High, CVSS 8.1crates.ioPublished
crossbeam-utils Unsoundness of AtomicCell arithmetics on 32-bit targets that support Atomic{I,U}64
CVE-2022-23639 · GHSA-qc84-gqf4-9926
- Affected
- crates.io crossbeam-utils < 0.8.7
- Fixed in
- 0.8.7· Vendor fix available
- Issue
- Impact The affected versions of this crate incorrectly assumed that the alignment of {i,u}64 was always the same as Atomic{I,U}64. However, the alignment of {i,u}64 on a 32-bit target can be smaller than Atomic{I,U}64. This can cause the following problems: - Unaligned memory accesses - Data race Crates using fetch methods with AtomicCell<{i,u}64 are affected by this issue. 32-bit targets without Atomic{I,U}64 and 64-bit targets are not affected by this issue. 32-bit targets with Atomic{I,U}64 and {i,u}64 have the same alignment are also not affected by this issue. The following is a complete list of the builtin targets that may be affected. (last update: nightly-2022-02-11) - armv7-apple-ios (tier 3) - armv7s-apple-ios (tier 3) - i386-apple-ios (tier 3) - i586-unknown-linux-gnu - i586-unknown-linux-musl - i686-apple-darwin (tier 3) - i686-linux-android - i686-unknown-freebsd - i686-unknown-haiku (tier 3) - i686-unknown-linux-gnu - i686-unknown-linux-musl - i686-unknown-netbsd (tier…
Recommended action: Upgrade to 0.8.7 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.