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CVE-2026-93190— platform/chrome: cros_ec_typec: Reject out-of-bounds PD cap count

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，以下漏洞已得到解决： 平台/chrome: cros_ec_typec: 拒绝越界的 PD 能力数量 在 中，代码将来自 EC 的 响应中的伙伴 PDO 复制到固定大小的 数组中： 其中， 的值为 7。 和 是来自 EC 的 u8 类型字段。当前代码仅检查这两个计数不为零。如果任一计数大于 7， 会写入栈上数组的末尾之外。若计数为 255，将超出约 1 KB 的空间。此外，EC 的源数组本身仅包含 7 个条目，较大的计数值也会导致从这些数组中越界读取。 目前，ChromeOS 的 EC 固件

CVSS 8.4 · High EPSS 0.17% · P7

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 348a2e8c93d3ca622cf1b293cd2f597c9db74d9d< 7617b210a2200b76d8f171819390468c7d189c80 affected
348a2e8c93d3ca622cf1b293cd2f597c9db74d9d< 4e37371cb4e3b8ff564d7760029236a7bd614562 affected
348a2e8c93d3ca622cf1b293cd2f597c9db74d9d< 2a7a4e45a3aa4f4ef7013eb64649f6184b76a293 affected
348a2e8c93d3ca622cf1b293cd2f597c9db74d9d< e4728288473a5024a8bdba7d43f346719606fea0 affected
348a2e8c93d3ca622cf1b293cd2f597c9db74d9d< 54d6b0ee9b8ba434089b11843effc111dc2e6ead affected
348a2e8c93d3ca622cf1b293cd2f597c9db74d9d< a0a8cd9fc9c48b95095bcec4b146f7a99486f58e affected
6.1 affected
< 6.1 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-93190

Vulnerability Information
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Vulnerability Title
platform/chrome: cros_ec_typec: Reject out-of-bounds PD cap count
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: platform/chrome: cros_ec_typec: Reject out-of-bounds PD cap count cros_typec_register_partner_pdos() copies the partner PDOs from the EC TYPEC_STATUS response into the fixed caps_desc.pdo[PDO_MAX_OBJECTS] array. memcpy(caps_desc.pdo, resp->source_cap_pdos, sizeof(u32) * resp->source_cap_count); ... memcpy(caps_desc.pdo, resp->sink_cap_pdos, sizeof(u32) * resp->sink_cap_count); PDO_MAX_OBJECTS is 7. source_cap_count and sink_cap_count are u8 fields from the EC. The only check is that they are not both zero. If either is larger than 7, the memcpy writes past the end of the array on the stack. A count of 255 overflows it by about 1 KB. The EC source arrays are only seven entries wide. A larger count reads past them too. The ChromeOS EC firmware caps these counts today, so a compliant setup does not hit this. The kernel should still validate these values rather than trust them. Validate the counts in cros_typec_register_partner_pdos() next to the memcpy. Skip the PDO registration if either count is above PDO_MAX_OBJECTS. The rest of cros_typec_handle_status() still runs so events are handled and cleared.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 348a2e8c93d3ca622cf1b293cd2f597c9db74d9d ~ 7617b210a2200b76d8f171819390468c7d189c80 -
Linux Linux 6.1 -

II. Public POCs for CVE-2026-93190

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III. Intelligence Information for CVE-2026-93190

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Patches & Fixes for CVE-2026-93190 (6)

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-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
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-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90286 8.8 HIGH drm/amdgpu/gfx6: Use PFP on the compute queues too
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90162 8.8 HIGH ksmbd: defer publishing granted locks to prevent UAF/double-free race
CVE-2026-90255 8.8 HIGH Bluetooth: hci_conn: fix the SCO setup context lifetime
CVE-2026-90371 8.8 HIGH wifi: mt76: fix RXDMAD_C buffer recycling race
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()

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

IV. Related Vulnerabilities

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V. Comments for CVE-2026-93190

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