CVE-2025-21776

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6.13.0-rc3-00017-gf44d154d6e3d #14\nHardware name: FreeBSD BHYVE/BHYVE, BIOS 14.0 10/17/2021\nWorkqueue: usb_hub_wq hub_event\nRIP: 0010:usb_hub_adjust_deviceremovable+0x78/0x110\n...\nCall Trace:\n <TASK>\n ? die_addr+0x31/0x80\n ? exc_general_protection+0x1b4/0x3c0\n ? asm_exc_general_protection+0x26/0x30\n ? usb_hub_adjust_deviceremovable+0x78/0x110\n hub_probe+0x7c7/0xab0\n usb_probe_interface+0x14b/0x350\n really_probe+0xd0/0x2d0\n ? __pfx___device_attach_driver+0x10/0x10\n __driver_probe_device+0x6e/0x110\n driver_probe_device+0x1a/0x90\n __device_attach_driver+0x7e/0xc0\n bus_for_each_drv+0x7f/0xd0\n __device_attach+0xaa/0x1a0\n bus_probe_device+0x8b/0xa0\n device_add+0x62e/0x810\n usb_set_configuration+0x65d/0x990\n usb_generic_driver_probe+0x4b/0x70\n usb_probe_device+0x36/0xd0\n\nThe cause of this error is that the device has two interfaces, and the\nhub driver binds to interface 1 instead of interface 0, which is where\nusb_hub_to_struct_hub() looks.\n\nWe can prevent the problem from occurring by refusing to accept hub\ndevices that violate the USB spec by having more than one\nconfiguration or interface."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/core/hub.c"], "versions": [{"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "49f077106fa07919a6a6dda99bb490dd1d1a8218", "status": "affected", "versionType": "git"}, {"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "d343fe0fad5c1d689775f2dda24a85ce98e29566", "status": "affected", "versionType": "git"}, {"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "d3a67adb365cdfdac4620daf38a82e57ca45806c", "status": "affected", "versionType": "git"}, {"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "c3720b04df84b5459050ae4e03ec7d545652f897", "status": "affected", "versionType": "git"}, {"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "e905a0fca7bff0855d312c16f71e60e1773b393e", "status": "affected", "versionType": "git"}, {"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "62d8f4c5454dd39aded4f343720d1c5a1803cfef", "status": "affected", "versionType": "git"}, {"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "5b9778e1fe715700993ce436c152dc3b7df0b490", "status": "affected", "versionType": "git"}, {"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "2240fed37afbcdb5e8b627bc7ad986891100e05d", "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/hub.c"], "versions": [{"version": "3.9", "status": "affected"}, {"version": "0", "lessThan": "3.9", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.291", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.235", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.179", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.129", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.79", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.16", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13.4", "lessThanOrEqual": "6.13.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14", "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": "3.9", "versionEndExcluding": 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"versionStartIncluding": "3.9", "versionEndExcluding": "6.14"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/49f077106fa07919a6a6dda99bb490dd1d1a8218"}, {"url": "https://git.kernel.org/stable/c/d343fe0fad5c1d689775f2dda24a85ce98e29566"}, {"url": "https://git.kernel.org/stable/c/d3a67adb365cdfdac4620daf38a82e57ca45806c"}, {"url": "https://git.kernel.org/stable/c/c3720b04df84b5459050ae4e03ec7d545652f897"}, {"url": "https://git.kernel.org/stable/c/e905a0fca7bff0855d312c16f71e60e1773b393e"}, {"url": "https://git.kernel.org/stable/c/62d8f4c5454dd39aded4f343720d1c5a1803cfef"}, {"url": "https://git.kernel.org/stable/c/5b9778e1fe715700993ce436c152dc3b7df0b490"}, {"url": "https://git.kernel.org/stable/c/2240fed37afbcdb5e8b627bc7ad986891100e05d"}], "title": "USB: hub: Ignore non-compliant devices with too many configs or interfaces", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T19:37:31.434Z"}}, {"x_adpType": "supplier", "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-10-15T01:04:18.924Z"}, "affected": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - BIOS", "versions": [{"status": "affected", "version": "0", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [{"status": "affected", "version": "0", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [{"status": "affected", "version": "0", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}], "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-503939.html"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-21776", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-05T20:35:14.842474Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-05T20:41:42.562Z"}}]}}

