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CVE-2026-98181— drm/gud: fix out-of-bounds write in gud_plane_atomic_check()

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，以下漏洞已修复： drm/gud: 修复 gud_plane_atomic_check() 中的越界写入问题 该平面属性循环在使用 作为写入索引的同时，还在循环内部递增 。在迭代 i 时， 实际上已经额外增加了 i，因此写入操作发生在 的位置，每次迭代跳过所有偶数索引并以步长 2 前进。 仅当拥有 2 个连接器和 32 个平面属性时，最后一次写入将发生在索引 64 处，这超出了 64 个槽位（索引 0–63）分配的末尾边界。USB 设备可通过通告最大数量的属性来触发越界写入（OOB）。 修复

AI Predicted 5.5 Difficulty: Moderate EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 40e1a70b4aedf2859a1829991b48ef0ebe650bf2< ee04903fe6a098160d20dde4fc5af4cb42846735 affected
40e1a70b4aedf2859a1829991b48ef0ebe650bf2< 4153a9e008f2512bd3cf90a319436865847369b9 affected
40e1a70b4aedf2859a1829991b48ef0ebe650bf2< 5f5e565410b4987e9663f599f9ab0c350f8338d4 affected
40e1a70b4aedf2859a1829991b48ef0ebe650bf2< 7e630edb22088df7aa0d55b02237a71e4c9a523d affected
40e1a70b4aedf2859a1829991b48ef0ebe650bf2< 2c92af27ad23e2fbc0367b11a9027d36d94ef4b3 affected
40e1a70b4aedf2859a1829991b48ef0ebe650bf2< ea57100955c1c2a525ba1a98c18d9a05b25aeedb affected
40e1a70b4aedf2859a1829991b48ef0ebe650bf2< 59ced288fcba9e91bd38e61a972ad782c4edb7d0 affected
5.13 affected
… +8 more rows
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I. Basic Information for CVE-2026-98181

Vulnerability Information
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Vulnerability Title
drm/gud: fix out-of-bounds write in gud_plane_atomic_check()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/gud: fix out-of-bounds write in gud_plane_atomic_check() The plane property loop uses req->properties[num_properties + i] as write index while simultaneously incrementing `num_properties` inside the loop. At iteration i, num_properties has also incremented by i, so the write is done at `initial_num_properties + 2*i`, skipping every other index and advancing by 2 per iteration. With just 2 connector and 32 plane properties the last write happens at index 64, one slot past the end of the 64-slot (indices 0–63) allocation. A USB device can trigger OOB by advertising the maximum number of properties. Fix by dropping the redundant `+ i`; num_properties is already the correct running index, as gud_connector_fill_properties() fills the preceding slots.
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 ~ ee04903fe6a098160d20dde4fc5af4cb42846735 -
Linux Linux 5.13 -

II. Public POCs for CVE-2026-98181

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III. Intelligence Information for CVE-2026-98181

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Patches & Fixes for CVE-2026-98181 (7)

Same Patch Batch · Linux · 2026-10-06 · 208 CVEs total

CVE-2026-98323 9.8 CRITICAL RDMA/siw: Bound fragmented header copies by the remaining length
CVE-2026-98365 9.8 CRITICAL RDMA/rxe: Fix integer overflow in mr_check_range() leading to OOB access
CVE-2026-98282 8.8 HIGH powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba
CVE-2026-98283 8.8 HIGH KVM: PPC: Book3S HV: fix use-after-free in kvmhv_emulate_tlbie_all_lpid()
CVE-2026-98339 8.8 HIGH wifi: cfg80211: don't filter by BSS type when removing stale entries
CVE-2026-98171 8.8 HIGH smb: client: fix next_buffer UAF and NextCommand bounds in compound PDUs
CVE-2026-98261 8.1 HIGH cifs: Fix server use-after-free in cifs_chan_skip_or_disable()
CVE-2026-98357 8.1 HIGH IB/isert: wait for deferred control PDU completions before releasing the connection
CVE-2026-98239 8.1 HIGH net: lan743x: fix RX checksum use-after-free
CVE-2026-98341 7.8 HIGH wifi: cfg80211: don't free driver-owned scan requests
CVE-2026-98324 7.8 HIGH dmaengine: pxa: fix double counting of the hw descriptors
CVE-2026-98228 7.8 HIGH mips: select CONFIG_WEAK_REORDERING_BEYOND_LLSC from CONFIG_EYEQ
CVE-2026-98229 7.8 HIGH xfrm: save input state data before secpath resets
CVE-2026-98320 7.8 HIGH netfilter: flowtable: hold reference on ct until flow is released
CVE-2026-98318 7.8 HIGH smb: client: validate absolute native symlink targets before NT fixups
CVE-2026-98315 7.8 HIGH ntfs: protect runlist updates with the runlist lock
CVE-2026-98260 7.8 HIGH exec: Cleanup POSIX timers right after de_thread()
CVE-2026-98256 7.8 HIGH signal: Prevent exec() race
CVE-2026-98258 7.8 HIGH posix-cpu-timers: Prevent freeing a timer which is queued on the expiry list
CVE-2026-98254 7.8 HIGH swiotlb: use the adjusted address for the highmem page lookup

Showing top 20 of 208 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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