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🛡️ GHSA-3632-54q8-m96x — arenavec

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-122 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

arenavec has multiple memory corruption vulnerabilities in safe APIs

The crate has the following vulnerabilities:

  • The public trait arenavec::common::AllocHandle allows the return of raw pointers through its methods allocate and allocate_or_extend. However, the trait is not marked as unsafe, meaning users of the crate may implement it under the assumption that the library safely handles the returned raw pointers. These raw pointers can later be dereferenced within safe APIs of the crate-such as arenavec::common::SliceVec::push-potentially leading to arbitrary memory access.
  • The safe API arenavec::common::SliceVec::reserve can reach the private function arenavec::common::allocate_inner. Incorrect behavior in allocate_inner may result in a SliceVec with an increased capacity, even though the underlying memory has not actually been expanded. This mismatch between SliceVec.capacity and the actual reserved memory can lead to a heap buffer overflow.
  • The safe API arenavec::common::SliceVec::split_off can duplicate the ownership of the elements in self (of type SliceVec) if they implement the Drop trait. Specifically, when at == 0, the method returns a new SliceVec with the same length as self. Since both self and the returned object point to the same heap memory, dropping one will deallocate the shared memory. When the other is subsequently dropped, it will attempt to free the same memory again, resulting in a double free violation.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Attack requirements: None — no deployment-specific condition has to hold.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

GHSA-3632-54q8-m96x is classified as CWE-122: Heap-based Buffer Overflow. A write past the end of a heap allocation corrupts allocator metadata or neighbouring objects.

Affected software

GHSA-3632-54q8-m96x is recorded against 1 package.

  • arenavec

Timeline and source

Published on 2 September 2025 and last revised on 28 October 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)
rustsec.org (Web)

Other advisories for this package

arenavec has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-122: Heap-based Buffer Overflow) in other software:

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
CWE CWE-122
Public Exploit ✅ No
Source OSV
Published 2025-09-02
Updated 2026-08-20
Modified 2025-10-28
Fix URL N/A

Affected Packages

Software From version Fixed in
arenavec — —

Similar Threats

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