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"unknown"}], "x_adpType": "supplier", "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-503939.html"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}], "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-10-15T01:04:18.924Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-21776", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-05T20:35:14.842474Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-05T20:35:16.179Z"}}], "cna": {"title": "USB: hub: Ignore non-compliant devices with too many configs or interfaces", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "49f077106fa07919a6a6dda99bb490dd1d1a8218", "versionType": "git"}, {"status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "d343fe0fad5c1d689775f2dda24a85ce98e29566", "versionType": "git"}, {"status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "d3a67adb365cdfdac4620daf38a82e57ca45806c", "versionType": "git"}, {"status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "c3720b04df84b5459050ae4e03ec7d545652f897", "versionType": "git"}, {"status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "e905a0fca7bff0855d312c16f71e60e1773b393e", "versionType": "git"}, {"status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "62d8f4c5454dd39aded4f343720d1c5a1803cfef", "versionType": "git"}, {"status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "5b9778e1fe715700993ce436c152dc3b7df0b490", "versionType": "git"}, {"status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "lessThan": "2240fed37afbcdb5e8b627bc7ad986891100e05d", "versionType": "git"}], "programFiles": ["drivers/usb/core/hub.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.9"}, {"status": "unaffected", "version": "0", "lessThan": "3.9", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.291", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.235", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.179", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.129", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.79", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.16", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.13.4", "versionType": "semver", "lessThanOrEqual": "6.13.*"}, {"status": "unaffected", "version": "6.14", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/usb/core/hub.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/49f077106fa07919a6a6dda99bb490dd1d1a8218"}, {"url": "https://git.kernel.org/stable/c/d343fe0fad5c1d689775f2dda24a85ce98e29566"}, {"url": "https://git.kernel.org/stable/c/d3a67adb365cdfdac4620daf38a82e57ca45806c"}, {"url": "https://git.kernel.org/stable/c/c3720b04df84b5459050ae4e03ec7d545652f897"}, {"url": "https://git.kernel.org/stable/c/e905a0fca7bff0855d312c16f71e60e1773b393e"}, {"url": "https://git.kernel.org/stable/c/62d8f4c5454dd39aded4f343720d1c5a1803cfef"}, {"url": "https://git.kernel.org/stable/c/5b9778e1fe715700993ce436c152dc3b7df0b490"}, {"url": "https://git.kernel.org/stable/c/2240fed37afbcdb5e8b627bc7ad986891100e05d"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: hub: Ignore non-compliant devices with too many configs or interfaces\n\nRobert Morris created a test program which can cause\nusb_hub_to_struct_hub() to dereference a NULL or inappropriate\npointer:\n\nOops: general protection fault, probably for non-canonical address\n0xcccccccccccccccc: 0000 [#1] SMP DEBUG_PAGEALLOC PTI\nCPU: 7 UID: 0 PID: 117 Comm: kworker/7:1 Not tainted 6.13.0-rc3-00017-gf44d154d6e3d #14\nHardware name: FreeBSD BHYVE/BHYVE, BIOS 14.0 10/17/2021\nWorkqueue: usb_hub_wq hub_event\nRIP: 0010:usb_hub_adjust_deviceremovable+0x78/0x110\n...\nCall Trace:\n <TASK>\n ? die_addr+0x31/0x80\n ? exc_general_protection+0x1b4/0x3c0\n ? asm_exc_general_protection+0x26/0x30\n ? usb_hub_adjust_deviceremovable+0x78/0x110\n hub_probe+0x7c7/0xab0\n usb_probe_interface+0x14b/0x350\n really_probe+0xd0/0x2d0\n ? __pfx___device_attach_driver+0x10/0x10\n __driver_probe_device+0x6e/0x110\n driver_probe_device+0x1a/0x90\n __device_attach_driver+0x7e/0xc0\n bus_for_each_drv+0x7f/0xd0\n __device_attach+0xaa/0x1a0\n bus_probe_device+0x8b/0xa0\n device_add+0x62e/0x810\n usb_set_configuration+0x65d/0x990\n usb_generic_driver_probe+0x4b/0x70\n usb_probe_device+0x36/0xd0\n\nThe cause of this error is that the device has two interfaces, and the\nhub driver binds to interface 1 instead of interface 0, which is where\nusb_hub_to_struct_hub() looks.\n\nWe can prevent the problem from occurring by refusing to accept hub\ndevices that violate the USB spec by having more than one\nconfiguration or interface."