CVE-2022-49709 (GCVE-0-2022-49709)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:24 – Updated: 2026-05-11 19:05
VLAI
Title
cfi: Fix __cfi_slowpath_diag RCU usage with cpuidle
Summary
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6641 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: cf68fffb66d60d96209446bfc4a15291dc5a5d41 , < 75f3a5fa2ad049c85ab5d5ee1ed9cfaa7e62c5ed (git)
Affected: cf68fffb66d60d96209446bfc4a15291dc5a5d41 , < ca3897f2ac02ceae5e6fa794f83c36f9885b93da (git)
Affected: cf68fffb66d60d96209446bfc4a15291dc5a5d41 , < 57cd6d157eb479f0a8e820fd36b7240845c8a937 (git)
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Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.15.49 , ≤ 5.15.* (semver)
Unaffected: 5.18.6 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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}



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