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CVE-2026-93199— i3c: master: Do not treat master device as a duplicate target

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： i3c: 主控：不应将主控设备视为重复的目标设备 i3c_master_search_i3c_dev_duplicate() 函数用于在总线上搜索与参考设备具有相同 PID 的其他 I3C 设备。该搜索可能会匹配到 master->this（即当前主控设备自身），从而导致控制器本身被错误地返回为一个“重复”设备。 由于控制器并非目标（target）设备，因此它不可能是某个目标设备的重复项。为避免此问题，应排除对 master->this 的匹配，确保该函数仅返回真正重复

AI Predicted 3.9 Difficulty: Hard

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0< d0cc00957292e353ad46039034cd8f82fc4f8057 affected
3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0< 150e71808d3715a0deefbb189c780d03fdbdc735 affected
3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0< 4dc1b3eeba7991905a5b5b8129ebea51be7d87b7 affected
5.0 affected
< 5.0 unaffected
6.18.52≤ 6.18.* unaffected
7.2.6≤ 7.2.* unaffected
7.3-rc1≤ * unaffected
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I. Basic Information for CVE-2026-93199

Vulnerability Information
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Vulnerability Title
i3c: master: Do not treat master device as a duplicate target
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: i3c: master: Do not treat master device as a duplicate target i3c_master_search_i3c_dev_duplicate() searches the bus for another I3C device with the same PID as the reference device. The search can match master->this, causing the controller itself to be returned as a duplicate. Since the controller is not a target device, it cannot be a duplicate of one. Exclude master->this from matching so that the function only returns real duplicate target devices.
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 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 ~ d0cc00957292e353ad46039034cd8f82fc4f8057 -
Linux Linux 5.0 -

II. Public POCs for CVE-2026-93199

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III. Intelligence Information for CVE-2026-93199

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Patches & Fixes for CVE-2026-93199 (2)

Other References for CVE-2026-93199 (1)

Same Patch Batch · Linux · 2026-09-17 · 602 CVEs total

CVE-2026-90255 Bluetooth: hci_conn: fix the SCO setup context lifetime
CVE-2026-90238 media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
CVE-2026-90240 iommu/vt-d: Flush context cache with correct SID when tearing down aliases
CVE-2026-90239 media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
CVE-2026-90241 iommu/vt-d: Tear down scalable-mode context on probe failure
CVE-2026-90243 iommu/vt-d: Clear Present bit before tearing down copied context entry
CVE-2026-90242 iommu/vt-d: Fix iopf_refcount leak on RID domain replacement
CVE-2026-90244 iommu/dma: Restore locking around msi_page_list
CVE-2026-90245 fbdev: kyro: Validate overlay viewport coordinates
CVE-2026-90246 apparmor: fix integer overflow in verify_tags() bounds check
CVE-2026-90247 bpf: Fix mmap_lock leak in irq_work path
CVE-2026-90248 net/sched: cls_api: fix teardown of an adopted proto on insert-race loss
CVE-2026-90249 iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes
CVE-2026-90250 bpf, cgroup: Fix storage null-ptr-deref after replacing prog
CVE-2026-90251 Bluetooth: MSFT: validate evt_prefix_len against the response length
CVE-2026-90253 Bluetooth: MGMT: free the mesh send cancel command when it is cancelled
CVE-2026-90252 Bluetooth: MGMT: free the HCI command when it is cancelled
CVE-2026-90254 Bluetooth: hci_sync: free the advertising instance on the failure and cancel paths
CVE-2026-90256 Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90268 scsi: sd: Fix error handling in sd_probe() after large pool creation failure

Showing top 20 of 602 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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