CVE-2026-98763
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: usb: core: clear both ep_in and ep_out for non-ep0 control endpoints In usb_enable_endpoint(), non-zero control endpoints (where usb_endpoint_xfer_control(&ep->desc) is true) populate both dev->ep_in[epnum] and dev->ep_out[epnum] with the same struct usb_host_endpoint pointer. However, usb_disable_endpoint() only clears either dev->ep_out[epnum] or dev->ep_in[epnum] depending on the direction bit of epaddr when reset_hardware is set, leaving the opposite direction's array slot pointing to the disabled/freed endpoint. Clear both dev->ep_out[epnum] and dev->ep_in[epnum] when disabling a non-ep0 control endpoint with reset_hardware set, and update the function kerneldoc accordingly. Tested in QEMU against Linux 7.3.0-rc3 using dummy_hcd and raw-gadget to enumerate a USB device with a non-zero control endpoint (bEndpointAddress 0x01, bmAttributes USB_ENDPOINT_XFER_CONTROL), verifying that both dev->ep_in[1] and dev->ep_out[1] are cleared when the interface is disabled.
Severity
Not scored
CVSS score
Not available
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-10-18 16:17:30.113000
Last modified
2026-10-30 13:21:25.763000
View original CVE JSON
{
"id": "CVE-2026-98763",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-10-18T16:17:30.113",
"lastModified": "2026-10-30T13:21:25.763",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: core: clear both ep_in and ep_out for non-ep0 control endpoints\n\nIn usb_enable_endpoint(), non-zero control endpoints (where\nusb_endpoint_xfer_control(&ep->desc) is true) populate both\ndev->ep_in[epnum] and dev->ep_out[epnum] with the same struct\nusb_host_endpoint pointer.\n\nHowever, usb_disable_endpoint() only clears either dev->ep_out[epnum] or\ndev->ep_in[epnum] depending on the direction bit of epaddr when\nreset_hardware is set, leaving the opposite direction's array slot\npointing to the disabled/freed endpoint.\n\nClear both dev->ep_out[epnum] and dev->ep_in[epnum] when disabling a\nnon-ep0 control endpoint with reset_hardware set, and update the\nfunction kerneldoc accordingly.\n\nTested in QEMU against Linux 7.3.0-rc3 using dummy_hcd and raw-gadget to\nenumerate a USB device with a non-zero control endpoint\n(bEndpointAddress 0x01, bmAttributes USB_ENDPOINT_XFER_CONTROL),\nverifying that both dev->ep_in[1] and dev->ep_out[1] are cleared when\nthe interface is disabled."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/usb/core/message.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "59d2c9d70fa42e2290ff68e6430d38a1c817fcb7",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "a7928ad4bbb330dfb0f726166384f319d66eb5d1",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "b521fe45e06b3f7042e6d1f9566ddb6f179dcb1d",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "198d74dcfa129523125f46a89479d3b446b17dbe",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "7a9f61476b0e8002092a52ee8295edeeb0a28d1e",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "1da16c46b8d7101b74bc2d72a04e23cf5c7ddea1",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "c50413ecb662ea43c7f487632c8114721743a277",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "0e8baa78d872f2db440d8b9ded946ab8dceb89eb",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/usb/core/message.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "2.6.12",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.12",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.273",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.224",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.160",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.113",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.56",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2.10",
"lessThanOrEqual": "7.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"url": "https://git.kernel.org/stable/c/0e8baa78d872f2db440d8b9ded946ab8dceb89eb",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/198d74dcfa129523125f46a89479d3b446b17dbe",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/1da16c46b8d7101b74bc2d72a04e23cf5c7ddea1",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/59d2c9d70fa42e2290ff68e6430d38a1c817fcb7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/7a9f61476b0e8002092a52ee8295edeeb0a28d1e",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a7928ad4bbb330dfb0f726166384f319d66eb5d1",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/b521fe45e06b3f7042e6d1f9566ddb6f179dcb1d",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c50413ecb662ea43c7f487632c8114721743a277",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}