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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，以下漏洞已得到修复： nfc: pn533: 修复 pn533_acr122_is_rx_frame_valid() 中的越界读取（OOB read）问题 该函数直接从 USB 响应帧中读取 frame->ccid.datalen，并在未进行任何校验的情况下将其作为索引用于访问 frame->data[]。恶意设备或故障设备可将该字段设置为任意值，导致驱动程序读取远超接收缓冲区范围的数据。 修复方案：在使用该字段之前，将 ccid.datalen 限制在 ACR122 帧的最大可能尺寸之内。

AI Predicted 8.8 Difficulty: Moderate

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc< 8db3b1e012a8b25078dfa1efabe3d0cd2916dcba affected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc< 74b3fbc60907ee97e3af3249091f57351b53a6d6 affected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc< 8a0f1bb790d964893db7fc59febda9a534db07b3 affected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc< ea82b7576793219fa10a8b545f8338998b2a9ce2 affected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc< 72b8b2126e854d6756a1aa4bdc66d7457b832294 affected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc< e72cbedc4596e808d22dd2b9fff666ece76f8dd6 affected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc< 2450a388367231fb7dd798538f393af227c00c4d affected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc< b61732f47316d45f27706db7812950145d3327b5 affected
… +10 more rows
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I. Basic Information for CVE-2026-98575

Vulnerability Information
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Vulnerability Title
nfc: pn533: fix OOB read in pn533_acr122_is_rx_frame_valid()
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc ~ 8db3b1e012a8b25078dfa1efabe3d0cd2916dcba -
Linux Linux 4.7 -

II. Public POCs for CVE-2026-98575

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III. Intelligence Information for CVE-2026-98575

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Other References for CVE-2026-98575 (8)

Same Patch Batch · Linux · 2026-10-18 · 436 CVEs total

CVE-2026-98583 nfc: nfcmrvl: validate helper command length before pull
CVE-2026-98568 vxlan: use one headroom snapshot for neighbour replies
CVE-2026-98570 net: ipv6: keep room for the mac header in dst_dev_overhead()
CVE-2026-98571 net: stmmac: clear stale buf->page after recycling on skb build failure
CVE-2026-98572 bpf: Fix immediate JMP JEQ/JNE on MIPS32
CVE-2026-98573 net: skbuff: fix pull-bound underflow in skb_checksum_setup_ipv6()
CVE-2026-98574 net: bcmgenet: stop Tx NAPI before disabling the queues
CVE-2026-98576 nfc: llcp: fix slab-out-of-bounds reads when logging service names
CVE-2026-98577 nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()
CVE-2026-98578 nfc: st21nfca: validate ISO15693 inventory length
CVE-2026-98579 nfc: llcp: fix sdreq TLV list leak on parse/alloc/send failure
CVE-2026-98580 nfc: llcp: Fix race condition in accept_queue lifecycle
CVE-2026-98581 nfc: llcp: Fix list corruption / refcount desync in nfc_llcp_recv_dm()
CVE-2026-98582 nfc: st21nfca: validate received frame size
CVE-2026-98594 tg3: clean up PHYLIB resources on probe failure
CVE-2026-98591 bpf: Fix bounds check for skb-backed dynptrs
CVE-2026-98592 net: spacemit: clear TX descriptor on fragment mapping failure
CVE-2026-98593 s390/debug: Fix NULL pointer dereference in debug_info_copy()
CVE-2026-98590 bpf: Fix bpf_sock context code generation
CVE-2026-98595 udp: remove a disconnected socket from the 4-tuple hash table

Showing top 20 of 436 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98575

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