What is CVE-2022-49709?

CVE-2022-49709 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.13 onward and patched in 5.15.49, 5.18.6 and 5.19. CVE-2022-49709 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49709?

CVE-2022-49709 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-49709?

Yes, CVE-2022-49709 has been patched. Fixed versions include 5.15.49, 5.18.6 and 5.19. If you are running Linux kernel 5.13 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49709 actively exploited?

CVE-2022-49709 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49709

Medium

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.

Package Linux Kernel

Published 2025-02-26

Last modified 2025-10-24

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 5.13 and later are affected. Fixed in 5.15.49, 5.18.6, 5.19 and their respective stable series.

Affected from

≥ 5.13

Fixed in

✓ 5.15.49 5.15.x ✓ 5.18.6 5.18.x ✓ 5.19

References

The following references provide additional information about CVE-2022-49709 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/57cd6d157eb479f0a8e820fd36b7240845c8a937
Patch
Kernel patch commit
https://git.kernel.org/stable/c/75f3a5fa2ad049c85ab5d5ee1ed9cfaa7e62c5ed
Patch
Kernel patch commit
https://git.kernel.org/stable/c/ca3897f2ac02ceae5e6fa794f83c36f9885b93da
Patch

Details

CVE ID CVE-2022-49709

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-10-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49709?

CVE-2022-49709 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.13 onward and has been patched in 5.15.49, 5.18.6 and 5.19. CVE-2022-49709 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49709?

CVE-2022-49709 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-49709?

Yes — CVE-2022-49709 has been patched. Fixed versions include 5.15.49, 5.18.6 and 5.19. If you are running Linux kernel 5.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49709 actively exploited?

No — CVE-2022-49709 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.