CVE-2026-64331

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64331", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.781Z", "datePublished": "2026-07-25T08:49:58.370Z", "dateUpdated": "2026-11-06T16:44:45.966Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:53:33.891Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusbip: vudc: fix NULL deref in vep_dequeue()\n\nvep_alloc_request() wasn't initializing vrequest->udc, so cancellations\non the FunctionFS AIO path were arriving in vep_dequeue without a valid\nUDC reference.\n\nSince vrequest->udc is never actually properly used anywhere, we opt to\nremove it, and update vep_dequeue to obtain a reference to the udc with\nep_to_vudc(), consistent with the other vep_ ops.\n\nAFAICT this bug has existed for ~10 years. Seems that nobody has really\nstressed the FunctionFS AIO path on usbip's vudc.\n\nI tested this fix in a QEMU aarch64 guest driving FunctionFS endpoints\nvia AIO. Before the fix, running `usbip attach` from the host would\ncause the guest to oops with the following backtrace:\n\nCall trace:\n vep_dequeue+0x1c/0xe4 (P)\n usb_ep_dequeue+0x14/0x20\n ffs_aio_cancel+0x24/0x34\n __arm64_sys_io_cancel+0xb0/0x124\n do_el0_svc+0x68/0x100\n el0_svc+0x18/0x5c\n el0t_64_sync_handler+0x98/0xdc\n el0t_64_sync+0x154/0x158"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/usbip/vudc.h", "drivers/usb/usbip/vudc_dev.c"], "versions": [{"version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "9858c91d9ee6a13c45311569039413729fc9b757", "status": "affected", "versionType": "git"}, {"version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "1226293ec9bed3d4cc5b05eeeb811d315ca51652", "status": "affected", "versionType": "git"}, {"version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "3750f75f29f99c0223601e2ee73ad084adec47bd", "status": "affected", "versionType": "git"}, {"version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "d0ebf9cc7c2ddf95a7cfc654b940bdacb7edde97", "status": "affected", "versionType": "git"}, {"version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "0025276175fbbe0dcbf3f84d090b0adee769e9d9", "status": "affected", "versionType": "git"}, {"version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "347b59e9f96719d89b6ef555d02a18ada1a5846f", "status": "affected", "versionType": "git"}, {"version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "0443e4416aa1ee97748d1ed904eaf3352c60045e", "status": "affected", "versionType": "git"}, {"version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "c5371e0b91b24159a3ebaa61e70b0980bcf03c0a", "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/usbip/vudc.h", "drivers/usb/usbip/vudc_dev.c"], "versions": [{"version": "4.7", "status": "affected"}, {"version": "0", "lessThan": "4.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "4.7", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.12.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9858c91d9ee6a13c45311569039413729fc9b757"}, {"url": "https://git.kernel.org/stable/c/1226293ec9bed3d4cc5b05eeeb811d315ca51652"}, {"url": "https://git.kernel.org/stable/c/3750f75f29f99c0223601e2ee73ad084adec47bd"}, {"url": "https://git.kernel.org/stable/c/d0ebf9cc7c2ddf95a7cfc654b940bdacb7edde97"}, {"url": "https://git.kernel.org/stable/c/0025276175fbbe0dcbf3f84d090b0adee769e9d9"}, {"url": "https://git.kernel.org/stable/c/347b59e9f96719d89b6ef555d02a18ada1a5846f"}, {"url": "https://git.kernel.org/stable/c/0443e4416aa1ee97748d1ed904eaf3352c60045e"}, {"url": "https://git.kernel.org/stable/c/c5371e0b91b24159a3ebaa61e70b0980bcf03c0a"}], "title": "usbip: vudc: fix NULL deref in vep_dequeue()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-64331", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:35:21.455334Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:44:45.966Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-64331", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:35:21.455334Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:35:22.567Z"}}], "cna": {"title": "usbip: vudc: fix NULL deref in vep_dequeue()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "9858c91d9ee6a13c45311569039413729fc9b757", "versionType": "git"}, {"status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "1226293ec9bed3d4cc5b05eeeb811d315ca51652", "versionType": "git"}, {"status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "3750f75f29f99c0223601e2ee73ad084adec47bd", "versionType": "git"}, {"status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "d0ebf9cc7c2ddf95a7cfc654b940bdacb7edde97", "versionType": "git"}, {"status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "0025276175fbbe0dcbf3f84d090b0adee769e9d9", "versionType": "git"}, {"status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "347b59e9f96719d89b6ef555d02a18ada1a5846f", "versionType": "git"}, {"status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "0443e4416aa1ee97748d1ed904eaf3352c60045e", "versionType": "git"}, {"status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "lessThan": "c5371e0b91b24159a3ebaa61e70b0980bcf03c0a", "versionType": "git"}], "programFiles": ["drivers/usb/usbip/vudc.h", "drivers/usb/usbip/vudc_dev.