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CVE-2026-80797— nfc: pn533: purge fragmented skbs during cleanup

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.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于PN533驱动在清理过程中未释放fragment_skb，可能导致内存泄漏。

AI Predicted 3.6 Difficulty: Hard EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 963a82e07d4e1f95fc423d53912ac0a7fe643b1c< 130b5ad4492f8e53d0398ee3af2b0e2388504d11 affected
963a82e07d4e1f95fc423d53912ac0a7fe643b1c< 9319c3c4962efc8697246b563ea31c6d47f085aa affected
963a82e07d4e1f95fc423d53912ac0a7fe643b1c< d63e85c5d5555fe6aa65155d3a09452597e163c3 affected
963a82e07d4e1f95fc423d53912ac0a7fe643b1c< 4a52ec2457ff8c26206fcc20fa1972cc35a678c4 affected
963a82e07d4e1f95fc423d53912ac0a7fe643b1c< e169277281373818ae1cedf976aa1e99118fb77d affected
963a82e07d4e1f95fc423d53912ac0a7fe643b1c< 2f5d093194ec24d7c29b91bf7df014924e0f4ea1 affected
963a82e07d4e1f95fc423d53912ac0a7fe643b1c< e7ed2ea5590fbe2d3be39ee4fb0c758a12e31d0c affected
963a82e07d4e1f95fc423d53912ac0a7fe643b1c< e95beff58b38c871c557bf84e528408283c2c0ad affected
… +12 more rows
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I. Basic Information for CVE-2026-80797

Vulnerability Information
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Vulnerability Title
nfc: pn533: purge fragmented skbs during cleanup
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: purge fragmented skbs during cleanup pn53x_common_clean() purges resp_q before freeing the common PN533 state, but it leaves fragment_skb untouched. The fragmentation helpers queue transmit fragments there while sending large initiator or target-mode frames, and those skbs remain owned by the driver until they are sent or discarded. If the device is removed while fragments are still queued, the common cleanup path frees the PN533 state without releasing the queued fragment skbs, leaking them. Purge fragment_skb during cleanup alongside resp_q.
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
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于PN533驱动在清理过程中未释放fragment_skb，可能导致内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 963a82e07d4e1f95fc423d53912ac0a7fe643b1c ~ 130b5ad4492f8e53d0398ee3af2b0e2388504d11 -
Linux Linux 3.12 -

II. Public POCs for CVE-2026-80797

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III. Intelligence Information for CVE-2026-80797

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Patches & Fixes for CVE-2026-80797 (7)

Other References for CVE-2026-80797 (2)

Same Patch Batch · Linux · 2026-09-04 · 156 CVEs total

CVE-2026-80865 bpf: Add missing access_ok call to copy_user_syms
CVE-2026-80856 fuse: fix invalidate lock leak on setattr writeback failure
CVE-2026-80857 fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free
CVE-2026-80858 fuse: publish io-uring queues with release semantics
CVE-2026-80859 fuse: fix missing barrier when checking io-uring readiness
CVE-2026-80860 fuse: fix race between interrupt and resend
CVE-2026-80861 usb: xhci: bail out of setup if the controller is inaccessible
CVE-2026-80862 nvme-tcp: fix usage of page_frag_cache
CVE-2026-80863 RDMA/rxe: Fix OOB in free_rd_atomic_resources()
CVE-2026-80864 RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp
CVE-2026-80870 drm/amdkfd: Validate CRIU-restored IDs before idr_alloc
CVE-2026-80874 arm64: dts: renesas: ironhide: Describe inline ECC carveouts
CVE-2026-80873 KVM: arm64: nv: Write ESR_EL2 for injected nested SError exceptions
CVE-2026-80872 ALSA: hda/tas2781: Cancel async firmware request at unbind
CVE-2026-80871 crypto: xilinx-trng - Remove crypto_rng interface
CVE-2026-80868 ntfs3: Allocate iomap inline_data using alloc_page
CVE-2026-80866 tipc: avoid busy looping in tipc_exit_net()
CVE-2026-80867 alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
CVE-2026-80855 fuse: fix invalidate lock leak on open O_TRUNC DAX failure
CVE-2026-80869 ntfs: bound the attribute-list entry in ntfs_read_inode_mount()

Showing top 20 of 156 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80797

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