CVE-2022-49709

MEDIUM EPSS 14.6%
Published Feb 26, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: cfi: Fix __cfi_slowpath_diag RCU usage with cpuidle RCU_NONIDLE usage during __cfi_slowpath_diag can result in an invalid RCU state in the cpuidle code path: WARNING: CPU: 1 PID: 0 at kernel/rcu/tree.c:613 rcu_eqs_enter+0xe4/0x138 ... Call trace: rcu_eqs_enter+0xe4/0x138 rcu_idle_enter+0xa8/0x100 cpuidle_enter_state+0x154/0x3a8 cpuidle_enter+0x3c/0x58 do_idle.llvm.6590768638138871020+0x1f4/0x2ec cpu_startup_entry+0x28/0x2c secondary_start_kernel+0x1b8/0x220 __secondary_switched+0x94/0x98 Instead, call rcu_irq_enter/exit to wake up RCU only when needed and disable interrupts for the entire CFI shadow/module check when we do.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
14.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥5.13  –  <5.15.49
linuxlinux_kernel*≥5.16  –  <5.18.6
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/57cd6d157eb479f0a8e820fd36b7240845c8a937
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/75f3a5fa2ad049c85ab5d5ee1ed9cfaa7e62c5ed
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ca3897f2ac02ceae5e6fa794f83c36f9885b93da
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/57cd6d157eb479f0a8e820fd36b7240845c8a937
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/75f3a5fa2ad049c85ab5d5ee1ed9cfaa7e62c5ed
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ca3897f2ac02ceae5e6fa794f83c36f9885b93da
    Patch