CVE-2026-63881: In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix a vulnerability of intege

Q: How do I fix CVE-2026-63881?

linux kernel: upgrade to 6.6.143, 6.12.93, 6.18.35, 7.0.12. Exact commands for each OS are on this page.

Q: Is CVE-2026-63881 being exploited?

CVE-2026-63881 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-63881 affect?

CVE-2026-63881 affects linux kernel. Severity is high (CVSS 7.8). In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix a vulnerability of integer overflow in kfd debugger get_queue_ids() computes array_size = num_queues * sizeof(uint32_t), which could overflow on 32-bit si

Q: How urgent is CVE-2026-63881?

Priority 34/100. High severity; On your watchlist

Routine

HIGH 7.8WATCHLISTUPGRADE

CVE-2026-63881 is a high-severity flaw (CVSS 7.8) affecting linux kernel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix a vulnerability of integer overflow in kfd debugger get_queue_ids() computes array_size = num_queues * sizeof(uint32_t), which could overflow on 32-bit size_t build. using array_size() instead, it saturates to SIZE_MAX on overflow. (cherry picked from commit 2d57a0475f085c08b49312dfd8edcb461845f285)

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-190
Published	2026-07-19
Last modified	2026-10-26

Publisher (CNA): kernel.org · Vendor: linux

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-19 16:17 UTCPublished CVE record published
2026-10-26 20:13 UTCUpdated Record last modified

linux linux kernel UPGRADE

Affected: >= 6.5 and < 6.6.143 · >= 6.7 and < 6.12.93 · >= 6.13 and < 6.18.35 · >= 6.19 and < 7.0.12 · 7.1 rc1 · 7.1 rc2 · 7.1 rc3 · 7.1 rc4

Fixed in: 6.6.143, 6.12.93, 6.18.35, 7.0.12

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-63881?

linux kernel: upgrade to 6.6.143, 6.12.93, 6.18.35, 7.0.12. Exact commands for each OS are on this page.

Is CVE-2026-63881 being exploited?

CVE-2026-63881 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-63881 affect?

CVE-2026-63881 affects linux kernel. Severity is high (CVSS 7.8). In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix a vulnerability of integer overflow in kfd debugger get_queue_ids() computes array_size = num_queues * sizeof(uint32_t), which could overflow on 32-bit si

How urgent is CVE-2026-63881?

Priority 34/100. High severity; On your watchlist

Software pages

Linux kernel vulnerabilities

Related CVEs

CVE-2026-63893 HIGH 8.1 UPGRADE In the Linux kernel, the following vulnerability has been resolved: thunderbolt: property: Reject u32 wrap in
CVE-2026-63888 CRITICAL 9.8 UPGRADE In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix CRC overread and
CVE-2026-63885 HIGH 8.8 UPGRADE In the Linux kernel, the following vulnerability has been resolved: drm/gem: fix race between change_handle a
CVE-2026-63884 HIGH 7.8 UPGRADE In the Linux kernel, the following vulnerability has been resolved: drm/i915: Fix potential UAF in TTM object
CVE-2026-63879 HIGH 7.8 UPGRADE In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix amdgpu_hmm_range_get_page

References

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