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CVE-2026-80812— ALSA: dummy: Check card index validity at probe

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ALSA dummy驱动在探测时未验证声卡索引有效性，盲目信任给定的devptr->id值，可能导致越界访问。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.18% · P7

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 6e65c1cc4458b2784224759b6137a50d4f65e610< b7579e86afcec932e169d10e2d603abed8dd2fdf affected
6e65c1cc4458b2784224759b6137a50d4f65e610< 4d0892a90b57f0e89b274c3f3c51c2fa17937c88 affected
6e65c1cc4458b2784224759b6137a50d4f65e610< b20eb7ecbdaa3e649023fe41b177d90983ffb487 affected
6e65c1cc4458b2784224759b6137a50d4f65e610< c9f10a001c243d1f069ebb0e2f4999ad4043a254 affected
6e65c1cc4458b2784224759b6137a50d4f65e610< f20c2c32ec1c5c3526f29a03b487c55a5890996c affected
6e65c1cc4458b2784224759b6137a50d4f65e610< 3dba0e92e18980cb5a4d70a9a263539ae4f0c7ec affected
6e65c1cc4458b2784224759b6137a50d4f65e610< 690b721b9595f9a43395fd4047a832c42b5b6078 affected
6e65c1cc4458b2784224759b6137a50d4f65e610< 02442d5fe8ee365a084b055d4fa81a0c1abfc3fd affected
… +10 more rows
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I. Basic Information for CVE-2026-80812

Vulnerability Information
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Vulnerability Title
ALSA: dummy: Check card index validity at probe
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: dummy: Check card index validity at probe snd_dummy_probe() blindly trusts that the given devptr->id value is within the proper card index range. It's OK for the devices the driver itself creates at the module probe time, but if the device is bound manually via sysfs interface, this could be -1 as "none", and this leads to OOB access for index[] and other parameters. Add a sanity check for the card index and warn/correct it if it's a value out of the range.
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ALSA dummy驱动在探测时未验证声卡索引有效性，盲目信任给定的devptr->id值，可能导致越界访问。
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 6e65c1cc4458b2784224759b6137a50d4f65e610 ~ b7579e86afcec932e169d10e2d603abed8dd2fdf -
Linux Linux 2.6.16 -

II. Public POCs for CVE-2026-80812

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III. Intelligence Information for CVE-2026-80812

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Patches & Fixes for CVE-2026-80812 (5)

Other References for CVE-2026-80812 (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-2026-80812

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