CVE-2026-98763

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98763", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.368Z", "datePublished": "2026-10-18T15:47:54.526Z", "dateUpdated": "2026-10-30T12:39:32.238Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:39:32.238Z"}, "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/core/message.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "59d2c9d70fa42e2290ff68e6430d38a1c817fcb7", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a7928ad4bbb330dfb0f726166384f319d66eb5d1", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "b521fe45e06b3f7042e6d1f9566ddb6f179dcb1d", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "198d74dcfa129523125f46a89479d3b446b17dbe", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "7a9f61476b0e8002092a52ee8295edeeb0a28d1e", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "1da16c46b8d7101b74bc2d72a04e23cf5c7ddea1", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "c50413ecb662ea43c7f487632c8114721743a277", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "0e8baa78d872f2db440d8b9ded946ab8dceb89eb", "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/core/message.c"], "versions": [{"version": "2.6.12", "status": "affected"}, {"version": "0", "lessThan": "2.6.12", "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": "2.6.12", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/59d2c9d70fa42e2290ff68e6430d38a1c817fcb7"}, {"url": "https://git.kernel.org/stable/c/a7928ad4bbb330dfb0f726166384f319d66eb5d1"}, {"url": "https://git.kernel.org/stable/c/b521fe45e06b3f7042e6d1f9566ddb6f179dcb1d"}, {"url": "https://git.kernel.org/stable/c/198d74dcfa129523125f46a89479d3b446b17dbe"}, {"url": "https://git.kernel.org/stable/c/7a9f61476b0e8002092a52ee8295edeeb0a28d1e"}, {"url": "https://git.kernel.org/stable/c/1da16c46b8d7101b74bc2d72a04e23cf5c7ddea1"}, {"url": "https://git.kernel.org/stable/c/c50413ecb662ea43c7f487632c8114721743a277"}, {"url": "https://git.kernel.org/stable/c/0e8baa78d872f2db440d8b9ded946ab8dceb89eb"}], "title": "usb: core: clear both ep_in and ep_out for non-ep0 control endpoints", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/usb/core/message.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "59d2c9d70fa42e2290ff68e6430d38a1c817fcb7", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "a7928ad4bbb330dfb0f726166384f319d66eb5d1", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "b521fe45e06b3f7042e6d1f9566ddb6f179dcb1d", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "198d74dcfa129523125f46a89479d3b446b17dbe", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "7a9f61476b0e8002092a52ee8295edeeb0a28d1e", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "1da16c46b8d7101b74bc2d72a04e23cf5c7ddea1", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "c50413ecb662ea43c7f487632c8114721743a277", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "0e8baa78d872f2db440d8b9ded946ab8dceb89eb", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/usb/core/message.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.12"}, {"lessThan": "2.6.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.56", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "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."}], "id": "CVE-2026-98763", "lastModified": "2026-10-30T13:21:25.763", "metrics": {}, "published": "2026-10-18T16:17:30.113", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: usb: core: clear both ep_in and ep_out for non-ep0 control endpoints", "id": "2555121", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555121"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nusb: core: clear both ep_in and ep_out for non-ep0 control endpoints\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.\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.\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.\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.", "A flaw was found in the Linux kernel's USB subsystem. This vulnerability allows an attacker with physical access connecting a malicious USB device, or a local user with privileges to emulate USB hardware, to cause a Denial of Service (DoS) or potentially execute arbitrary code. When disabling a bidirectional USB control endpoint, the kernel fails to clear pointers for both data directions, leading to a use-after-free condition when accessing the freed endpoint memory."], "name": "CVE-2026-98763", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98763\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98763\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98763.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,7a9f61476b0e8002092a52ee8295edeeb0a28d1e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,1da16c46b8d7101b74bc2d72a04e23cf5c7ddea1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,c50413ecb662ea43c7f487632c8114721743a277)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,0e8baa78d872f2db440d8b9ded946ab8dceb89eb)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.113,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.56,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.10,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-18T20:00:12.041569+00:00", "updated": "2026-10-23T21:30:04.793209+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}