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CVE-2026-93234— drm/gud: validate TV mode names before creating enum property

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： drm/gud：在创建枚举属性前验证 TV 模式名称 GUD 协议将 TV 模式名称以固定大小 的条目返回，并要求每个名称必须以 NUL（空字符）结尾。 目前， 函数将每个固定大小的条目直接传递给 ，该函数最终会调用 和 。如果设备返回的条目未包含终止用的 NUL 字节， 将会越界读取超出该槽位末尾的数据，从而可能超出已分配缓冲区的边界，触发越界读取（out-of-bounds read）。 在将返回的 TV 模式名称传递给 DRM 属性代码之前，需验证每个名称在其固定大小

AI Predicted 6.5 Difficulty: Moderate EPSS 0.21% · P10

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 40e1a70b4aedf2859a1829991b48ef0ebe650bf2< 676f1fb3632bbc9ce83be7938e93fe6bfc9510fd affected
40e1a70b4aedf2859a1829991b48ef0ebe650bf2< 06fcaf21c18ac88f57fee3803554f48c6026b95f affected
40e1a70b4aedf2859a1829991b48ef0ebe650bf2< 082e378886547b5b1c4075ed307f7c68547868dc affected
40e1a70b4aedf2859a1829991b48ef0ebe650bf2< 70cffc31a380b3eae45027101647aa94c242aa0e affected
40e1a70b4aedf2859a1829991b48ef0ebe650bf2< 72a95df6bbc7d20c7af1e39d86b3e910cccd01ad affected
40e1a70b4aedf2859a1829991b48ef0ebe650bf2< eab46d9629807db1b5647d17227e16110a18227f affected
40e1a70b4aedf2859a1829991b48ef0ebe650bf2< da1ea35fea67ad841f4ada28dd61b41be65e5437 affected
5.13 affected
… +8 more rows
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I. Basic Information for CVE-2026-93234

Vulnerability Information
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Vulnerability Title
drm/gud: validate TV mode names before creating enum property
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/gud: validate TV mode names before creating enum property The GUD protocol returns TV mode names as fixed-size GUD_CONNECTOR_TV_MODE_NAME_LEN entries and requires each name to be NUL-terminated. gud_connector_add_tv_mode() currently passes each fixed-size entry directly to drm_mode_create_tv_properties_legacy(), which eventually reaches drm_property_add_enum() and strlen(). If a device returns an entry without a terminating NUL byte, strlen() reads past the end of the slot and can run beyond the allocated buffer, triggering an out-of-bounds read. Validate that each returned TV mode name contains a NUL terminator within its fixed-size slot before passing it to the DRM property code. If a malformed entry is found, reject the device response with -EIO. This fixes the out-of-bounds read without changing the handling of valid devices, and avoids silently truncating malformed protocol data.
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 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 ~ 676f1fb3632bbc9ce83be7938e93fe6bfc9510fd -
Linux Linux 5.13 -

II. Public POCs for CVE-2026-93234

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III. Intelligence Information for CVE-2026-93234

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Patches & Fixes for CVE-2026-93234 (7)

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-2026-93280 8.8 HIGH greybus: audio: bound the topology section sizes against the fetched size
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-2026-97452 8.4 HIGH ACPICA: Prevent adding invalid references
CVE-2026-97455 8.4 HIGH ACPICA: Fix use-after-free in acpi_ds_terminate_control_method()
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-2026-93221 8.1 HIGH nfsd: convert nfsd_net boolean flags to unsigned long flags word
CVE-2026-93786 8.1 HIGH ksmbd: preserve VFS inherited POSIX ACL mask

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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