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🛡️ CVE-2023-50711 — vmm-sys-util

🟡 CVSS 5.7 — Medium ✅ No Known Exploit CWE-787 OSV
5.7
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

serde deserialization for FamStructWrapper lacks bound checks that could potentially lead to out-of-bounds memory access

Impact

An issue was discovered in the FamStructWrapper::deserialize implementation

provided by the crate for vmm_sys_util::fam::FamStructWrapper, which can lead

to out of bounds memory accesses. The deserialization does not check that the

length stored in the header matches the flexible array length. Mismatch in the

lengths might allow out of bounds memory access through Rust-safe methods.

Impacted versions: >= 0.5.0

Patches

The issue was corrected in version 0.12.0 by inserting a check that verifies

the lengths of compared flexible arrays are equal for any deserialized header

and aborting deserialization otherwise. Moreover, the API was changed so that

header length can only be modified through Rust-unsafe code. This ensures that

users cannot trigger out-of-bounds memory access from Rust-safe code.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality none, integrity low, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Changed — a successful attack reaches components beyond the vulnerable one.
  • Confidentiality impact: None.
  • Integrity impact: Low — limited, and the attacker does not choose what is affected.
  • Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2023-50711 is classified as CWE-787: Out-of-bounds Write. Data is written past the end or before the start of a buffer, corrupting whatever is stored there.

Affected software

CVE-2023-50711 is recorded against 1 package.

  • vmm-sys-util

Timeline and source

Published on 2 January 2024 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
lists.fedoraproject.org (Web)
rustsec.org (Web)

Same weakness in other software

These advisories are the same class of weakness (CWE-787: Out-of-bounds Write) in other software:

CVE-2023-50711 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 5.7
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
CWE CWE-787
Public Exploit ✅ No
Source OSV
Published 2024-01-02
Updated 2026-08-20
Modified 2026-06-17

Affected Packages

Software From version Fixed in
vmm-sys-util — —

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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