What is CVE-2022-48647?

CVE-2022-48647 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 5.10.122 onward and patched in 5.10.146, 5.15.71, 5.19.12 and others. CVE-2022-48647 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-48647?

CVE-2022-48647 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-2022-48647?

Yes, CVE-2022-48647 has been patched. Fixed versions include 5.10.146, 5.15.71, 5.19.12 and others. If you are running Linux kernel 5.10.122 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-48647 actively exploited?

CVE-2022-48647 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-2022-48647

Medium

In the Linux kernel, the following vulnerability has been resolved: sfc: fix TX channel offset when using legacy interrupts In legacy interrupt mode the tx_channel_offset was hardcoded to 1, but that's not correct if efx_sepparate_tx_channels is false. In that case, the offset is 0 because the tx queues are in the single existing channel at index 0, together with the rx queue. Without this fix, as soon as you try to send any traffic, it tries to get the tx queues from an uninitialized channel getting these errors: WARNING: CPU: 1 PID: 0 at drivers/net/ethernet/sfc/tx.c:540 efx_hard_start_xmit+0x12e/0x170 [sfc] [...] RIP: 0010:efx_hard_start_xmit+0x12e/0x170 [sfc] [...] Call Trace: <IRQ> dev_hard_start_xmit+0xd7/0x230 sch_direct_xmit+0x9f/0x360 __dev_queue_xmit+0x890/0xa40 [...] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 [...] RIP: 0010:efx_hard_start_xmit+0x153/0x170 [sfc] [...] Call Trace: <IRQ> dev_hard_start_xmit+0xd7/0x230 sch_direct_xmit+0x9f/0x360 __dev_queue_xmit+0x890/0xa40 [...]

Package Linux Kernel

Published 2024-04-28

Last modified 2025-03-04

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-2022-48647 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 5.10.122, 5.15.47, 5.17.15, 5.18.4, 5.19 and later are affected. Fixed in 5.10.146, 5.15.71, 5.19.12, 6.0 and their respective stable series.

Affected from

≥ 5.10.122 ≥ 5.15.47 ≥ 5.17.15 ≥ 5.18.4 ≥ 5.19

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/360910b88d1466a90644a4e0533803b594344a2b

Mailing List Patch
Kernel Git
https://git.kernel.org/stable/c/5f623a77cfc2d501d72bcb4f9ee71721e6c766ff

Mailing List Patch
Kernel Git
https://git.kernel.org/stable/c/b4afd3878f961d3517f27b3213730fceef77945c

Mailing List Patch
Kernel Git
https://git.kernel.org/stable/c/f232af4295653afa4ade3230462b3be15ad16419

Mailing List Patch

Details

CVE ID CVE-2022-48647

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-04-28

Modified 2025-03-04

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-48647?

CVE-2022-48647 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 5.10.122 onward and has been patched in 5.10.146, 5.15.71, 5.19.12 and others. CVE-2022-48647 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-48647?

CVE-2022-48647 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-2022-48647?

Yes. CVE-2022-48647 has been patched. Fixed versions include 5.10.146, 5.15.71, 5.19.12 and others. If you are running Linux kernel 5.10.122 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-48647 actively exploited?

No. CVE-2022-48647 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.