CVE-2022-49709

UNKNOWN 0.0

cfi: Fix __cfi_slowpath_diag RCU usage with cpuidle

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	linux
Product	linux
Ecosystems	Linux Kernel
Industries	Technology
Published	Feb 26, 2025
Last Updated	May 11, 2026

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Affected Versions

Linux / Linux

cf68fffb66d60d96209446bfc4a15291dc5a5d41 < 75f3a5fa2ad049c85ab5d5ee1ed9cfaa7e62c5ed cf68fffb66d60d96209446bfc4a15291dc5a5d41 < ca3897f2ac02ceae5e6fa794f83c36f9885b93da cf68fffb66d60d96209446bfc4a15291dc5a5d41 < 57cd6d157eb479f0a8e820fd36b7240845c8a937

Linux / Linux

5.13

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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