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.291", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.235", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.179", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.129", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.79", "versionStartIncluding": "3.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.16", "versionStartIncluding": "3.9"}, 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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/usb/core/hub.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "49f077106fa07919a6a6dda99bb490dd1d1a8218", "status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "versionType": "git"}, {"lessThan": "d343fe0fad5c1d689775f2dda24a85ce98e29566", "status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "versionType": "git"}, {"lessThan": "d3a67adb365cdfdac4620daf38a82e57ca45806c", "status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "versionType": "git"}, {"lessThan": "c3720b04df84b5459050ae4e03ec7d545652f897", "status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "versionType": "git"}, {"lessThan": "e905a0fca7bff0855d312c16f71e60e1773b393e", "status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "versionType": "git"}, {"lessThan": "62d8f4c5454dd39aded4f343720d1c5a1803cfef", "status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "versionType": "git"}, {"lessThan": "5b9778e1fe715700993ce436c152dc3b7df0b490", "status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "versionType": "git"}, {"lessThan": "2240fed37afbcdb5e8b627bc7ad986891100e05d", "status": "affected", "version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/usb/core/hub.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.9"}, {"lessThan": "3.9", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.291", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.235", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.179", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.129", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.79", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.16", "versionType": "semver"}, {"lessThanOrEqual": "6.13.*", "status": "unaffected", "version": "6.13.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.14", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"affectedData": [{"defaultStatus": "unknown", "product": "SIMATIC S7-1500 TM MFP - BIOS", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "0", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "0", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "18BF0B0B-D95C-472C-A99F-DE209F253F6F", "versionEndExcluding": "6.1.129", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B16AADE5-B2FD-4C14-B4E4-85E8EDAFE775", "versionEndExcluding": "6.6.79", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "13C8DB18-FC60-425F-84E5-3EDDEC61B2FC", "versionEndExcluding": "6.12.16", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2A2093ED-74A9-43F9-AC72-50030F374EA4", "versionEndExcluding": "6.13.4", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*", "matchCriteriaId": "186716B6-2B66-4BD0-852E-D48E71C0C85F", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*", "matchCriteriaId": "0D3E781C-403A-498F-9DA9-ECEE50F41E75", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: hub: Ignore non-compliant devices with too many configs or interfaces\n\nRobert Morris created a test program which can cause\nusb_hub_to_struct_hub() to dereference a NULL or inappropriate\npointer:\n\nOops: general protection fault, probably for non-canonical address\n0xcccccccccccccccc: 0000 [#1] SMP DEBUG_PAGEALLOC PTI\nCPU: 7 UID: 0 PID: 117 Comm: kworker/7:1 Not tainted 6.13.0-rc3-00017-gf44d154d6e3d #14\nHardware name: FreeBSD BHYVE/BHYVE, BIOS 14.0 10/17/2021\nWorkqueue: usb_hub_wq hub_event\nRIP: 0010:usb_hub_adjust_deviceremovable+0x78/0x110\n...\nCall Trace:\n <TASK>\n ? die_addr+0x31/0x80\n ? exc_general_protection+0x1b4/0x3c0\n ? asm_exc_general_protection+0x26/0x30\n ? usb_hub_adjust_deviceremovable+0x78/0x110\n hub_probe+0x7c7/0xab0\n usb_probe_interface+0x14b/0x350\n really_probe+0xd0/0x2d0\n ? __pfx___device_attach_driver+0x10/0x10\n __driver_probe_device+0x6e/0x110\n driver_probe_device+0x1a/0x90\n __device_attach_driver+0x7e/0xc0\n bus_for_each_drv+0x7f/0xd0\n __device_attach+0xaa/0x1a0\n bus_probe_device+0x8b/0xa0\n device_add+0x62e/0x810\n usb_set_configuration+0x65d/0x990\n usb_generic_driver_probe+0x4b/0x70\n usb_probe_device+0x36/0xd0\n\nThe cause of this error is that the device has two interfaces, and the\nhub driver binds to interface 1 instead of interface 0, which is where\nusb_hub_to_struct_hub() looks.\n\nWe can prevent the problem from occurring by refusing to accept hub\ndevices that violate the USB spec by having more than one\nconfiguration or interface."