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CVE-2026-80783— HID: magicmouse: prevent unbounded recursion in magicmouse_raw_event()

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 2.6.37版本存在安全漏洞，该漏洞源于HID magicmouse驱动在处理DOUBLE_REPORT_ID数据包时未限制递归深度，可能导致恶意HID设备造成内核栈溢出，引发内核崩溃或内存破坏。

AI Predicted 5.0 Difficulty: Hard EPSS 0.19% · P9

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux a462230e16acc8664145216da3c928d03556691a< 26c45abed62536aabf4033fb6d64cf72e93374e9 affected
a462230e16acc8664145216da3c928d03556691a< 8a10a624996f16628234306b46f0cf36707d78bd affected
a462230e16acc8664145216da3c928d03556691a< d16df755b4493b6d37803c628b2c621d096796a8 affected
a462230e16acc8664145216da3c928d03556691a< bec338b07beb883726b32192c8f01c601bc76fda affected
a462230e16acc8664145216da3c928d03556691a< 70589b0c005db003f6d8ae4db3c4d54fed7b83e4 affected
a462230e16acc8664145216da3c928d03556691a< a33a596d3ad8dfe6c96a368097a028abeee16c17 affected
a462230e16acc8664145216da3c928d03556691a< d095de37f78c5f32a4252ef0f99b84ba76550b86 affected
a462230e16acc8664145216da3c928d03556691a< db8d634128d2ba88d79c0b601e983ebe14bb0519 affected
… +10 more rows
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I. Basic Information for CVE-2026-80783

Vulnerability Information
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Vulnerability Title
HID: magicmouse: prevent unbounded recursion in magicmouse_raw_event()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: prevent unbounded recursion in magicmouse_raw_event() magicmouse_raw_event() handles DOUBLE_REPORT_ID (0xf7) packets, which pack two touch reports into one, by splitting the packet and calling itself on each half. The only guard against runaway recursion is a "size < 1" check, which stops zero-sized calls but does not bound the recursion depth. A malicious HID device that matches this driver can send a report starting with DOUBLE_REPORT_ID and filled with the sequence [0xf7, 0x00]. Each level consumes two bytes and recurses on the remainder, so an incoming report of up to HID_MAX_BUFFER_SIZE (16 KiB) drives roughly 8000 nested calls. That easily exhausts the 16 KiB kernel stack, leading to a stack overflow: a panic with CONFIG_VMAP_STACK, or memory corruption without it. A double report only ever wraps two normal reports; it is never legitimately nested. Refuse to re-enter the DOUBLE_REPORT_ID case from a recursive call so the recursion depth is bounded to two, while all valid packets keep being parsed exactly as before.
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 2.6.37版本存在安全漏洞，该漏洞源于HID magicmouse驱动在处理DOUBLE_REPORT_ID数据包时未限制递归深度，可能导致恶意HID设备造成内核栈溢出，引发内核崩溃或内存破坏。
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 a462230e16acc8664145216da3c928d03556691a ~ 26c45abed62536aabf4033fb6d64cf72e93374e9 -
Linux Linux 2.6.37 -

II. Public POCs for CVE-2026-80783

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III. Intelligence Information for CVE-2026-80783

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Patches & Fixes for CVE-2026-80783 (7)

Other References for CVE-2026-80783 (1)

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-2026-80783

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