Integer Overflow to Buffer Overflow Affecting snpguest package, versions <0.3.2-150600.3.14.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.55% (43rd percentile)

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  • Snyk IDSNYK-SLES156-SNPGUEST-18672935
  • published12 Aug 2026
  • disclosed11 Aug 2026

Introduced: 11 Aug 2026

NewCVE-2026-25541  (opens in a new tab)
CWE-680  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 snpguest to version 0.3.2-150600.3.14.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream snpguest package and not the snpguest package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

Bytes is a utility library for working with bytes. From version 1.2.1 to before 1.11.1, Bytes is vulnerable to integer overflow in BytesMut::reserve. In the unique reclaim path of BytesMut::reserve, if the condition "v_capacity >= new_cap + offset" uses an unchecked addition. When new_cap + offset overflows usize in release builds, this condition may incorrectly pass, causing self.cap to be set to a value that exceeds the actual allocated capacity. Subsequent APIs such as spare_capacity_mut() then trust this corrupted cap value and may create out-of-bounds slices, leading to UB. This behavior is observable in release builds (integer overflow wraps), whereas debug builds panic due to overflow checks. This issue has been patched in version 1.11.1.

CVSS Base Scores

version 3.1