What is CVE-2026-46315?

CVE-2026-46315 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.7 onward and patched in 6.12.92, 6.18.34, 7.0.11 and others. CVE-2026-46315 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46315?

CVE-2026-46315 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-2026-46315?

Yes, CVE-2026-46315 has been patched. Fixed versions include 6.12.92, 6.18.34, 7.0.11 and others. If you are running Linux kernel 6.7 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46315 actively exploited?

CVE-2026-46315 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46315

Medium

In the Linux kernel, the following vulnerability has been resolved: io_uring/waitid: clear waitid info before copying it to userspace IORING_OP_WAITID stores its result fields in struct io_waitid::info and later copies them to userspace siginfo. The prep path initializes the request arguments, but it does not initialize info itself. If the wait operation completes without reporting a child event, the common wait code can return without writing wo_info. In that case io_waitid_finish() still copies iw->info to userspace, exposing stale bytes from the reused io_kiocb command storage. Clear the result storage during prep so the io_uring path matches the regular waitid syscall, which uses a zero-initialized struct waitid_info.

Package Linux Kernel

Published 2026-06-09

Last modified 2026-07-23

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 6.7 and later are affected. Fixed in 6.12.92, 6.18.34, 7.0.11, 7.1 and their respective stable series.

Affected from

≥ 6.7

Fixed in

✓ 6.12.92 6.12.x ✓ 6.18.34 6.18.x ✓ 7.0.11 7.0.x ✓ 7.1

References

4 total

Kernel Git
https://git.kernel.org/stable/c/4d2a0de611ab60d02fc768ae0cd5918b16bd5474

Patch
Kernel Git
https://git.kernel.org/stable/c/93d93f5f8da791e98159795c6ef683f45bd95d13

Patch
Kernel Git
https://git.kernel.org/stable/c/954518e5a4a5efc5033253f6e36fc7b9f98363a3

Patch
Kernel Git
https://git.kernel.org/stable/c/b737c6612c60c23b40a9f31749b99e6f61943847

Patch

Details

CVE ID CVE-2026-46315

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-06-09

Modified 2026-07-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46315?

CVE-2026-46315 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.7 onward and has been patched in 6.12.92, 6.18.34, 7.0.11 and others. CVE-2026-46315 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46315?

CVE-2026-46315 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-2026-46315?

Yes. CVE-2026-46315 has been patched. Fixed versions include 6.12.92, 6.18.34, 7.0.11 and others. If you are running Linux kernel 6.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46315 actively exploited?

No. CVE-2026-46315 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.