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THREATINT
PUBLISHED

CVE-2025-55159

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



Description

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.

Reserved 2025-08-07 | Published 2025-08-11 | Updated 2025-08-11 | Assigner GitHub_M


MEDIUM: 5.1CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

Product status

>= 0.4.10, < 0.4.11
affected

References

github.com/...s/slab/security/advisories/GHSA-qx2v-8332-m4fv

github.com/tokio-rs/slab/pull/152

github.com/...ommit/2d65c514bc964b192bab212ddf3c1fcea4ae96b8

cve.org (CVE-2025-55159)

nvd.nist.gov (CVE-2025-55159)

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