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.7"}, {"status": "unaffected", "version": "0", "lessThan": "4.7", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.261", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.212", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.178", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.145", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.96", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.39", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.4", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/usb/usbip/vudc.h", "drivers/usb/usbip/vudc_dev.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/9858c91d9ee6a13c45311569039413729fc9b757"}, {"url": "https://git.kernel.org/stable/c/1226293ec9bed3d4cc5b05eeeb811d315ca51652"}, {"url": "https://git.kernel.org/stable/c/3750f75f29f99c0223601e2ee73ad084adec47bd"}, {"url": "https://git.kernel.org/stable/c/d0ebf9cc7c2ddf95a7cfc654b940bdacb7edde97"}, {"url": "https://git.kernel.org/stable/c/0025276175fbbe0dcbf3f84d090b0adee769e9d9"}, {"url": "https://git.kernel.org/stable/c/347b59e9f96719d89b6ef555d02a18ada1a5846f"}, {"url": "https://git.kernel.org/stable/c/0443e4416aa1ee97748d1ed904eaf3352c60045e"}, {"url": "https://git.kernel.org/stable/c/c5371e0b91b24159a3ebaa61e70b0980bcf03c0a"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusbip: vudc: fix NULL deref in vep_dequeue()\n\nvep_alloc_request() wasn't initializing vrequest->udc, so cancellations\non the FunctionFS AIO path were arriving in vep_dequeue without a valid\nUDC reference.\n\nSince vrequest->udc is never actually properly used anywhere, we opt to\nremove it, and update vep_dequeue to obtain a reference to the udc with\nep_to_vudc(), consistent with the other vep_ ops.\n\nAFAICT this bug has existed for ~10 years. Seems that nobody has really\nstressed the FunctionFS AIO path on usbip's vudc.\n\nI tested this fix in a QEMU aarch64 guest driving FunctionFS endpoints\nvia AIO. Before the fix, running `usbip attach` from the host would\ncause the guest to oops with the following backtrace:\n\nCall trace:\n vep_dequeue+0x1c/0xe4 (P)\n usb_ep_dequeue+0x14/0x20\n ffs_aio_cancel+0x24/0x34\n __arm64_sys_io_cancel+0xb0/0x124\n do_el0_svc+0x68/0x100\n el0_svc+0x18/0x5c\n el0t_64_sync_handler+0x98/0xdc\n el0t_64_sync+0x154/0x158"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.261", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.212", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.178", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.145", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.96", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.39", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.4", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "4.7"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:53:33.891Z"}}}, "cveMetadata": {"cveId": "CVE-2026-64331", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:44:45.966Z", "dateReserved": "2026-07-19T15:36:31.781Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-07-25T08:49:58.370Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/usb/usbip/vudc.h", "drivers/usb/usbip/vudc_dev.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "9858c91d9ee6a13c45311569039413729fc9b757", "status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "versionType": "git"}, {"lessThan": "1226293ec9bed3d4cc5b05eeeb811d315ca51652", "status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "versionType": "git"}, {"lessThan": "3750f75f29f99c0223601e2ee73ad084adec47bd", "status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "versionType": "git"}, {"lessThan": "d0ebf9cc7c2ddf95a7cfc654b940bdacb7edde97", "status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "versionType": "git"}, {"lessThan": "0025276175fbbe0dcbf3f84d090b0adee769e9d9", "status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "versionType": "git"}, {"lessThan": "347b59e9f96719d89b6ef555d02a18ada1a5846f", "status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "versionType": "git"}, {"lessThan": "0443e4416aa1ee97748d1ed904eaf3352c60045e", "status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "versionType": "git"}, {"lessThan": "c5371e0b91b24159a3ebaa61e70b0980bcf03c0a", "status": "affected", "version": "b6a0ca11186759ad7045d68a5447b1e89f658384", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/usb/usbip/vudc.h", "drivers/usb/usbip/vudc_dev.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.7"}, {"lessThan": "4.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.96", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.39", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2134D243-59E9-4263-9C61-720BA5294D93", "versionEndExcluding": "5.10.261", "versionStartIncluding": "4.