{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98766","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.368Z","datePublished":"2026-10-18T15:47:59.061Z","dateUpdated":"2026-10-30T12:39:35.461Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-30T12:39:35.461Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: aspeed-vhub: cancel wake work on device removal\n\nwake_work is armed from the gadget .wakeup callback to resume suspended\ndownstream ports, and it is never cancelled in ast_vhub_remove(), so a\nwork item queued before or during removal can run after devm has freed\nvhub and its ports, a use-after-free.\n\nCancelling the work alone is not sufficient: usb_gadget_wakeup() takes\nno lock and the unbind path never clears wakeup_en, so a remote-wakeup\nrequest in flight on another CPU can re-arm the work after the cancel\nand before vhub is freed.\n\nast_vhub_del_dev() already clears d->registered under vhub->lock before\nunregistering the gadget. Refuse the wakeup in ast_vhub_udc_wakeup()\nonce d->registered is clear: the check and the schedule_work() are then\natomic against the unbind, so a wakeup that passed before the flag was\ncleared is drained by the cancel_work_sync() after the del_dev loop,\nand one that arrives later returns without arming. Also move INIT_WORK()\nto the top of ast_vhub_probe(), since the probe error path reuses\nast_vhub_remove() and would otherwise cancel a never-initialized work\nitem.\n\nThis issue was found by an in-house static analysis tool."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/gadget/udc/aspeed-vhub/core.c","drivers/usb/gadget/udc/aspeed-vhub/dev.c","drivers/usb/gadget/udc/aspeed-vhub/hub.c","drivers/usb/gadget/udc/aspeed-vhub/vhub.h"],"versions":[{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"89b3fef8809ec1a9acf5f753eb89b9508d7e4466","status":"affected","versionType":"git"},{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"3aed0c86afa7877d08722233a8b15e8c1ff8bcb8","status":"affected","versionType":"git"},{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"552f580a18787cfbd83d28d7d76d584c29f2c4c2","status":"affected","versionType":"git"},{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"0d39ac4f65f9357469518c70e42940e0d8b0e497","status":"affected","versionType":"git"},{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"f343bfa3fc9f6255602d66f4a7dbe7ddef13ba41","status":"affected","versionType":"git"},{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"474e9e1852fb5ba0bfb26f123dd0cb361d0f4f4d","status":"affected","versionType":"git"},{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"c81504dfd2d93e345c98e7a012c2f2e74ce5b6a1","status":"affected","versionType":"git"},{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"20388c8d1d74c203fec8194c45cd31afdfab934e","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/gadget/udc/aspeed-vhub/core.c","drivers/usb/gadget/udc/aspeed-vhub/dev.c","drivers/usb/gadget/udc/aspeed-vhub/hub.c","drivers/usb/gadget/udc/aspeed-vhub/vhub.h"],"versions":[{"version":"4.18","status":"affected"},{"version":"0","lessThan":"4.18","status":"unaffected","versionType":"semver"},{"version":"5.10.273","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.224","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.191","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.56","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.10","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/89b3fef8809ec1a9acf5f753eb89b9508d7e4466"},{"url":"https://git.kernel.org/stable/c/3aed0c86afa7877d08722233a8b15e8c1ff8bcb8"},{"url":"https://git.kernel.org/stable/c/552f580a18787cfbd83d28d7d76d584c29f2c4c2"},{"url":"https://git.kernel.org/stable/c/0d39ac4f65f9357469518c70e42940e0d8b0e497"},{"url":"https://git.kernel.org/stable/c/f343bfa3fc9f6255602d66f4a7dbe7ddef13ba41"},{"url":"https://git.kernel.org/stable/c/474e9e1852fb5ba0bfb26f123dd0cb361d0f4f4d"},{"url":"https://git.kernel.org/stable/c/c81504dfd2d93e345c98e7a012c2f2e74ce5b6a1"},{"url":"https://git.kernel.org/stable/c/20388c8d1d74c203fec8194c45cd31afdfab934e"}],"title":"usb: gadget: aspeed-vhub: cancel wake work on device removal","x_generator":{"engine":"bippy-1.2.0"}}}}