fast-fault has a segmentation fault due to lack of bound check
Exploitation and risk
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osv · GHSA-8655-xgh5-5vvq
PublishedIn this case, the "fast_float::common::AsciiStr::first" method within the "AsciiStr" struct uses the unsafe keyword to reading from memory without performing bounds checking. Specifically, it directly dereferences a pointer offset by "self.ptr". Because of the above reason, the method accesses invalid memory address when it takes an empty string as its input. This approach violates Rust’s memory safety guarantees, as it can lead to invalid memory access if empty buffer is provided. No patched version for fast-float crate has been released, but a patch is available in the fast-float2 fork.
- Source published
- 29 Jan 2025 22:21:17 UTC
- Source modified
- 10 Sep 2026 03:50:56 UTC
- Saved here
- 24 Oct 2026 13:19:54 UTC
- Source terms
- GitHub Advisory Database · CC-BY-4.0
Original source record · Cite this exact observation · Complete original publisher JSON
Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
Publisher rating · MODERATE
osv · RUSTSEC-2025-0003
PublishedIn this case, the "fast_float::common::AsciiStr::first" method within the "AsciiStr" struct uses the unsafe keyword to reading from memory without performing bounds checking. Specifically, it directly dereferences a pointer offset by "self.ptr". Because of the above reason, the method accesses invalid memory address when it takes an empty string as its input. This approach violates Rust’s memory safety guarantees, as it can lead to invalid memory access if empty buffer is provided. No patched version for fast-float crate has been released, but a patch is available in the fast-float2 fork.
- Source published
- 13 Jan 2025 12:00:00 UTC
- Source modified
- 28 Oct 2025 06:29:23 UTC
- Saved here
- 24 Oct 2026 13:19:54 UTC
- Source terms
- OSV · upstream source license applies
Original source record · Cite this exact observation · Complete original publisher JSON
Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.