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CVE-2026-80969— ALSA: mpu401: 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.

在 Linux 内核中，以下漏洞已得到修复： ALSA: mpu401: 在探测阶段检查卡索引的有效性 mpu401 驱动在探测（probe）阶段盲目信任 的值处于有效的卡索引范围内。对于驱动在模块加载（probe）时自行创建的设备，这没有问题；但如果该设备是通过 sysfs 接口手动绑定的，其值可能为 -1（即“none”），这会导致对 及其他参数发生越界访问（OOB access）。 为此，增加了针对卡索引的合理性检查：如果索引值超出有效范围，则发出警告并进行纠正。

AI Predicted 7.0 Difficulty: Moderate

Affected Version Matrix 11

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 76b6bc38d0f310c0ae1b2a2ebabe2947d92c601a affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< cc4215cc2a4b2a9cf8b1952bbe8d5bf925acb3ea affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 8adda66edf795d4648f8e26f312e4414c535d25a affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< f7dcecb92ed192ff5fcf842918fb1aaea84b5bdd affected
< 6.12.109 affected
< 6.18.50 affected
< 7.2.4 affected
6.12.109≤ 6.12.* unaffected
… +3 more rows
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I. Basic Information for CVE-2026-80969

Vulnerability Information
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Vulnerability Title
ALSA: mpu401: 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: mpu401: Check card index validity at probe mpu401 driver blindly trusts that the given devptr->id value is within the proper card index range at probe. 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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ 76b6bc38d0f310c0ae1b2a2ebabe2947d92c601a -
Linux Linux 6.12.109 ~ 6.12.* -

II. Public POCs for CVE-2026-80969

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III. Intelligence Information for CVE-2026-80969

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Other References for CVE-2026-80969 (4)

Same Patch Batch · Linux · 2026-09-11 · 431 CVEs total

CVE-2026-89490 ocfs2: fix readdir position truncation on 32-bit kernels
CVE-2026-89478 sctp: drop a chunk if its transport was removed
CVE-2026-89479 sctp: stop processing a packet once its association is deleted
CVE-2026-89480 nvme-tcp: reject a read that transferred too few bytes
CVE-2026-89482 nvme-tcp: do not accept C2HData based on blk_rq_payload_bytes() alone
CVE-2026-89481 nvme-tcp: fix host memory disclosure on R2T for a read command
CVE-2026-89483 nvme: zero the discard fallback page
CVE-2026-89484 lockd: fix NULL dereference on lockowner allocation failure
CVE-2026-89485 lockd: pin next file across nlm_inspect_file lock-drop
CVE-2026-89486 ipmi: Fix use-after-free of cmd_rcvr in _ipmi_destroy_user()
CVE-2026-89487 openvswitch: only skb_tx_error() a packet we are about to drop
CVE-2026-89488 openvswitch: Fix CT limit teardown use-after-free
CVE-2026-89489 openrisc: fix arbitrary kernel memory access via or1k_atomic syscall
CVE-2026-89491 ocfs2: cluster: don't sleep while holding o2hb_live_lock in o2hb_region_pin()
CVE-2026-89501 ring-buffer: Hold cpu_buffer::lock when resizing a subbuf
CVE-2026-89498 orangefs: fix double-free of trailer_buf on readdir copy failure
CVE-2026-89499 ring-buffer: Stop remote reader update when page swap fails
CVE-2026-89500 ring-buffer: Make cpu_buffer::free_page a buffer_data_read_page
CVE-2026-89497 orangefs: skip leading spaces before parsing client debug masks
CVE-2026-89502 ring-buffer: Free cpu_buffer::free_page with subbuf_order

Showing top 20 of 431 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80969

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