ubuntu:24.04:LTS
All versions, plus listed versions
2023.07+dfsg-1ubuntu22024.01+dfsg-1ubuntu12024.01+dfsg-1ubuntu22024.01+dfsg-1ubuntu32024.01+dfsg-1ubuntu4
Show 9 moreShow less
2024.01+dfsg-1ubuntu52024.01+dfsg-1ubuntu5.12024.01+dfsg-1ubuntu5.22025.01-0ubuntu0.24.04.12025.01-0ubuntu0.24.04.22025.10-0ubuntu0.24.04.12025.10-0ubuntu0.24.04.22025.10-0ubuntu0.24.04.32025.10-0ubuntu0.24.04.4
None known
u-boot-nezha
Ubuntu:24.04:LTS
All versions, plus listed versions
2022.10-1089-g528ae9bc6c-0ubuntu22024.01~rc1-190-g2e89b706f5-0ubuntu12024.01~rc1-190-g2e89b706f5-0ubuntu22024.01~rc1-190-g2e89b706f5-0ubuntu2.24.04.2
None known
u-boot
Ubuntu:25.10
All versions, plus listed versions
2025.01-1~0ubuntu22025.01-3ubuntu12025.01-3ubuntu22025.01-3ubuntu42025.10-0ubuntu0.25.10.1
None known
u-boot
Ubuntu:26.10
All versions, plus listed versions
2025.10-0ubuntu22025.10-0ubuntu32025.10-0ubuntu42025.10-0ubuntu52025.10-0ubuntu6
None known
u-boot
Ubuntu:26.04:LTS
All versions, plus listed versions
2025.01-3ubuntu42025.10-0ubuntu12025.10-0ubuntu22025.10-0ubuntu2.12025.10-0ubuntu2.2
None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-42040 is a high vulnerability (CVSS 8.1) in Denx U-boot, published August 23, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.60%, the 48th percentile. Fixed in u-boot 2023.01+dfsg-2+deb12u3.

References

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