What is CVE-2022-49698?

CVE-2022-49698 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 4.18 onward and patched in 5.10.127, 5.15.51, 5.18.8 and others. CVE-2022-49698 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49698?

CVE-2022-49698 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-2022-49698?

Yes, CVE-2022-49698 has been patched. Fixed versions include 5.10.127, 5.15.51, 5.18.8 and others. If you are running Linux kernel 4.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49698 actively exploited?

CVE-2022-49698 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49698

High

In the Linux kernel, the following vulnerability has been resolved: netfilter: use get_random_u32 instead of prandom bh might occur while updating per-cpu rnd_state from user context, ie. local_out path. BUG: using smp_processor_id() in preemptible [00000000] code: nginx/2725 caller is nft_ng_random_eval+0x24/0x54 [nft_numgen] Call Trace: check_preemption_disabled+0xde/0xe0 nft_ng_random_eval+0x24/0x54 [nft_numgen] Use the random driver instead, this also avoids need for local prandom state. Moreover, prandom now uses the random driver since d4150779e60f ("random32: use real rng for non-deterministic randomness"). Based on earlier patch from Pablo Neira.

Package Linux Kernel

Published 2025-02-26

Last modified 2025-10-24

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 4.18 and later are affected. Fixed in 5.10.127, 5.15.51, 5.18.8, 5.19 and their respective stable series.

Affected from

≥ 4.18

Fixed in

✓ 5.10.127 5.10.x ✓ 5.15.51 5.15.x ✓ 5.18.8 5.18.x ✓ 5.19

References

The following references provide additional information about CVE-2022-49698 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/15cc30ac2a8d7185f8ebf97dd1ddd90a7c79783b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/6ce71f83f798be7e1ca68707fec449fbecb38852
Patch
Kernel patch commit
https://git.kernel.org/stable/c/b1fd94e704571f98b21027340eecf821b2bdffba
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2022-49698

Severity High

CVSS score 7.8 / 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-2022-49698?

CVE-2022-49698 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 4.18 onward and has been patched in 5.10.127, 5.15.51, 5.18.8 and others. CVE-2022-49698 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49698?

CVE-2022-49698 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-2022-49698?

Yes — CVE-2022-49698 has been patched. Fixed versions include 5.10.127, 5.15.51, 5.18.8 and others. If you are running Linux kernel 4.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49698 actively exploited?

No — CVE-2022-49698 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.