What is CVE-2026-98483?

CVE-2026-98483 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 5.10.188 onward and patched in 5.10.271, 5.15.222, 6.1.189 and others. CVE-2026-98483 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-98483?

CVE-2026-98483 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-98483?

Yes, CVE-2026-98483 has been patched. Fixed versions include 5.10.271, 5.15.222, 6.1.189 and others. If you are running Linux kernel 5.10.188 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-98483 actively exploited?

CVE-2026-98483 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-98483

In the Linux kernel, the following vulnerability has been resolved: nfc: fix use-after-free in nfc_get_local_general_bytes Commit 6709d4b7bc2e ("net: nfc: Fix use-after-free caused by nfc_llcp_find_local") attempted to fix a use-after-free (UAF) issue by invoking nfc_llcp_local_put(local) after accessing local->gb. However, if the reference count drops to zero, local is freed immediately, leading to a use-after-free when callers access the returned pointer. Alternative approaches using dynamic allocation (e.g. kmemdup) introduced memory leaks because callers consistently treat the returned pointer as borrowed memory. Fix this properly by refactoring nfc_llcp_general_bytes() and nfc_get_local_general_bytes() to accept a caller-provided output buffer (out_gb) and its maximum length (gb_max_len). The general bytes are safely copied into out_gb before calling nfc_llcp_local_put(local), ensuring safe lifetime management without ownership transfer complications. Update all callers across drivers (microread, pn533, pn544, st21nfca, digital_dep, and nci) to provide their own destination buffers and pass them to nfc_get_local_general_bytes().

Package Linux Kernel

Published 2026-10-18

Last modified 2026-10-18

Patch available

Yes

Affected versions

Linux kernel versions 5.10.188, 5.15.121, 6.1.39, 5.4.251, 6.3.13, 6.4.4, 6.5 and later are affected. Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.55, 7.2.9, 7.3 and their respective stable series.

Affected from

≥ 5.10.188 ≥ 5.15.121 ≥ 6.1.39 ≥ 5.4.251 ≥ 6.3.13 ≥ 6.4.4 ≥ 6.5

Fixed in

✓ 5.10.271 5.10.x ✓ 5.15.222 5.15.x ✓ 6.1.189 6.1.x ✓ 6.6.158 6.6.x ✓ 6.12.112 6.12.x ✓ 6.18.55 6.18.x ✓ 7.2.9 7.2.x ✓ 7.3

References

8 total

Showing 5 of 8 references View all on NVD

Frequently asked questions

What is CVE-2026-98483?

CVE-2026-98483 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.10.188 onward and has been patched in 5.10.271, 5.15.222, 6.1.189 and others. CVE-2026-98483 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-98483?

Yes. CVE-2026-98483 has been patched. Fixed versions include 5.10.271, 5.15.222, 6.1.189 and others. If you are running Linux kernel 5.10.188 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-98483 actively exploited?

No. CVE-2026-98483 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.