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CVE-2026-93280— greybus: audio: bound the topology section sizes against the fetched size

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，已修复以下漏洞： greybus: audio：将拓扑区域大小限制为实际获取的大小 函数会获取由模块提供的、大小为 的拓扑 blob；随后， 函数会通过将模块提供的 、 和 字段相加，计算出控制区、控件区和路由区的偏移量。然而，这些 类型的大小字段从未与已获取的 blob 进行校验。因此，如果模块报告一个较小的拓扑总大小，却提供较大的各分区大小，会导致计算出的偏移量超出分配内存的边界，从而在解析过程中发生越界读取。 在解析之前，拒绝那些分区大小超出已获取拓扑总大小的拓扑数据。

CVSS 8.8 · High EPSS 0.32% · P23

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 184992e305f1de3a3d5fa446da3a2bc76be7c54a< ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43e affected
184992e305f1de3a3d5fa446da3a2bc76be7c54a< dd5593aee0a0fb353e1164aff7b65e563fe1f232 affected
184992e305f1de3a3d5fa446da3a2bc76be7c54a< 6f764363b3173d805be11e59a8f23ecee2d420d5 affected
184992e305f1de3a3d5fa446da3a2bc76be7c54a< 52daf9de692ebac813d110eb1e677dc0e1f4a5ab affected
184992e305f1de3a3d5fa446da3a2bc76be7c54a< d0f6eaba60705bacd9bb4ce48eab50ef3f546777 affected
184992e305f1de3a3d5fa446da3a2bc76be7c54a< c9191f2e2f35f1209eb2dc24b31129dd47b48c16 affected
184992e305f1de3a3d5fa446da3a2bc76be7c54a< cfcc5a41a9664eb68023aae4cd0d485b256bd7c7 affected
184992e305f1de3a3d5fa446da3a2bc76be7c54a< 33d8c7b794d2a30637c9d3fcb478f1d3222bef1e affected
… +10 more rows
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I. Basic Information for CVE-2026-93280

Vulnerability Information
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Vulnerability Title
greybus: audio: bound the topology section sizes against the fetched size
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: greybus: audio: bound the topology section sizes against the fetched size gb_audio_gb_get_topology() fetches a topology blob of a module-supplied size, and gbaudio_tplg_parse_data() then walks it by adding the module-supplied size_dais, size_controls and size_widgets fields to form the control, widget and route section offsets. Those le32 sizes are never checked against the fetched blob, so a module reporting a small topology size but large section sizes makes the offsets point past the allocation, and parsing reads out of bounds. Reject a topology whose section sizes do not fit within the fetched size before it is parsed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 184992e305f1de3a3d5fa446da3a2bc76be7c54a ~ ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43e -
Linux Linux 4.9 -

II. Public POCs for CVE-2026-93280

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III. Intelligence Information for CVE-2026-93280

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Patches & Fixes for CVE-2026-93280 (8)

Same Patch Batch · Linux · 2026-09-24 · 234 CVEs total

CVE-2026-93207 9.8 CRITICAL SUNRPC: Zero rpc_gss_wire_cred at svcauth_gss_decode_credbody() entry
CVE-2026-97413 9.8 CRITICAL RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
CVE-2026-93228 9.1 CRITICAL svcrdma: Reject Write/Reply chunks with segcount 0
CVE-2026-93793 8.8 HIGH wifi: iwlwifi: mvm: validate TX_CMD response layout
CVE-2026-93799 8.8 HIGH wifi: iwlwifi: mvm: validate sta_id in BA window status notif
CVE-2026-93790 8.8 HIGH wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif
CVE-2026-93806 8.8 HIGH wifi: cfg80211: validate assoc response length before status and IE access
CVE-2026-97442 8.8 HIGH wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi
CVE-2026-97509 8.8 HIGH thunderbolt: Keep XDomain reference during the lifetime of a service
CVE-2026-97409 8.8 HIGH nvme-fc: Do not cancel requests in io target before it is initialized
CVE-2026-93284 8.8 HIGH drm/pagemap: dma-unmap pages before handling migration errors
CVE-2026-97451 8.4 HIGH ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)
CVE-2026-97455 8.4 HIGH ACPICA: Fix use-after-free in acpi_ds_terminate_control_method()
CVE-2026-97452 8.4 HIGH ACPICA: Prevent adding invalid references
CVE-2026-97450 8.4 HIGH ACPICA: validate handler object type in two places
CVE-2026-93827 8.4 HIGH virtio-fs: avoid double-free on failed queue setup
CVE-2026-97433 8.2 HIGH nvme: validate FDP configuration descriptor sizes
CVE-2026-93786 8.1 HIGH ksmbd: preserve VFS inherited POSIX ACL mask
CVE-2026-93221 8.1 HIGH nfsd: convert nfsd_net boolean flags to unsigned long flags word
CVE-2026-93224 8.1 HIGH svcrdma: Fix unmatched rn_unregister on failed accept

Showing top 20 of 234 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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