Description
Certain function pointers in Trusted Boot (tboot) through 1.9.6 are not validated and can cause arbitrary code execution, which allows local users to overwrite dynamic PCRs of Trusted Platform Module (TPM) by hooking these function pointers.
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | tboot | 1.9.7-0ubuntu1 | — |
| Ubuntu 18.04 LTS | tboot | No fix yet | — |
| Ubuntu 16.04 LTS | tboot | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | tboot | 20160518_1.9.4-7.5.1 | SUSE-SU-2017:3090-1 |
| SLES 12 SP2 | tboot | 20160518_1.9.4-7.5.1 | SUSE-SU-2017:3090-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | tboot | 20160518_1.9.4-7.5.1 | SUSE-SU-2017:3090-1 |
| SLES for SAP 12 SP2 | tboot | 20160518_1.9.4-7.5.1 | SUSE-SU-2017:3090-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tboot | 20210614_1.10.2-2.2 | openSUSE-SU-2024:11424-1 |
Advisories 2
- openSUSE-SU-2024:11424-1 tboot-20210614_1.10.2-2.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3090-1 Recommended update for tboot SUSE / openSUSE Security Updates · Feb 4, 2026