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CVE-2026-90068— ASoC: dapm: Fix off-by-one check on the second enum channel

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： ASoC: dapm: 修复第二个枚举通道的差一（off-by-one）检查 函数在 达到 时会将其拒绝，但却允许 等于该边界值。这两个参数随后都会传入 函数，而该函数在没有自身边界检查的情况下直接用其索引 数组，导致当枚举项带有值表（value table）时，会越界读取一个元素（即读取到数组末尾之后）。 这一索引逻辑是在 MUX 整合（consolidation）时引入的，当时在同一代码块中放宽了 的检查。被删除的旧版 MUX 值处理器原本使用 进行比较，而 中的

AI Predicted 4.4 Difficulty: Hard EPSS 0.21% · P11

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 3727b4968453dbab8fe18f979d67285eb6b66801< 57ab955bde747327fb2042516ae1b7192c30e881 affected
3727b4968453dbab8fe18f979d67285eb6b66801< 806fa4e1f2bf73c54bc4b6360790ecc69d095ca5 affected
3727b4968453dbab8fe18f979d67285eb6b66801< 496081b4edc1f6e662418831c5b14cddd8d7920c affected
3727b4968453dbab8fe18f979d67285eb6b66801< faf539af1a595a26e5a081a4e512caee2bc2f4c5 affected
3727b4968453dbab8fe18f979d67285eb6b66801< 32fc048391112559c34cb88d13594546939a4cd6 affected
3727b4968453dbab8fe18f979d67285eb6b66801< 10a36512c21f861a03fba461a7ead09023df9c1b affected
3727b4968453dbab8fe18f979d67285eb6b66801< 55126ef66298e43c69f192acebae8c7cc0022cf6 affected
3727b4968453dbab8fe18f979d67285eb6b66801< 14511c9b54ceeeef487409d73947c89ee8563590 affected
… +10 more rows
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I. Basic Information for CVE-2026-90068

Vulnerability Information
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Vulnerability Title
ASoC: dapm: Fix off-by-one check on the second enum channel
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ASoC: dapm: Fix off-by-one check on the second enum channel The snd_soc_dapm_put_enum_double() rejects item[0] once it reaches e->items, but it lets item[1] be equal to it. Both go on to snd_soc_enum_item_to_val(), which indexes e->values with no bound of its own, so an enum with a value table reads one element past the end. The indexing arrived with the MUX consolidation, which relaxed the item[1] check in the same hunk. The value MUX handler it deleted used >= there, and the snd_soc_put_enum_double() in soc-ops.c still does. Only adav80x pairs a value table with two shifts, and its second channel looks accidental, but the control does report two values. Writing three into it reads off the end of adav80x_mux_values. The core catches that only under CONFIG_SND_CTL_INPUT_VALIDATION, which defaults off.
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 3727b4968453dbab8fe18f979d67285eb6b66801 ~ 57ab955bde747327fb2042516ae1b7192c30e881 -
Linux Linux 3.15 -

II. Public POCs for CVE-2026-90068

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III. Intelligence Information for CVE-2026-90068

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Patches & Fixes for CVE-2026-90068 (8)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-90162 8.8 HIGH ksmbd: defer publishing granted locks to prevent UAF/double-free race
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90371 8.8 HIGH wifi: mt76: fix RXDMAD_C buffer recycling race
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-90425 8.8 HIGH iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID
CVE-2026-90240 8.8 HIGH iommu/vt-d: Flush context cache with correct SID when tearing down aliases
CVE-2026-90379 8.8 HIGH wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind

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IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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