What is CVE-2026-46229?

CVE-2026-46229 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.4 onward and patched in 6.6.140, 6.12.90, 6.18.32 and others. CVE-2026-46229 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46229?

CVE-2026-46229 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-2026-46229?

Yes, CVE-2026-46229 has been patched. Fixed versions include 6.6.140, 6.12.90, 6.18.32 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46229 actively exploited?

CVE-2026-46229 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46229

Medium

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure KFD VRAM allocations set AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE but not AMDGPU_GEM_CREATE_VRAM_CLEARED, leaving freshly allocated VRAM with stale data from prior use observable by compute kernels. The GEM ioctl path already sets VRAM_CLEARED for all userspace allocations via amdgpu_gem_create_ioctl() and amdgpu_mode_dumb_create(). The KFD path was missing this flag, allowing stale page table remnants to leak into user buffers. This causes crashes in RCCL P2P transport where non-zero data in ptrExchange/head/tail fields corrupts the protocol handshake.

Package Linux Kernel

Published 2026-05-28

Last modified 2026-06-10

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 5.4 and later are affected. Fixed in 6.6.140, 6.12.90, 6.18.32, 7.0.9, 7.1 and their respective stable series.

Affected from

≥ 5.4

Fixed in

✓ 6.6.140 6.6.x ✓ 6.12.90 6.12.x ✓ 6.18.32 6.18.x ✓ 7.0.9 7.0.x ✓ 7.1

References

5 total

Kernel Git
https://git.kernel.org/stable/c/047d44d8d29a6a1a5757256837aa9dd78e3cd0b5

Patch
Kernel Git
https://git.kernel.org/stable/c/1db431380879fd9d28b763a88a0c0431be5be8df

Patch
Kernel Git
https://git.kernel.org/stable/c/32b153658f017ad2f5bf8aab479e8d16ac95bc3a

Patch
Kernel Git
https://git.kernel.org/stable/c/77d0b5d11387071770246fd0185a69fa28e8e109

Patch
Kernel Git
https://git.kernel.org/stable/c/ad52d61d82181dbdb7f05826de38352d5e550cc2

Patch

Details

CVE ID CVE-2026-46229

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-28

Modified 2026-06-10

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46229?

CVE-2026-46229 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.4 onward and has been patched in 6.6.140, 6.12.90, 6.18.32 and others. CVE-2026-46229 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46229?

CVE-2026-46229 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-2026-46229?

Yes. CVE-2026-46229 has been patched. Fixed versions include 6.6.140, 6.12.90, 6.18.32 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46229 actively exploited?

No. CVE-2026-46229 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.