What is CVE-2022-49732?

CVE-2022-49732 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 5.15.51, 5.18.8 and 5.19. CVE-2022-49732 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49732?

CVE-2022-49732 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-2022-49732?

Yes, CVE-2022-49732 has been patched. Fixed versions include 5.15.51, 5.18.8 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-2022-49732 actively exploited?

CVE-2022-49732 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49732

Medium

In the Linux kernel, the following vulnerability has been resolved: sock: redo the psock vs ULP protection check Commit 8a59f9d1e3d4 ("sock: Introduce sk->sk_prot->psock_update_sk_prot()") has moved the inet_csk_has_ulp(sk) check from sk_psock_init() to the new tcp_bpf_update_proto() function. I'm guessing that this was done to allow creating psocks for non-inet sockets. Unfortunately the destruction path for psock includes the ULP unwind, so we need to fail the sk_psock_init() itself. Otherwise if ULP is already present we'll notice that later, and call tcp_update_ulp() with the sk_proto of the ULP itself, which will most likely result in the ULP looping its callbacks.

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 5.15.51, 5.18.8, 5.19 and their respective stable series.

Affected from

≥ 5.13

Fixed in

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

References

The following references provide additional information about CVE-2022-49732 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/72fa0f65b56605b8a9ae9fba2082f2123f7fe017
Patch
Kernel patch commit
https://git.kernel.org/stable/c/922309e50befb0cfa5cb65e4989b7706d6578846
Patch
Kernel patch commit
https://git.kernel.org/stable/c/e34a07c0ae3906f97eb18df50902e2a01c1015b6
Patch

Details

CVE ID CVE-2022-49732

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-2022-49732?

CVE-2022-49732 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 5.15.51, 5.18.8 and 5.19. CVE-2022-49732 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49732?

CVE-2022-49732 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-2022-49732?

Yes — CVE-2022-49732 has been patched. Fixed versions include 5.15.51, 5.18.8 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-2022-49732 actively exploited?

No — CVE-2022-49732 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.