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CVE-2026-93183— drm/lima: call drm_mm_init() with a valid allocation range

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/lima：使用有效的分配范围调用 drm_mm_init() 当前， 在 和 被设置之前运行，这意味着它们的值均为 0。 将这两个变量作为参数传递给分配器，并调用 。如果启用了 ， 中的 检查就会被触发。以下是在 exynos4412-odroid-u2 上观察到的示例日志： 修复方法：将 的调用移动到 和 设置之后，以确保传入 的参数是有效的非零分配范围，从而避免触发断言失败。

AI Predicted 5.5 Difficulty: Hard EPSS 0.21% · P12

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux a1d2a6339961efc078208dc3b2f006e9e9a8e119< af1f276d50c9d7ebcd25770f358ca503a89d96d7 affected
a1d2a6339961efc078208dc3b2f006e9e9a8e119< fd6bc5f1d6b54047b06b82bab25a7e21e4b1c95a affected
a1d2a6339961efc078208dc3b2f006e9e9a8e119< ad4e908096dff97646f77b04e2e2825225e215f7 affected
a1d2a6339961efc078208dc3b2f006e9e9a8e119< 788917ba77f5d69bd368c1d176ecceda346a2951 affected
a1d2a6339961efc078208dc3b2f006e9e9a8e119< 79a3331ee436c8b1454f897d539606c9b5ebdf9f affected
a1d2a6339961efc078208dc3b2f006e9e9a8e119< e2a7cee341986cb5b544a8286edc7fb0494c592e affected
a1d2a6339961efc078208dc3b2f006e9e9a8e119< e0773ad25a34a49aece176721c466cf214e02222 affected
a1d2a6339961efc078208dc3b2f006e9e9a8e119< 3b3bce4a692ac60d9f4a341e6b597dd1fd0a28f9 affected
… +10 more rows
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I. Basic Information for CVE-2026-93183

Vulnerability Information
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Vulnerability Title
drm/lima: call drm_mm_init() with a valid allocation range
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/lima: call drm_mm_init() with a valid allocation range lima_vm_create() is currently run before va_start and va_end are set up, meaning they are both 0. lima_vm_create() runs drm_mm_init() with them as arguments for the allocator, and if DRM_DEBUG_MM is enabled the DRM_MM_BUG_ON check in drm_mm_init then fires, as seen here on exynos4412-odroid-u2: [ 1.736297] ------------[ cut here ]------------ [ 1.740370] kernel BUG at drivers/gpu/drm/drm_mm.c:931! [ 1.745574] Internal error: Oops - BUG: 0 [#1] SMP ARM [ 1.750697] Modules linked in: [ 1.753734] CPU: 0 UID: 0 PID: 41 Comm: kworker/u16:1 Not tainted 7.0.10-postmarketos-exynos4 #11 PREEMPT [ 1.763372] Hardware name: Samsung Exynos (Flattened Device Tree) [ 1.769446] Workqueue: events_unbound deferred_probe_work_func [ 1.775261] PC is at drm_mm_init+0x9c/0xa4 [ 1.779339] LR is at lima_vm_create+0x144/0x17c [ ... ] Fix the issue by moving the lima_vm_create() call after va_start and va_end are set up.
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 a1d2a6339961efc078208dc3b2f006e9e9a8e119 ~ af1f276d50c9d7ebcd25770f358ca503a89d96d7 -
Linux Linux 5.2 -

II. Public POCs for CVE-2026-93183

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III. Intelligence Information for CVE-2026-93183

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Patches & Fixes for CVE-2026-93183 (8)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90425 8.8 HIGH iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90379 8.8 HIGH wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-90371 8.8 HIGH wifi: mt76: fix RXDMAD_C buffer recycling race

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93183

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