CVE-2026-68368

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68368", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.386Z", "datePublished": "2026-08-10T12:03:45.579Z", "dateUpdated": "2026-11-06T16:55:14.928Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:34:26.235Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_ncm: validate datagram bounds in ncm_unwrap_ntb()\n\nWhen unpacking host-supplied NTBs, ncm_unwrap_ntb() checks datagram length\nagainst frame_max but does not verify that the datagram fits within the\ndeclared block length. Additionally, when decoding multiple NTBs from a\nsingle socket buffer, subsequent block lengths are not checked against the\nactual remaining buffer data.\n\nWith these checks missing, a malicious USB host can specify datagram\noffsets and lengths that point beyond the block, or supply secondary NTB\nheaders declaring lengths larger than the buffer. skb_put_data() then\ncopies adjacent kernel memory from skb_shared_info into the network skb.\n\nFix this by verifying that sufficient buffer space remains for the NTB\nheader before parsing, handling zero-length block declarations, ensuring\nthat block lengths never exceed the remaining buffer space, and verifying\nthat each datagram payload stays strictly within the block boundary."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/f_ncm.c"], "versions": [{"version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "35d15bbaec0557330e774ec31412ef508de6e0e0", "status": "affected", "versionType": "git"}, {"version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "6b2be489eaa6293e60549005d91f15ceb150510f", "status": "affected", "versionType": "git"}, {"version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "f87ed889f0f7417b8938c98d8833f559b755373c", "status": "affected", "versionType": "git"}, {"version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "e07751d0527ccc2a1c32eb0b0b7da3b4b9b5381f", "status": "affected", "versionType": "git"}, {"version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "fff1059d139ef798bab917990524faaf25854ca8", "status": "affected", "versionType": "git"}, {"version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "40c706a0224bde194667e3378c689b542fec4b44", "status": "affected", "versionType": "git"}, {"version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "41fd5f2fb0027d3773ae949e3247c2e0a2a7fe5c", "status": "affected", "versionType": "git"}, {"version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "1febec7e47cdcd01f43fb0211094e3010474666e", "status": "affected", "versionType": "git"}, {"version": "f7e0611e207d8908c4f2858e244370529a76dbf7", "status": "affected", "versionType": "git"}, {"version": "b88ad6e714284b33a47834f5f2a294c2b37c66aa", "status": "affected", "versionType": "git"}, {"version": "471b23586387a32857778c511be60ab31c98dcfd", "status": "affected", "versionType": "git"}, {"version": "4f529c4d1e436230d3af7c09a3239677a14d2b46", "status": "affected", "versionType": "git"}, {"version": "ae6a5394d9fbe118bc95cfe376d6a9d91d7547e8", "status": "affected", "versionType": "git"}, {"version": "5bdf93a2f5459f944b416b188178ca4a92fd206f", "status": "affected", "versionType": "git"}, {"version": "ff3ba016263ee93a1c6209bf5ab1599de7ab1512", "status": "affected", "versionType": "git"}, {"version": "e7ca00f35d8a17af1ae19d529193ebc21bfda164", "status": "affected", "versionType": "git"}, {"version": "4.9.235", "lessThan": "4.10", "status": "affected", "versionType": "semver"}, {"version": "4.14.196", "lessThan": "4.15", "status": "affected", "versionType": "semver"}, {"version": "4.19.143", "lessThan": "4.20", "status": "affected", "versionType": "semver"}, {"version": "5.4.62", "lessThan": "5.5", "status": "affected", "versionType": "semver"}, {"version": "5.8.6", "lessThan": "5.9", "status": "affected", "versionType": "semver"}, {"version": "4.14.328", "lessThan": "4.15", "status": "affected", "versionType": "semver"}, {"version": "4.19.297", "lessThan": "4.20", "status": "affected", "versionType": "semver"}, {"version": "5.4.259", "lessThan": "5.5", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/f_ncm.c"], "versions": [{"version": "5.9", "status": "affected"}, {"version": "0", "lessThan": "5.9", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.265", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.216", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "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": "5.9", "versionEndExcluding": "5.10.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "5.15.216"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "7.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9.235"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.196"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.62"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.328"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.297"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.259"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/35d15bbaec0557330e774ec31412ef508de6e0e0"}, {"url": "https://git.kernel.org/stable/c/6b2be489eaa6293e60549005d91f15ceb150510f"}, {"url": "https://git.kernel.org/stable/c/f87ed889f0f7417b8938c98d8833f559b755373c"}, {"url": "https://git.kernel.org/stable/c/e07751d0527ccc2a1c32eb0b0b7da3b4b9b5381f"}, {"url": "https://git.kernel.org/stable/c/fff1059d139ef798bab917990524faaf25854ca8"}, {"url": "https://git.kernel.org/stable/c/40c706a0224bde194667e3378c689b542fec4b44"}, {"url": "https://git.kernel.org/stable/c/41fd5f2fb0027d3773ae949e3247c2e0a2a7fe5c"}, {"url": "https://git.kernel.org/stable/c/1febec7e47cdcd01f43fb0211094e3010474666e"}], "title": "usb: gadget: f_ncm: validate datagram bounds in ncm_unwrap_ntb()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68368", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:48:23.014514Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:55:14.928Z"}}]}}

