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CVE-2025-55159RUSTSEC-2025-0047GHSA-QX2V-8332-M4FV

slab allows out-of-bounds access in `get_disjoint_mut` due to incorrect bounds check

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 0.4.11
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

slab is a pre-allocated storage for a uniform data type. In version 0.4.10, the get_disjoint_mut method incorrectly checked if indices were within the slab's capacity instead of its length, allowing access to uninitialized memory. This could lead to undefined behavior or potential crashes. This has been fixed in slab 0.4.11. A workaround for this issue involves to avoid using get_disjoint_mut with indices that might be beyond the slab's actual length.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • tokio-rs slab

    From 0.4.10 · fixed in 0.4.11

  • slabcrates.io

    From 0.4.10 · fixed in 0.4.11

  • slabcrates.io

    From 0.4.10 · fixed in 0.4.11

References 3

GitHub · tokio-rs/slab