Security vulnerabilities and automated fixes for undefined behavior issues
2 posts found
CVE-2021-29937 is a critical memory safety vulnerability in the Rust `telemetry` crate (versions prior to 0.1.3) that allows freeing uninitialized memory, leading to undefined behavior, potential crashes, and possible code execution. The fix involves upgrading the crate from version 0.1.0 to 0.1.3, which patches the unsafe memory handling at the root cause. Despite Rust's reputation for memory safety, this vulnerability demonstrates that `unsafe` code blocks can still introduce serious bugs that
A critical integer overflow vulnerability was discovered and patched in `rtg/mntgfx-gcc.c`, where an unvalidated bit-shift operation used to compute a graphics pattern blit copy size could trigger undefined behavior, silent data corruption, or a devastating out-of-bounds memory write. This post breaks down exactly how a single missing bounds check can turn a routine graphics operation into a serious security and stability threat, and what developers can do to prevent similar issues in their own