{"id":"GHSA-xw5j-gv2g-mjm2","aliases":["RUSTSEC-2023-0014"],"url":"https://o3.security/vulnerability/GHSA-xw5j-gv2g-mjm2","summary":"Miscompilation in cortex-m-rt 0.7.1 and 0.7.2","details":"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.\n\nThis 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].\n\n**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.\n\nIt will be necessary to rebuild all affected firmware binaries, and flash or deploy the new firmware binaries to affected devices.\n\n[stack ABI of AAPCS32]: https://github.com/ARM-software/abi-aa/blob/edd7460d87493fff124b8b5713acf71ffc06ee91/aapcs32/aapcs32.rst#6212stack-constraints-at-a-public-interface\n[observed in real-world applications]: https://github.com/peter9477/test2\n","published":"2023-02-14T21:53:37Z","modified":"2023-11-08T04:24:34.246767Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"cortex-m-rt","fixedVersion":"0.7.3"}],"fix":null,"references":[{"type":"PACKAGE","url":"https://github.com/rust-embedded/cortex-m"},{"type":"WEB","url":"https://github.com/rust-embedded/cortex-m/discussions/469"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2023-0014.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2023-11-08T04:24:34.246767Z"}}