What is CVE-2026-45962?

CVE-2026-45962 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.0 onward and patched in 6.1.165, 6.6.128, 6.12.75 and others. CVE-2026-45962 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-45962?

CVE-2026-45962 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-2026-45962?

Yes, CVE-2026-45962 has been patched. Fixed versions include 6.1.165, 6.6.128, 6.12.75 and others. If you are running Linux kernel 6.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-45962 actively exploited?

CVE-2026-45962 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-45962

Medium

In the Linux kernel, the following vulnerability has been resolved: ublk: Validate SQE128 flag before accessing the cmd ublk_ctrl_cmd_dump() accesses (header *)sqe->cmd before IO_URING_F_SQE128 flag check. This could cause out of boundary memory access. Move the SQE128 flag check earlier in ublk_ctrl_uring_cmd() to return -EINVAL immediately if the flag is not set.

Package Linux Kernel

Published 2026-05-27

Last modified 2026-06-16

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 6.0 and later are affected. Fixed in 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0 and their respective stable series.

Affected from

≥ 6.0

Fixed in

✓ 6.1.165 6.1.x ✓ 6.6.128 6.6.x ✓ 6.12.75 6.12.x ✓ 6.18.14 6.18.x ✓ 6.19.4 6.19.x ✓ 7.0

References

6 total

Kernel Git
https://git.kernel.org/stable/c/17d33ba7291100008360b5a354962db37ad80684

Patch
Kernel Git
https://git.kernel.org/stable/c/31cac6acf77ece488f29fb8f79589d9298e969c8

Patch
Kernel Git
https://git.kernel.org/stable/c/4b4dff498f46e9802f71bc84258bf73065f51c6a

Patch
Kernel Git
https://git.kernel.org/stable/c/da7e4b75e50c087d2031a92f6646eb90f7045a67

Patch
Kernel Git
https://git.kernel.org/stable/c/dbe8e81a2ec608f87f79a34f6444cd62f6a243bb

Patch

Showing 5 of 6 references View all on NVD

Details

CVE ID CVE-2026-45962

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-27

Modified 2026-06-16

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-45962?

CVE-2026-45962 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.0 onward and has been patched in 6.1.165, 6.6.128, 6.12.75 and others. CVE-2026-45962 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-45962?

CVE-2026-45962 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-2026-45962?

Yes. CVE-2026-45962 has been patched. Fixed versions include 6.1.165, 6.6.128, 6.12.75 and others. If you are running Linux kernel 6.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-45962 actively exploited?

No. CVE-2026-45962 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.