What is CVE-2022-49907?

CVE-2022-49907 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 2.6.28 onward and patched in 4.9.333, 4.14.299, 4.19.265 and others. CVE-2022-49907 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49907?

CVE-2022-49907 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2022-49907?

Yes, CVE-2022-49907 has been patched. Fixed versions include 4.9.333, 4.14.299, 4.19.265 and others. If you are running Linux kernel 2.6.28 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49907 actively exploited?

CVE-2022-49907 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49907

High

In the Linux kernel, the following vulnerability has been resolved: net: mdio: fix undefined behavior in bit shift for __mdiobus_register Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds in drivers/net/phy/mdio_bus.c:586:27 left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: <TASK> dump_stack_lvl+0x7d/0xa5 dump_stack+0x15/0x1b ubsan_epilogue+0xe/0x4e __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c __mdiobus_register+0x49d/0x4e0 fixed_mdio_bus_init+0xd8/0x12d do_one_initcall+0x76/0x430 kernel_init_freeable+0x3b3/0x422 kernel_init+0x24/0x1e0 ret_from_fork+0x1f/0x30 </TASK>

Package Linux Kernel

Published 2025-05-01

Last modified 2025-11-11

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 2.6.28 and later are affected. Fixed in 4.9.333, 4.14.299, 4.19.265, 5.4.224, 5.10.154, 5.15.78, 6.0.8, 6.1 and their respective stable series.

Affected from

≥ 2.6.28

Fixed in

✓ 4.9.333 4.9.x ✓ 4.14.299 4.14.x ✓ 4.19.265 4.19.x ✓ 5.4.224 5.4.x ✓ 5.10.154 5.10.x ✓ 5.15.78 5.15.x ✓ 6.0.8 6.0.x ✓ 6.1

References

The following references provide additional information about CVE-2022-49907 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/20ed01a7b9af6e6a3c33761eebbb710ea6dd49b7
Patch
Kernel patch commit
https://git.kernel.org/stable/c/40e4eb324c59e11fcb927aa46742d28aba6ecb8a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/4954b5359eb141499492fadfab891e28905509e2
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2022-49907

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-05-01

Modified 2025-11-11

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49907?

CVE-2022-49907 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 2.6.28 onward and has been patched in 4.9.333, 4.14.299, 4.19.265 and others. CVE-2022-49907 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49907?

CVE-2022-49907 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2022-49907?

Yes — CVE-2022-49907 has been patched. Fixed versions include 4.9.333, 4.14.299, 4.19.265 and others. If you are running Linux kernel 2.6.28 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49907 actively exploited?

No — CVE-2022-49907 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.