CVE-2025-55159
slab: Slab: Out-of-bounds Memory Access Vulnerability
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · August 12, 2025
Updated · June 30, 2026
Description
A flaw was found in slab. The get_disjoint_mut method incorrectly validates index boundaries against the slab's capacity rather than its length, enabling a local attacker to access uninitialized memory. This memory access occurs when requesting disjoint mutable references within the slab. Consequently, this can lead to information disclosure.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
To mitigate this flaw avoid using get_disjoint_mut with indices that might be beyond the slab's actual length
CVSS / CWE
CVSS 3.1 · 4CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer