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CVE-2026-90225— nfc: llcp: read llcp_sock->local under the socket lock in getsockopt

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.

以下是该漏洞描述的中文翻译： 在 Linux 内核中，以下漏洞已得到修复： nfc: llcp: 在获取 sockopt 时在 socket 锁保护下读取 llcp_sock->local 函数原本在调用 之前读取了 ，并在锁定区域内解引用该缓存的指针。 而 函数在相同的 socket 锁保护下进行赋值和清空 ，并在其错误处理路径中释放该对象的最后一个引用。如果一个正在进行的 操作与 发生竞争，则 可能观察到该指针，随后在 上阻塞，而 在回滚（unwind）过程中已释放了 对象，导致后续解引用时发生释放后使用（Us

CVSS 7.8 · High EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7< 56fd158fef20268f48db6cdfe5d722e930134eda affected
26fd76cab2e61cedc5c25f7151fb31b57ddc53c7< 8ba8cec0586727cc135ca4827921fc7b52946d71 affected
26fd76cab2e61cedc5c25f7151fb31b57ddc53c7< ed5240bab3468988077fe8bf29b935eaecc9ff89 affected
26fd76cab2e61cedc5c25f7151fb31b57ddc53c7< fe65727a4a21b11c18eebae1338482767a897b76 affected
26fd76cab2e61cedc5c25f7151fb31b57ddc53c7< 2d8ac24565be85bf56580b87bf1b874d35625eb5 affected
26fd76cab2e61cedc5c25f7151fb31b57ddc53c7< 156e65bd29307f5053835bff60bc1ba342fa010f affected
26fd76cab2e61cedc5c25f7151fb31b57ddc53c7< d1b73962675cdc5a58e2707e25b548d8b495fde0 affected
26fd76cab2e61cedc5c25f7151fb31b57ddc53c7< 36812527052c5bfb1ec6c1e292d67a5bf76b750f affected
… +10 more rows
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I. Basic Information for CVE-2026-90225

Vulnerability Information
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Vulnerability Title
nfc: llcp: read llcp_sock->local under the socket lock in getsockopt
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: read llcp_sock->local under the socket lock in getsockopt nfc_llcp_getsockopt() read llcp_sock->local before lock_sock(sk) and then dereferenced the cached pointer inside the locked region. llcp_sock_bind() assigns and clears llcp_sock->local under the same socket lock, dropping the last reference on its error path. A getsockopt() racing an in-flight bind() can observe the pointer, block on lock_sock(), and then dereference a freed nfc_llcp_local once bind() has unwound. Move the llcp_sock->local read and the NULL check inside the lock_sock(sk) region so bind() cannot mutate or free the pointer between the load and the use.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 ~ 56fd158fef20268f48db6cdfe5d722e930134eda -
Linux Linux 3.10 -

II. Public POCs for CVE-2026-90225

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III. Intelligence Information for CVE-2026-90225

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Patches & Fixes for CVE-2026-90225 (8)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-90286 8.8 HIGH drm/amdgpu/gfx6: Use PFP on the compute queues too
CVE-2026-90379 8.8 HIGH wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90255 8.8 HIGH Bluetooth: hci_conn: fix the SCO setup context lifetime
CVE-2026-90371 8.8 HIGH wifi: mt76: fix RXDMAD_C buffer recycling race
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-90225

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