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8E99FB01-CD93-41AF-A653-3F450652B9A6", "versionEndExcluding": "5.15.212", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "092233C7-F4E0-40C8-BD4D-A28FE50DFE20", "versionEndExcluding": "6.1.178", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7046B092-F810-4440-ACE6-60218518EECE", "versionEndExcluding": "6.6.145", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "38A8100E-2B1A-462F-AEE9-8901B870FEF2", "versionEndExcluding": "6.12.96", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "914AE4BC-3D59-4C5A-9DB5-9CE327B429F7", "versionEndExcluding": "6.18.39", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42", "versionEndExcluding": "7.1.4", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*", "matchCriteriaId": "5E8B9085-7ADB-4A05-89EF-12949B6A0509", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*", "matchCriteriaId": "1FC0D50D-9D58-4947-A197-A5A3FF07E7E3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusbip: vudc: fix NULL deref in vep_dequeue()\n\nvep_alloc_request() wasn't initializing vrequest->udc, so cancellations\non the FunctionFS AIO path were arriving in vep_dequeue without a valid\nUDC reference.\n\nSince vrequest->udc is never actually properly used anywhere, we opt to\nremove it, and update vep_dequeue to obtain a reference to the udc with\nep_to_vudc(), consistent with the other vep_ ops.\n\nAFAICT this bug has existed for ~10 years. Seems that nobody has really\nstressed the FunctionFS AIO path on usbip's vudc.\n\nI tested this fix in a QEMU aarch64 guest driving FunctionFS endpoints\nvia AIO. Before the fix, running `usbip attach` from the host would\ncause the guest to oops with the following backtrace:\n\nCall trace:\n vep_dequeue+0x1c/0xe4 (P)\n usb_ep_dequeue+0x14/0x20\n ffs_aio_cancel+0x24/0x34\n __arm64_sys_io_cancel+0xb0/0x124\n do_el0_svc+0x68/0x100\n el0_svc+0x18/0x5c\n el0t_64_sync_handler+0x98/0xdc\n el0t_64_sync+0x154/0x158"}], "id": "CVE-2026-64331", "lastModified": "2026-11-06T17:18:48.510", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-64331", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:35:21.455334Z", "version": "2.0.3"}}]}, "published": "2026-07-25T10:17:14.813", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0025276175fbbe0dcbf3f84d090b0adee769e9d9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0443e4416aa1ee97748d1ed904eaf3352c60045e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1226293ec9bed3d4cc5b05eeeb811d315ca51652"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/347b59e9f96719d89b6ef555d02a18ada1a5846f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3750f75f29f99c0223601e2ee73ad084adec47bd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9858c91d9ee6a13c45311569039413729fc9b757"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c5371e0b91b24159a3ebaa61e70b0980bcf03c0a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d0ebf9cc7c2ddf95a7cfc654b940bdacb7edde97"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: usbip: vudc: fix NULL deref in vep_dequeue()", "id": "2507283", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507283"}, "csaw": false, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel's usbip virtual USB device controller (vudc). This vulnerability, a NULL pointer dereference, occurs when vep_alloc_request() fails to initialize a vrequest's udc field, causing asynchronous input/output (AIO) cancellations on the FunctionFS path to arrive without a valid UDC reference. A local attacker, or a remote attacker with control over the host's usbip attach operation to a guest, could exploit this to trigger a kernel crash, resulting in a denial of service (DoS)."], "name": "CVE-2026-64331", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64331\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64331\nhttps://lore.kernel.org/linux-cve-announce/2026072513-CVE-2026-64331-7a76@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b6a0ca11186759ad7045d68a5447b1e89f658384,9858c91d9ee6a13c45311569039413729fc9b757)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b6a0ca11186759ad7045d68a5447b1e89f658384,1226293ec9bed3d4cc5b05eeeb811d315ca51652)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b6a0ca11186759ad7045d68a5447b1e89f658384,3750f75f29f99c0223601e2ee73ad084adec47bd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b6a0ca11186759ad7045d68a5447b1e89f658384,d0ebf9cc7c2ddf95a7cfc654b940bdacb7edde97)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b6a0ca11186759ad7045d68a5447b1e89f658384,0025276175fbbe0dcbf3f84d090b0adee769e9d9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b6a0ca11186759ad7045d68a5447b1e89f658384,347b59e9f96719d89b6ef555d02a18ada1a5846f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b6a0ca11186759ad7045d68a5447b1e89f658384,0443e4416aa1ee97748d1ed904eaf3352c60045e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b6a0ca11186759ad7045d68a5447b1e89f658384,c5371e0b91b24159a3ebaa61e70b0980bcf03c0a)"}}], "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": "generic", "value": "4.7"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.7)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.10.261,5.10.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.212,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.178,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.145,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.96,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.39,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.4,7.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc3,*]"}}], "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": "2026-07-25T13:45:03.873066+00:00", "updated": "2026-09-03T21:30:06.272540+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}