What is CVE-2022-49903?

CVE-2022-49903 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 2.6.26 onward and patched in 4.19.265, 5.4.224, 5.10.154 and others. CVE-2022-49903 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49903?

CVE-2022-49903 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-2022-49903?

Yes, CVE-2022-49903 has been patched. Fixed versions include 4.19.265, 5.4.224, 5.10.154 and others. If you are running Linux kernel 2.6.26 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49903 actively exploited?

CVE-2022-49903 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49903

Medium

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix WARNING in ip6_route_net_exit_late() During the initialization of ip6_route_net_init_late(), if file ipv6_route or rt6_stats fails to be created, the initialization is successful by default. Therefore, the ipv6_route or rt6_stats file doesn't be found during the remove in ip6_route_net_exit_late(). It will cause WRNING. The following is the stack information: name 'rt6_stats' WARNING: CPU: 0 PID: 9 at fs/proc/generic.c:712 remove_proc_entry+0x389/0x460 Modules linked in: Workqueue: netns cleanup_net RIP: 0010:remove_proc_entry+0x389/0x460 PKRU: 55555554 Call Trace: <TASK> ops_exit_list+0xb0/0x170 cleanup_net+0x4ea/0xb00 process_one_work+0x9bf/0x1710 worker_thread+0x665/0x1080 kthread+0x2e4/0x3a0 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

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 2.6.26 and later are affected. Fixed in 4.19.265, 5.4.224, 5.10.154, 5.15.78, 6.0.8, 6.1 and their respective stable series.

Affected from

≥ 2.6.26

Fixed in

✓ 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-2022-49903 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/080589287127838046077904f34d5054ea0f895c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/0ed71af4d017d2bd2cbb8f7254f613a4914def26
Patch
Kernel patch commit
https://git.kernel.org/stable/c/381453770f731f0f43616a1cd4c759b7807a1517
Patch

6 patch commits total View all on NVD

Details

CVE ID CVE-2022-49903

Severity Medium

CVSS score 5.5 / 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-2022-49903?

CVE-2022-49903 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 2.6.26 onward and has been patched in 4.19.265, 5.4.224, 5.10.154 and others. CVE-2022-49903 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49903?

CVE-2022-49903 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-2022-49903?

Yes — CVE-2022-49903 has been patched. Fixed versions include 4.19.265, 5.4.224, 5.10.154 and others. If you are running Linux kernel 2.6.26 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49903 actively exploited?

No — CVE-2022-49903 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.