What is CVE-2022-48648?

CVE-2022-48648 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 5.10 onward and patched in 5.10.146, 5.15.71, 5.19.12 and others. CVE-2022-48648 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-48648?

CVE-2022-48648 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-2022-48648?

Yes, CVE-2022-48648 has been patched. Fixed versions include 5.10.146, 5.15.71, 5.19.12 and others. If you are running Linux kernel 5.10 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-48648 actively exploited?

CVE-2022-48648 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2022-48648

Medium

In the Linux kernel, the following vulnerability has been resolved: sfc: fix null pointer dereference in efx_hard_start_xmit Trying to get the channel from the tx_queue variable here is wrong because we can only be here if tx_queue is NULL, so we shouldn't dereference it. As the above comment in the code says, this is very unlikely to happen, but it's wrong anyway so let's fix it. I hit this issue because of a different bug that caused tx_queue to be NULL. If that happens, this is the error message that we get here: BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 [...] RIP: 0010:efx_hard_start_xmit+0x153/0x170 [sfc]

Package Linux Kernel

Published 2024-04-28

Last modified 2025-01-14

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

Weakness type

CWE-476

CVE-2022-48648 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.10 and later are affected. Fixed in 5.10.146, 5.15.71, 5.19.12, 6.0 and their respective stable series.

Affected from

≥ 5.10

Fixed in

✓ 5.10.146 5.10.x ✓ 5.15.71 5.15.x ✓ 5.19.12 5.19.x ✓ 6.0

References

4 total

Kernel Git
https://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3

Patch
Kernel Git
https://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998

Patch
Kernel Git
https://git.kernel.org/stable/c/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7

Patch
Kernel Git
https://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03

Patch

Details

CVE ID CVE-2022-48648

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-04-28

Modified 2025-01-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-48648?

CVE-2022-48648 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 5.10 onward and has been patched in 5.10.146, 5.15.71, 5.19.12 and others. CVE-2022-48648 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-48648?

CVE-2022-48648 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-2022-48648?

Yes. CVE-2022-48648 has been patched. Fixed versions include 5.10.146, 5.15.71, 5.19.12 and others. If you are running Linux kernel 5.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-48648 actively exploited?

No. CVE-2022-48648 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.