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RUSTSEC-2026-0204: Invalid pointer dereference in fmt::Pointer impl for Atomic and Shared when the underlying pointer is invalid #249
Description
Invalid pointer dereference in
fmt::Pointerimpl forAtomicandSharedwhen the underlying pointer is invalid
| Details | |
|---|---|
| Package | crossbeam-epoch |
| Version | 0.9.18 |
| URL | crossbeam-rs/crossbeam#1276 |
| Date | 2026-07-06 |
| Patched versions | >=0.9.20 |
| Unaffected versions | <0.9.0 |
Affected versions of fmt::Display dereference the underlying pointer. This causes a invalid pointer dereference e.g., when a pointer created with Atomic::null or Shared::null. fmt::Debug impls and pre-0.9 fmt::Display impls, which do not dereference pointers, are not affected by this issue.
See advisory page for additional details.
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