CVE-2026-45253CWE-787

Missing validation in ptrace(PT_SC_REMOTE)

High · published May 21, 2026

CVSS v3.1
8.4
EPSS
0%
Percentile
7.4
In the wild
Unconfirmed
What it is

ptrace(PT_SC_REMOTE) failed to properly validate parameters for the syscall(2) and __syscall(2) meta-system calls. As a result, a user with the ability to debug a process may trigger arbitrary code execution in the kernel, even if the target process has no special privileges.

The missing validation allows an unprivileged local user to escalate privileges, potentially gaining full control of the affected system.

The record
Technical detail
CVSS v3.1
8.4 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00182 · 7.4th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-05-21T09:17Z
EPSS history
Timeline
  • 21 MAY 09:17Z
    Missing validation in ptrace(PT_SC_REMOTE)
    cvelistv5