What is CVE-2026-80748?

CVE-2026-80748 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.17 onward and patched in 6.18.46, 7.1.10 and 7.2. CVE-2026-80748 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-80748?

CVE-2026-80748 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-2026-80748?

Yes, CVE-2026-80748 has been patched. Fixed versions include 6.18.46, 7.1.10 and 7.2. If you are running Linux kernel 6.17 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-80748 actively exploited?

CVE-2026-80748 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-80748

High

In the Linux kernel, the following vulnerability has been resolved: mmc: loongson2: Fix sg iteration in data reorder functions In ls2k0500_mmc_reorder_cmd_data() and ls2k2000_mmc_reorder_cmd_data(), the for_each_sg() macro already iterates over the scatterlist entries, with 'sg' pointing to the current entry. However, the code incorrectly uses '&sg[i]' and 'sg_dma_len(&sg[i])' inside the loop, which treats 'sg' as an array base and indexes it again, leading to access of wrong sg entries (or out-of-bounds if the list is not an array).

Package Linux Kernel

Published 2026-09-03

Last modified 2026-09-04

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 6.17 and later are affected. Fixed in 6.18.46, 7.1.10, 7.2 and their respective stable series.

Affected from

≥ 6.17

Fixed in

✓ 6.18.46 6.18.x ✓ 7.1.10 7.1.x ✓ 7.2

References

3 total

Details

CVE ID CVE-2026-80748

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-09-03

Modified 2026-09-04

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-80748?

CVE-2026-80748 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.17 onward and has been patched in 6.18.46, 7.1.10 and 7.2. CVE-2026-80748 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-80748?

CVE-2026-80748 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-2026-80748?

Yes. CVE-2026-80748 has been patched. Fixed versions include 6.18.46, 7.1.10 and 7.2. If you are running Linux kernel 6.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-80748 actively exploited?

No. CVE-2026-80748 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.