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CVE-2026-80759— Bluetooth: hci_aml: validate firmware segment lengths

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 6.12版本存在安全漏洞，该漏洞源于Bluetooth hci_aml驱动中的aml_download_firmware()函数在检查固件头和数据段之前，从固件头读取两个长度值并用于构建指针，截断或不一致的固件镜像可能导致驱动在构造TCI命令时越界读取固件数据。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1079

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 37bac77e4649e8158698a60addc22ec4faf5649a< 7733b01ed13685773ccda91035a46f87d4cfef7c affected
37bac77e4649e8158698a60addc22ec4faf5649a< e1534d49a7b8ba728e84b020f6d802aa1cb759d9 affected
37bac77e4649e8158698a60addc22ec4faf5649a< 6c70253462902d835e843b470f74aa816d60af80 affected
37bac77e4649e8158698a60addc22ec4faf5649a< 2763b8bcb504e30ec955474f51b99ce42fc62f3b affected
37bac77e4649e8158698a60addc22ec4faf5649a< 2bf6b9baca9372ea51b6d0f2820dc9bf29a83ef4 affected
6.12 affected
< 6.12 unaffected
6.12.106≤ 6.12.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-80759

Vulnerability Information
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Vulnerability Title
Bluetooth: hci_aml: validate firmware segment lengths
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_aml: validate firmware segment lengths aml_download_firmware() reads two lengths from the firmware header and uses them to build pointers before checking that the header and segment data are present. A truncated or inconsistent firmware image can make the driver read past firmware->data while constructing TCI commands. Reject images shorter than the header and ensure that the ICCM and DCCM ranges fit within the loaded firmware before downloading either segment.
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 6.12版本存在安全漏洞，该漏洞源于Bluetooth hci_aml驱动中的aml_download_firmware()函数在检查固件头和数据段之前，从固件头读取两个长度值并用于构建指针，截断或不一致的固件镜像可能导致驱动在构造TCI命令时越界读取固件数据。
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 37bac77e4649e8158698a60addc22ec4faf5649a ~ 7733b01ed13685773ccda91035a46f87d4cfef7c -
Linux Linux 6.12 -

II. Public POCs for CVE-2026-80759

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III. Intelligence Information for CVE-2026-80759

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Patches & Fixes for CVE-2026-80759 (5)

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

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