What is CVE-2022-48985?

CVE-2022-48985 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10, affecting Linux kernel versions from 5.15 onward and patched in 5.15.83, 6.0.13 and 6.1. CVE-2022-48985 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-48985?

CVE-2022-48985 has a CVSS score of 4.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-48985?

Yes, CVE-2022-48985 has been patched. Fixed versions include 5.15.83, 6.0.13 and 6.1. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-48985 actively exploited?

CVE-2022-48985 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-48985

Medium

In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix race on per-CQ variable napi work_done After calling napi_complete_done(), the NAPIF_STATE_SCHED bit may be cleared, and another CPU can start napi thread and access per-CQ variable, cq->work_done. If the other thread (for example, from busy_poll) sets it to a value >= budget, this thread will continue to run when it should stop, and cause memory corruption and panic. To fix this issue, save the per-CQ work_done variable in a local variable before napi_complete_done(), so it won't be corrupted by a possible concurrent thread after napi_complete_done(). Also, add a flag bit to advertise to the NIC firmware: the NAPI work_done variable race is fixed, so the driver is able to reliably support features like busy_poll.

Package Linux Kernel

Published 2024-10-21

Last modified 2024-11-07

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

4.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 5.15 and later are affected. Fixed in 5.15.83, 6.0.13, 6.1 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 5.15.83 5.15.x ✓ 6.0.13 6.0.x ✓ 6.1

References

The following references provide additional information about CVE-2022-48985 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/18010ff776fa42340efc428b3ea6d19b3e7c7b21
Patch
Kernel patch commit
https://git.kernel.org/stable/c/6740d8572ccd1bca50d8a1ca2bedc333f50ed5f3
Patch
Kernel patch commit
https://git.kernel.org/stable/c/fe50a9bbeb1f042e756c5cfa7708112c944368de
Patch

Details

CVE ID CVE-2022-48985

Severity Medium

CVSS score 4.7 / 10

CVSS version 3.1

Published 2024-10-21

Modified 2024-11-07

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-48985?

CVE-2022-48985 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 . It affects Linux kernel versions from 5.15 onward and has been patched in 5.15.83, 6.0.13 and 6.1. CVE-2022-48985 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-48985?

CVE-2022-48985 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-48985?

Yes — CVE-2022-48985 has been patched. Fixed versions include 5.15.83, 6.0.13 and 6.1. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-48985 actively exploited?

No — CVE-2022-48985 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.