GHSA-xw5j-gv2g-mjm2 – cortex-m-rt

Package

Manager: cargo
Name: cortex-m-rt
Vulnerable Version: >=0.7.0 <0.7.3

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:R

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS: N/A pctlN/A

Details

Miscompilation in cortex-m-rt 0.7.1 and 0.7.2 Version 0.7.1 of the `cortex-m-rt` crate introduced a regression causing the stack to NOT be eight-byte aligned prior to calling `main` (or any other specified entrypoint), violating the [stack ABI of AAPCS32], the default ABI used by all Cortex-M targets. This regression is also present in version 0.7.2 of the `cortex-m-rt` crate. This regression can cause certain compiler optimizations (which assume the eight-byte alignment) to produce incorrect behavior at runtime. This incorrect behavior has been [observed in real-world applications]. **It is advised that ALL users of `v0.7.1` and `v0.7.2` of the `cortex-m-rt` crate update to the latest version (`v0.7.3`), AS SOON AS POSSIBLE.** Users of `v0.7.0` and prior versions of `cortex-m-rt` are not affected by this regression. It will be necessary to rebuild all affected firmware binaries, and flash or deploy the new firmware binaries to affected devices. [stack ABI of AAPCS32]: https://github.com/ARM-software/abi-aa/blob/edd7460d87493fff124b8b5713acf71ffc06ee91/aapcs32/aapcs32.rst#6212stack-constraints-at-a-public-interface [observed in real-world applications]: https://github.com/peter9477/test2

Metadata

Created: 2023-02-14T21:53:37Z
Modified: 2023-02-14T21:53:37Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/02/GHSA-xw5j-gv2g-mjm2/GHSA-xw5j-gv2g-mjm2.json
CWE IDs: []
Alternative ID: N/A
Finding: F138
Auto approve: 1