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CVE-2026-99208— drm/xe/oa: Zero OA buffer at allocation

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： drm/xe/oa：在分配时将 OA 缓冲区清零 ttm_bo_type_kernel 类型的缓冲区对象（BOs）在分配时并不保证会被清零，其中可能包含来自先前释放页面的残留数据。由于 OA 缓冲区可被用户空间通过 mmap 映射，这可能导致旧的内核内存内容被泄露。 使用 DRM_XE_OA_PROPERTY_OA_DISABLED 属性打开的流在分配 OA 缓冲区时，并未调用 xe_oa_init_oa_buffer() 函数。因此，需在分配时主动将缓冲区清零，以防止

AI Predicted 5.5 Difficulty: Moderate

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 392bf22238ff88506f410c464ba0c7a84e9de471< 21f41b6daf0dbe2cdaaf9f54af6e23fd3c9190b9 affected
392bf22238ff88506f410c464ba0c7a84e9de471< cd3e2918c247db631d88cdd704596d9d27e5513e affected
392bf22238ff88506f410c464ba0c7a84e9de471< fd8662823caa114a63f07222d2aa448f6ac5e864 affected
6.11 affected
< 6.11 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-2026-99208

Vulnerability Information
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Vulnerability Title
drm/xe/oa: Zero OA buffer at allocation
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/xe/oa: Zero OA buffer at allocation ttm_bo_type_kernel BOs are not guaranteed to be zeroed on allocation and may contain data from previously freed pages. Since the OA buffer is mmap'able by userspace, this can expose stale kernel memory contents. Streams opened with DRM_XE_OA_PROPERTY_OA_DISABLED allocate the OA buffer without calling xe_oa_init_oa_buffer(). Zero the buffer at allocation to prevent information disclosure through mmap. The existing zeroing in xe_oa_init_oa_buffer() remains necessary for zero report-id/timestamp detection on enable/re-enable. (cherry picked from commit 126c4c5388f9311a390b9b254a835b0cf0f55331)
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 392bf22238ff88506f410c464ba0c7a84e9de471 ~ 21f41b6daf0dbe2cdaaf9f54af6e23fd3c9190b9 -
Linux Linux 6.11 -

II. Public POCs for CVE-2026-99208

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III. Intelligence Information for CVE-2026-99208

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Patches & Fixes for CVE-2026-99208 (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