What is CVE-2026-98633?

CVE-2026-98633 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 6.15 onward and patched in 6.18.55, 7.2.9 and 7.3. CVE-2026-98633 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-98633?

CVE-2026-98633 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-98633?

Yes, CVE-2026-98633 has been patched. Fixed versions include 6.18.55, 7.2.9 and 7.3. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-98633 actively exploited?

CVE-2026-98633 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-98633

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btnxpuart: Fix skb leak in nxp_process_fw_dump() When CONFIG_DEV_COREDUMP=n, hci_devcd_append() returns -EOPNOTSUPP without freeing its skb argument. This leaks the cloned skb and also prevents nxp_set_ind_reset() from being called to perform recovery. Fix by guarding the hci_devcd_append(hdev, skb_clone(skb, GFP_ATOMIC)) call with IS_ENABLED(CONFIG_DEV_COREDUMP).

Package Linux Kernel

Published 2026-10-18

Last modified 2026-10-18

Patch available

Yes

Affected versions

Linux kernel versions 6.15 and later are affected. Fixed in 6.18.55, 7.2.9, 7.3 and their respective stable series.

Affected from

≥ 6.15

Fixed in

✓ 6.18.55 6.18.x ✓ 7.2.9 7.2.x ✓ 7.3

References

3 total

Frequently asked questions

What is CVE-2026-98633?

CVE-2026-98633 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.15 onward and has been patched in 6.18.55, 7.2.9 and 7.3. CVE-2026-98633 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-98633?

Yes. CVE-2026-98633 has been patched. Fixed versions include 6.18.55, 7.2.9 and 7.3. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-98633 actively exploited?

No. CVE-2026-98633 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.