What is CVE-2026-64349?

CVE-2026-64349 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.18.32 onward and patched in 6.18.40, 7.1.4 and 7.2. CVE-2026-64349 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-64349?

CVE-2026-64349 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-2026-64349?

Yes, CVE-2026-64349 has been patched. Fixed versions include 6.18.40, 7.1.4 and 7.2. If you are running Linux kernel 6.18.32 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-64349 actively exploited?

CVE-2026-64349 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-64349

Medium

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: fix dwc3_readl() and dwc3_writel() calls in dwc3_ulpi_setup() The dwc3_ulpi_setup() calls the register read and write calls with dwc3->regs when both these calls take the dwc3 structure directly. Chnage these two calls to fix the following sparse warning, and possibly a nasty bug in the dwc3_ulpi_setup() code: drivers/usb/dwc3/core.c:796:45: warning: incorrect type in argument 1 (different address spaces) drivers/usb/dwc3/core.c:796:45: expected struct dwc3 *dwc drivers/usb/dwc3/core.c:796:45: got void [noderef] __iomem *regs drivers/usb/dwc3/core.c:798:40: warning: incorrect type in argument 1 (different address spaces) drivers/usb/dwc3/core.c:798:40: expected struct dwc3 *dwc drivers/usb/dwc3/core.c:798:40: got void [noderef] __iomem *regs

Package Linux Kernel

Published 2026-07-25

Last modified 2026-09-03

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 6.18.32, 7.0 and later are affected. Fixed in 6.18.40, 7.1.4, 7.2 and their respective stable series.

Affected from

≥ 6.18.32 ≥ 7.0

Fixed in

✓ 6.18.40 6.18.x ✓ 7.1.4 7.1.x ✓ 7.2

References

3 total

Kernel Git
https://git.kernel.org/stable/c/41a4e80d5af04855e68ac88f5e2cd07fa67287f8

Patch
Kernel Git
https://git.kernel.org/stable/c/4349e487a1149ff33b65d53427b8aca57f2e4578

Patch
Kernel Git
https://git.kernel.org/stable/c/e0f844d9d74200d311c6438a0f04270834ba5365

Patch

Details

CVE ID CVE-2026-64349

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-07-25

Modified 2026-09-03

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-64349?

CVE-2026-64349 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.18.32 onward and has been patched in 6.18.40, 7.1.4 and 7.2. CVE-2026-64349 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-64349?

CVE-2026-64349 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-2026-64349?

Yes. CVE-2026-64349 has been patched. Fixed versions include 6.18.40, 7.1.4 and 7.2. If you are running Linux kernel 6.18.32 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-64349 actively exploited?

No. CVE-2026-64349 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.