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: USB: hub: Ignorar dispositivos no compatibles con demasiadas configuraciones o interfaces Robert Morris cre\u00f3 un programa de prueba que puede hacer que usb_hub_to_struct_hub() desreferenciara un puntero NULL o inapropiado: Ups: error de protecci\u00f3n general, probablemente para una direcci\u00f3n no can\u00f3nica 0xcccccccccccccccc: 0000 [#1] SMP DEBUG_PAGEALLOC PTI CPU: 7 UID: 0 PID: 117 Comm: kworker/7:1 No contaminado 6.13.0-rc3-00017-gf44d154d6e3d #14 Nombre del hardware: FreeBSD BHYVE/BHYVE, BIOS 14.0 17/10/2021 Cola de trabajo: usb_hub_wq hub_event RIP: 0010:usb_hub_adjust_deviceremovable+0x78/0x110 ... Seguimiento de llamadas: ? die_addr+0x31/0x80 ? exc_general_protection+0x1b4/0x3c0 ? asm_exc_general_protection+0x26/0x30 ? usb_hub_adjust_deviceremovable+0x78/0x110 hub_probe+0x7c7/0xab0 usb_probe_interface+0x14b/0x350 really_probe+0xd0/0x2d0 ? __pfx___device_attach_driver+0x10/0x10 __driver_probe_device+0x6e/0x110 driver_probe_device+0x1a/0x90 __device_attach_driver+0x7e/0xc0 bus_for_each_drv+0x7f/0xd0 __device_attach+0xaa/0x1a0 bus_probe_device+0x8b/0xa0 device_add+0x62e/0x810 usb_set_configuration+0x65d/0x990 usb_generic_driver_probe+0x4b/0x70 usb_probe_device+0x36/0xd0 La causa de este error es que el dispositivo tiene dos interfaces y el controlador del concentrador se vincula a la interfaz 1 en lugar de a la interfaz 0, que es donde usb_hub_to_struct_hub() analiza. Podemos evitar que se produzca el problema si nos negamos a aceptar dispositivos concentradores que violen la especificaci\u00f3n USB al tener m\u00e1s de una configuraci\u00f3n o interfaz."}], "id": "CVE-2025-21776", "lastModified": "2026-11-05T21:17:42.807", "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-2025-21776", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T20:35:14.842474Z", "version": "2.0.3"}}]}, "published": "2025-02-27T03:15:18.263", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2240fed37afbcdb5e8b627bc7ad986891100e05d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/49f077106fa07919a6a6dda99bb490dd1d1a8218"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5b9778e1fe715700993ce436c152dc3b7df0b490"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/62d8f4c5454dd39aded4f343720d1c5a1803cfef"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c3720b04df84b5459050ae4e03ec7d545652f897"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d343fe0fad5c1d689775f2dda24a85ce98e29566"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d3a67adb365cdfdac4620daf38a82e57ca45806c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e905a0fca7bff0855d312c16f71e60e1773b393e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-503939.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: USB: hub: Ignore non-compliant devices with too many configs or interfaces", "id": "2348651", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348651"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nUSB: hub: Ignore non-compliant devices with too many configs or interfaces\nRobert Morris created a test program which can cause\nusb_hub_to_struct_hub() to dereference a NULL or inappropriate\npointer:\nOops: general protection fault, probably for non-canonical address\n0xcccccccccccccccc: 0000 [#1] SMP DEBUG_PAGEALLOC PTI\nCPU: 7 UID: 0 PID: 117 Comm: kworker/7:1 Not tainted 6.13.0-rc3-00017-gf44d154d6e3d #14\nHardware name: FreeBSD BHYVE/BHYVE, BIOS 14.0 10/17/2021\nWorkqueue: usb_hub_wq hub_event\nRIP: 0010:usb_hub_adjust_deviceremovable+0x78/0x110\n...\nCall Trace:\n<TASK>\n? die_addr+0x31/0x80\n? exc_general_protection+0x1b4/0x3c0\n? asm_exc_general_protection+0x26/0x30\n? usb_hub_adjust_deviceremovable+0x78/0x110\nhub_probe+0x7c7/0xab0\nusb_probe_interface+0x14b/0x350\nreally_probe+0xd0/0x2d0\n? __pfx___device_attach_driver+0x10/0x10\n__driver_probe_device+0x6e/0x110\ndriver_probe_device+0x1a/0x90\n__device_attach_driver+0x7e/0xc0\nbus_for_each_drv+0x7f/0xd0\n__device_attach+0xaa/0x1a0\nbus_probe_device+0x8b/0xa0\ndevice_add+0x62e/0x810\nusb_set_configuration+0x65d/0x990\nusb_generic_driver_probe+0x4b/0x70\nusb_probe_device+0x36/0xd0\nThe cause of this error is that the device has two interfaces, and the\nhub driver binds to interface 1 instead of interface 0, which is where\nusb_hub_to_struct_hub() looks.\nWe can prevent the problem from occurring by refusing to accept hub\ndevices that violate the USB spec by having more than one\nconfiguration or interface."], "name": "CVE-2025-21776", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "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"}], "public_date": "2025-02-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-21776\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-21776\nhttps://lore.kernel.org/linux-cve-announce/2025022607-CVE-2025-21776-5581@gregkh/T"], "threat_severity": "Low"}

{}