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CVE-2026-99182— ASoC: SOF: ipc4-topology: Fix shift-out-of-bounds for aggregated ALH capture

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: SOF: ipc4-topology：修复聚合 ALH 采集时的移位越界问题 当 小于 时（例如，跨多个 SDW 链路聚合的单声道采集流，如 SmartMic），计算 的结果会被截断为 0。随后调用 时， （类型为 u32）会发生下溢，变为 ，导致 内部移位操作使用了一个越界的指数，从而触发以下错误： 修复方案：将 的情况与现有的“通道数等于输出参考通道数”的情况同等处理，即为每个聚合设备应用相同的 ，而不是尝试分割无法均匀分配的通道。

AI Predicted 7.8 Difficulty: Hard

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 0390a102cc18cb7456d6c1f15ac51f1af90fcf9c< cad63a7798d6a6cac1fc68732595f0a3278ff6f0 affected
0390a102cc18cb7456d6c1f15ac51f1af90fcf9c< 5e1322787c5e424a570e87c8c2c25e37552cbe3b affected
0390a102cc18cb7456d6c1f15ac51f1af90fcf9c< 746de48c3a250f0c264105dcbfcdf0c5001e970b affected
6.3 affected
< 6.3 unaffected
6.18.59≤ 6.18.* unaffected
7.2.13≤ 7.2.* unaffected
7.3≤ * unaffected
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I. Basic Information for CVE-2026-99182

Vulnerability Information
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Vulnerability Title
ASoC: SOF: ipc4-topology: Fix shift-out-of-bounds for aggregated ALH capture
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: ipc4-topology: Fix shift-out-of-bounds for aggregated ALH capture When ch_count is smaller than blob->alh_cfg.device_count (e.g. a mono capture stream, such as a SmartMic, aggregated across multiple SDW links), step = ch_count / blob->alh_cfg.device_count truncates to 0. The subsequent GENMASK(step - 1, 0) then underflows step - 1 (u32) to UINT_MAX, causing GENMASK()'s internal shift to use an out-of-bounds exponent: UBSAN: shift-out-of-bounds in sound/soc/sof/ipc4-topology.c:2363:13 shift exponent 18446744069414584384 is too large for 64-bit type 'long unsigned int' Treat ch_count < device_count the same way as the existing "channels equal to output reference channels" case: apply the same ch_mask to every aggregated device instead of trying to split channels that can't be evenly divided.
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 0390a102cc18cb7456d6c1f15ac51f1af90fcf9c ~ cad63a7798d6a6cac1fc68732595f0a3278ff6f0 -
Linux Linux 6.3 -

II. Public POCs for CVE-2026-99182

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III. Intelligence Information for CVE-2026-99182

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Patches & Fixes for CVE-2026-99182 (3)

Same Patch Batch · Linux · 2026-10-28 · 117 CVEs total

CVE-2026-99143 tracing: Keep the predicate limit separate from program capacity
CVE-2026-99129 selinux: fix BPF token permission checks
CVE-2026-99130 io_uring/cancel: don't spin on local work the task can't run
CVE-2026-99131 xfs: fix capability check in xfs
CVE-2026-99133 net/iucv: fix the recvmsg window update
CVE-2026-99132 xfs: don't hold buffer locks across sync transaction commit in xfs_sync_sb_buf
CVE-2026-99134 mac802154: fix data race and NULL deref on local->assoc_dev
CVE-2026-99135 dm-integrity: fix infinite loop on discard with large tag size
CVE-2026-99137 cifs: don't update i_size in cifs_do_truncate without a cached handle
CVE-2026-99136 dm-crypt: fix a tiny race condition in crypt_dec_pending
CVE-2026-99138 tcp: fix use-after-free in do_tcp_getsockopt(TCP_CC_INFO)
CVE-2026-99140 tracing: Fix hist trigger timestamps for buffered events
CVE-2026-99139 tcp: fix use-after-free in do_tcp_getsockopt(TCP_CONGESTION)
CVE-2026-99141 tracing: Fix crash in print_graph_function_event()
CVE-2026-99142 tracing: Check operator stack capacity before pushing
CVE-2026-99154 scsi: libiscsi: Reject a negative task index from parse_pdu_itt
CVE-2026-99151 drm/amd/display: Fix NULL sink dereference in USB4 bandwidth functions
CVE-2026-99153 scsi: libiscsi: Validate the ITT reflected in a Reject PDU
CVE-2026-99152 scsi: libiscsi: Validate the task named by a management response
CVE-2026-99150 drm/amdgpu: don't drop the runtime PM reference twice in amdgpu_gpr

Showing top 20 of 117 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux