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CVE-2026-93141— usb: gadget: r8a66597: avoid double free of ep0_req in probe error path

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： usb: gadget: r8a66597：在 probe 错误路径中避免对 ep0_req 的重复释放 当 调用失败时， 会跳转到 标签，在此处释放了 ；随后代码会继续执行到 标签，而在 中，只要 非空，就会再次释放它。 修复方式： 移除 中多余的释放操作，保留 中的清理逻辑，从而确保该请求对象只被释放一次。 发现方式： 该问题通过一款原型静态分析工具发现，并经代码审查确认。

AI Predicted 4.0 Difficulty: Theoretical EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 776976a67ae25d18be42794fd783a50757402cbe< c9e93290ffe7db22a8131a5f5fd026335090fbbe affected
776976a67ae25d18be42794fd783a50757402cbe< 7721cf32efa428bd9649f4a9b89fc85601df87de affected
776976a67ae25d18be42794fd783a50757402cbe< f9c43246128a2dd0f2bbad71decf153910ce3606 affected
776976a67ae25d18be42794fd783a50757402cbe< 150d3f3c461345b6c9ae784912cf1e49c8e5ff6b affected
776976a67ae25d18be42794fd783a50757402cbe< b2e68583c7c51eea2aafb8f1793e0d285c56ac82 affected
776976a67ae25d18be42794fd783a50757402cbe< 6648c470918371766f6d368113dd2a4faebac93f affected
776976a67ae25d18be42794fd783a50757402cbe< 6be64cca6527f7fc99b05abf54f22db91bbc116f affected
776976a67ae25d18be42794fd783a50757402cbe< 41d541e3718db01668a4cd29815ee4b3b55f76d2 affected
… +10 more rows
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I. Basic Information for CVE-2026-93141

Vulnerability Information
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Vulnerability Title
usb: gadget: r8a66597: avoid double free of ep0_req in probe error path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: r8a66597: avoid double free of ep0_req in probe error path If usb_add_gadget_udc() fails, r8a66597_probe() jumps to err_add_udc and frees ep0_req, then falls through to clean_up2 where ep0_req is freed again when it is non-NULL. Remove the redundant free from err_add_udc and keep the cleanup in clean_up2 so the request is released exactly once. Issue found using a prototype static analysis tool and confirmed by code review.
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 776976a67ae25d18be42794fd783a50757402cbe ~ c9e93290ffe7db22a8131a5f5fd026335090fbbe -
Linux Linux 3.17 -

II. Public POCs for CVE-2026-93141

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III. Intelligence Information for CVE-2026-93141

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Patches & Fixes for CVE-2026-93141 (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

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