CVE-2026-89765
Description
A flaw was found in the Linux kernel's timers/itimer component. On native sparc64 systems, the struct __kernel_old_timeval contains uninitialized padding bytes. When put_itimerval() copies this structure to userspace, these padding bytes can be exposed, leading to information disclosure. This vulnerability allows a local attacker to potentially read sensitive kernel memory.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Files or Directories; Read Memory; Read Application Data
Sensitive data may be exposed to attackers.
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