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"6b2be489eaa6293e60549005d91f15ceb150510f", "versionType": "git"}, {"status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "f87ed889f0f7417b8938c98d8833f559b755373c", "versionType": "git"}, {"status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "e07751d0527ccc2a1c32eb0b0b7da3b4b9b5381f", "versionType": "git"}, {"status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "fff1059d139ef798bab917990524faaf25854ca8", "versionType": "git"}, {"status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "40c706a0224bde194667e3378c689b542fec4b44", "versionType": "git"}, {"status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "41fd5f2fb0027d3773ae949e3247c2e0a2a7fe5c", "versionType": "git"}, {"status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "lessThan": "1febec7e47cdcd01f43fb0211094e3010474666e", "versionType": "git"}, {"status": "affected", "version": "f7e0611e207d8908c4f2858e244370529a76dbf7", "versionType": "git"}, {"status": "affected", "version": "b88ad6e714284b33a47834f5f2a294c2b37c66aa", "versionType": "git"}, {"status": "affected", "version": "471b23586387a32857778c511be60ab31c98dcfd", "versionType": "git"}, {"status": "affected", "version": "4f529c4d1e436230d3af7c09a3239677a14d2b46", "versionType": "git"}, {"status": "affected", "version": "ae6a5394d9fbe118bc95cfe376d6a9d91d7547e8", "versionType": "git"}, {"status": "affected", "version": "5bdf93a2f5459f944b416b188178ca4a92fd206f", "versionType": "git"}, {"status": "affected", "version": "ff3ba016263ee93a1c6209bf5ab1599de7ab1512", "versionType": "git"}, {"status": "affected", "version": "e7ca00f35d8a17af1ae19d529193ebc21bfda164", "versionType": "git"}, {"status": "affected", "version": "4.9.235", "lessThan": "4.10", "versionType": "semver"}, {"status": "affected", "version": "4.14.196", "lessThan": "4.15", "versionType": "semver"}, {"status": "affected", "version": "4.19.143", "lessThan": "4.20", "versionType": "semver"}, {"status": "affected", "version": "5.4.62", "lessThan": "5.5", "versionType": "semver"}, {"status": "affected", "version": "5.8.6", "lessThan": "5.9", "versionType": "semver"}, {"status": "affected", "version": "4.14.328", "lessThan": "4.15", "versionType": "semver"}, {"status": "affected", "version": "4.19.297", "lessThan": "4.20", "versionType": "semver"}, {"status": "affected", "version": "5.4.259", "lessThan": "5.5", "versionType": "semver"}], "programFiles": ["drivers/usb/gadget/function/f_ncm.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.9"}, {"status": "unaffected", "version": "0", "lessThan": "5.9", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.265", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.216", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.183", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.148", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.101", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.42", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.6", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/usb/gadget/function/f_ncm.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/35d15bbaec0557330e774ec31412ef508de6e0e0"}, {"url": "https://git.kernel.org/stable/c/6b2be489eaa6293e60549005d91f15ceb150510f"}, {"url": "https://git.kernel.org/stable/c/f87ed889f0f7417b8938c98d8833f559b755373c"}, {"url": "https://git.kernel.org/stable/c/e07751d0527ccc2a1c32eb0b0b7da3b4b9b5381f"}, {"url": "https://git.kernel.org/stable/c/fff1059d139ef798bab917990524faaf25854ca8"}, {"url": "https://git.kernel.org/stable/c/40c706a0224bde194667e3378c689b542fec4b44"}, {"url": "https://git.kernel.org/stable/c/41fd5f2fb0027d3773ae949e3247c2e0a2a7fe5c"}, {"url": "https://git.kernel.org/stable/c/1febec7e47cdcd01f43fb0211094e3010474666e"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_ncm: validate datagram bounds in ncm_unwrap_ntb()\n\nWhen unpacking host-supplied NTBs, ncm_unwrap_ntb() checks datagram length\nagainst frame_max but does not verify that the datagram fits within the\ndeclared block length. Additionally, when decoding multiple NTBs from a\nsingle socket buffer, subsequent block lengths are not checked against the\nactual remaining buffer data.\n\nWith these checks missing, a malicious USB host can specify datagram\noffsets and lengths that point beyond the block, or supply secondary NTB\nheaders declaring lengths larger than the buffer. skb_put_data() then\ncopies adjacent kernel memory from skb_shared_info into the network skb.\n\nFix this by verifying that sufficient buffer space remains for the NTB\nheader before parsing, handling zero-length block declarations, ensuring\nthat block lengths never exceed the remaining buffer space, and verifying\nthat each datagram payload stays strictly within the block boundary."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.265", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.216", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.183", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.148", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.101", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.42", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.6", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "4.9.235"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "4.14.196"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "4.19.143"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.4.62"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.8.