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CVE.org (no NVD analysis yet)· CNA Linux

CVE-2026-98483: nfc: fix use-after-free in nfc_get_local_general_bytes

—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 19bcfc2a56d0b82919079b5424c5a9a0ac897dcf, 25bfa673adc70189c0bc872940421ae59f789cf6, 2b31d0cc95856c856ada91f943fb14dfdf29a923; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 19bcfc2a56d0b82919079b5424c5a9a0ac897dcf, 25bfa673adc70189c0bc872940421ae59f789cf6, 2b31d0cc95856c856ada91f943fb14dfdf29a923; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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().

Published
Oct 18, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 12th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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  • A fix has been released

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Noroxi analysis

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • dd6ff3f3862709ab1a12566e73b9d6a9b8f6e548, b3ad46e155a6d91b36c6e892019a43e3ef3c696d, e5207c1d69b1a9707615ab6ff9376e59fc096815, 6.5affected
    • 96f2c6f272ec04083d828de46285a7d7b17d1aad and later · before 25bfa673adc70189c0bc872940421ae59f789cf6affected · git
    • fc8429f8d86801f092fbfbd257c3af821ac0dcd3 and later · before 2b31d0cc95856c856ada91f943fb14dfdf29a923affected · git
    • 425d9d3a92df7d96b3cfb7ee5c240293a21cbde3 and later · before c40f61a6a413f3eaf028e5fe367fd9749e503ab0affected · git
    • 6709d4b7bc2e079241fdef15d1160581c5261c10 and later · before 19bcfc2a56d0b82919079b5424c5a9a0ac897dcfaffected · git
    • 6709d4b7bc2e079241fdef15d1160581c5261c10 and later · before d8c929e9afdbc33b1876ecb97a517e850449b5bdaffected · git
    • 6709d4b7bc2e079241fdef15d1160581c5261c10 and later · before 841af260ff477f6191872bc3b2e15488615c1827affected · git
    • 6709d4b7bc2e079241fdef15d1160581c5261c10 and later · before 9ede11e12f965ace97c4e0f606667f24fb41e7e1affected · git
    • 6709d4b7bc2e079241fdef15d1160581c5261c10 and later · before dcab71a7011918f6fdba7adcec02d217dcb84b8daffected · git
    • 5.10.188 and later · before 5.10.271affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.9-17.2.9-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-98481Oct 18, 2026 · nfc: port100: reject frames whose declared length exceeds the received data
    0Monitor
  • ← EarlierCVE-2026-98482Oct 18, 2026 · nfc: llcp: drop truncated I/RR/RNR PDUs in nfc_llcp_recv_hdlc()
    0Monitor
  • Later →CVE-2026-98484Oct 18, 2026 · netfilter: nf_tables: skip expired catchall elements on insert and delete
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux19bcfc2a56d0b82919079b5424c5a9a0ac897dcfVendor (CNA)
Linux Linux25bfa673adc70189c0bc872940421ae59f789cf6Vendor (CNA)
Linux Linux2b31d0cc95856c856ada91f943fb14dfdf29a923Vendor (CNA)
Linux Linux5.10.271Vendor (CNA)
Linux Linux5.15.222Vendor (CNA)
Linux Linux5.5Vendor (CNA)
Linux Linux6.1.189Vendor (CNA)
Linux Linux6.4Vendor (CNA)
Linux Linux6.5Vendor (CNA)
Linux Linux841af260ff477f6191872bc3b2e15488615c1827Vendor (CNA)
Linux Linux9ede11e12f965ace97c4e0f606667f24fb41e7e1Vendor (CNA)
Linux Linuxc40f61a6a413f3eaf028e5fe367fd9749e503ab0Vendor (CNA)
Linux Linuxd8c929e9afdbc33b1876ecb97a517e850449b5bdVendor (CNA)
Linux Linuxdcab71a7011918f6fdba7adcec02d217dcb84b8dVendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.159.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.113-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 12, 2026+25 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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