Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| DENX Software Engineering | U-Boot | versions from v2020.10-rc2 to v2022.07-rc5 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | u-boot | 2022.07+dfsg-1 | — |
| Debian 13 | u-boot | 2022.07+dfsg-1 | — |
| Debian 12 | u-boot | 2022.07+dfsg-1 | — |
| Debian 11 | u-boot | 2021.01+dfsg-5+deb11u1 | DLA-4150-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | u-boot | 2022.01+dfsg-2ubuntu2.3 | USN-5764-1 |
| Ubuntu 20.04 LTS | u-boot | 2021.01+dfsg-3ubuntu0~20.04.5 | USN-5764-1 |
| Ubuntu 18.04 LTS | u-boot | 2020.10+dfsg-1ubuntu0~18.04.3 | USN-5764-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | u-boot | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | u-boot +1 | 2021.10-150400.4.8.1 | SUSE-SU-2022:2661-1 |
| SLES 15 SP3 | u-boot +1 | 2021.01-150300.7.15.1 | SUSE-SU-2022:2653-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | u-boot +41 | 2021.10-150400.4.8.1 | SUSE-SU-2022:2661-1 |
| openSUSE Leap 15.3 | u-boot +40 | 2021.01-150300.7.15.1 | SUSE-SU-2022:2653-1 |
Advisories 4
- USN-5764-1 u-boot vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-4150-1 u-boot - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2022:2661-1 Security update for u-boot SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2653-1 Security update for u-boot SUSE / openSUSE Security Updates · Feb 4, 2026