Description
Trusted Firmware-A through 2.8 has an out-of-bounds read in the X.509 parser for parsing boot certificates. This affects downstream use of get_ext and auth_nvctr. Attackers might be able to trigger dangerous read side effects or obtain sensitive information about microarchitectural state.
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 | arm-trusted-firmware | 2.9.0+dfsg-3 | — |
| Debian 13 | arm-trusted-firmware | 2.9.0+dfsg-3 | — |
| Debian 12 | arm-trusted-firmware | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | arm-trusted-firmware | No fix yet | — |
| Ubuntu 26.04 LTS | arm-trusted-firmware | No fix yet | — |
| Ubuntu 25.10 | arm-trusted-firmware | No fix yet | — |
| Ubuntu 24.04 LTS | arm-trusted-firmware | No fix yet | — |
| Ubuntu 22.04 LTS | arm-trusted-firmware | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | arm-trusted-firmware | No fix yet | — |