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

CVE-2026-98575: nfc: pn533: fix OOB read in pn533_acr122_is_rx_frame_valid()

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 2450a388367231fb7dd798538f393af227c00c4d, 72b8b2126e854d6756a1aa4bdc66d7457b832294, 74b3fbc60907ee97e3af3249091f57351b53a6d6; 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 2450a388367231fb7dd798538f393af227c00c4d, 72b8b2126e854d6756a1aa4bdc66d7457b832294, 74b3fbc60907ee97e3af3249091f57351b53a6d6; 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: pn533: fix OOB read in pn533_acr122_is_rx_frame_valid() frame->ccid.datalen is read directly from the USB response frame and used, unchecked, as an index into frame->data[]. A malicious or malfunctioning device can set this field to an arbitrary value, causing the driver to read far outside the received buffer. Bound ccid.datalen against the maximum possible ACR122 frame size before using it. This replaces the existing datalen == 0 check, since datalen < 2 already covers that case and additionally rejects datalen == 1, which would still underflow the "datalen - 2" offset used below.

—No exploit Fix available
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%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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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

    • 4.7affected
    • 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and later · before 8db3b1e012a8b25078dfa1efabe3d0cd2916dcbaaffected · git
    • 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and later · before 74b3fbc60907ee97e3af3249091f57351b53a6d6affected · git
    • 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and later · before 8a0f1bb790d964893db7fc59febda9a534db07b3affected · git
    • 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and later · before ea82b7576793219fa10a8b545f8338998b2a9ce2affected · git
    • 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and later · before 72b8b2126e854d6756a1aa4bdc66d7457b832294affected · git
    • 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and later · before e72cbedc4596e808d22dd2b9fff666ece76f8dd6affected · git
    • 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and later · before 2450a388367231fb7dd798538f393af227c00c4daffected · git
    • 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and later · before b61732f47316d45f27706db7812950145d3327b5affected · git
    • before 4.7not affected · 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-2026-98573Oct 18, 2026 · net: skbuff: fix pull-bound underflow in skb_checksum_setup_ipv6()
    0Monitor
  • ← EarlierCVE-2026-98574Oct 18, 2026 · net: bcmgenet: stop Tx NAPI before disabling the queues
    0Monitor
  • Later →CVE-2026-98576Oct 18, 2026 · nfc: llcp: fix slab-out-of-bounds reads when logging service names
    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 Linux2450a388367231fb7dd798538f393af227c00c4dVendor (CNA)
Linux Linux72b8b2126e854d6756a1aa4bdc66d7457b832294Vendor (CNA)
Linux Linux74b3fbc60907ee97e3af3249091f57351b53a6d6Vendor (CNA)
Linux Linux8a0f1bb790d964893db7fc59febda9a534db07b3Vendor (CNA)
Linux Linux8db3b1e012a8b25078dfa1efabe3d0cd2916dcbaVendor (CNA)
Linux Linuxb61732f47316d45f27706db7812950145d3327b5Vendor (CNA)
Linux Linuxe72cbedc4596e808d22dd2b9fff666ece76f8dd6Vendor (CNA)
Linux Linuxea82b7576793219fa10a8b545f8338998b2a9ce2Vendor (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 5, 2026+18 d
EPSS, last 120 days

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

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

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

All national notices →

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.

Change log

  1. Exploit maturity— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

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

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