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "4.14.328"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "4.19.297"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.4.259"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:34:26.235Z"}}}, "cveMetadata": {"cveId": "CVE-2026-68368", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:55:14.928Z", "dateReserved": "2026-07-30T09:28:09.386Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-10T12:03:45.579Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/usb/gadget/function/f_ncm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "35d15bbaec0557330e774ec31412ef508de6e0e0", "status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "versionType": "git"}, {"lessThan": "6b2be489eaa6293e60549005d91f15ceb150510f", "status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "versionType": "git"}, {"lessThan": "f87ed889f0f7417b8938c98d8833f559b755373c", "status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "versionType": "git"}, {"lessThan": "e07751d0527ccc2a1c32eb0b0b7da3b4b9b5381f", "status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "versionType": "git"}, {"lessThan": "fff1059d139ef798bab917990524faaf25854ca8", "status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "versionType": "git"}, {"lessThan": "40c706a0224bde194667e3378c689b542fec4b44", "status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "versionType": "git"}, {"lessThan": "41fd5f2fb0027d3773ae949e3247c2e0a2a7fe5c", "status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "versionType": "git"}, {"lessThan": "1febec7e47cdcd01f43fb0211094e3010474666e", "status": "affected", "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52", "versionType": "git"}, {"status": "affected", "version": "f7e0611e207d8908c4f2858e244370529a76dbf7", "versionType": "git"}, {"status": "affected", "version": "b88ad6e714284b33a47834f5f2a294c2b37c66aa", "versionType": "git"}, {"status": "affected", "version": "471b23586387a32857778c511be60ab31c98dcfd", "versionType": "git"}, {"status": "affected", "version": "4f529c4d1e436230d3af7c09a3239677a14d2b46", "versionType": "git"}, {"status": "affected", "version": "ae6a5394d9fbe118bc95cfe376d6a9d91d7547e8", "versionType": "git"}, {"status": "affected", "version": "5bdf93a2f5459f944b416b188178ca4a92fd206f", "versionType": "git"}, {"status": "affected", "version": "ff3ba016263ee93a1c6209bf5ab1599de7ab1512", "versionType": "git"}, {"status": "affected", "version": "e7ca00f35d8a17af1ae19d529193ebc21bfda164", "versionType": "git"}, {"lessThan": "4.10", "status": "affected", "version": "4.9.235", "versionType": "semver"}, {"lessThan": "4.15", "status": "affected", "version": "4.14.196", "versionType": "semver"}, {"lessThan": "4.20", "status": "affected", "version": "4.19.143", "versionType": "semver"}, {"lessThan": "5.5", "status": "affected", "version": "5.4.62", "versionType": "semver"}, {"lessThan": "5.9", "status": "affected", "version": "5.8.6", "versionType": "semver"}, {"lessThan": "4.15", "status": "affected", "version": "4.14.328", "versionType": "semver"}, {"lessThan": "4.20", "status": "affected", "version": "4.19.297", "versionType": "semver"}, {"lessThan": "5.5", "status": "affected", "version": "5.4.259", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/usb/gadget/function/f_ncm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.9"}, {"lessThan": "5.9", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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: gadget: f_ncm: validate datagram bounds in ncm_unwrap_ntb()\n\nWhen unpacking host-supplied NTBs, ncm_unwrap_ntb() checks datagram length\nagainst frame_max but does not verify that the datagram fits within the\ndeclared block length. Additionally, when decoding multiple NTBs from a\nsingle socket buffer, subsequent block lengths are not checked against the\nactual remaining buffer data.\n\nWith these checks missing, a malicious USB host can specify datagram\noffsets and lengths that point beyond the block, or supply secondary NTB\nheaders declaring lengths larger than the buffer. skb_put_data() then\ncopies adjacent kernel memory from skb_shared_info into the network skb.\n\nFix this by verifying that sufficient buffer space remains for the NTB\nheader before parsing, handling zero-length block declarations, ensuring\nthat block lengths never exceed the remaining buffer space, and verifying\nthat each datagram payload stays strictly within the block boundary."}], "id": "CVE-2026-68368", "lastModified": "2026-11-06T17:19:31.043", "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-68368", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:48:23.014514Z", "version": "2.0.3"}}]}, "published": "2026-08-10T13:20:29.503", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1febec7e47cdcd01f43fb0211094e3010474666e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/35d15bbaec0557330e774ec31412ef508de6e0e0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/40c706a0224bde194667e3378c689b542fec4b44"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/41fd5f2fb0027d3773ae949e3247c2e0a2a7fe5c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6b2be489eaa6293e60549005d91f15ceb150510f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e07751d0527ccc2a1c32eb0b0b7da3b4b9b5381f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f87ed889f0f7417b8938c98d8833f559b755373c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fff1059d139ef798bab917990524faaf25854ca8"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel USB gadget NCM driver: Information disclosure via improper datagram boundary validation", "id": "2513183", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513183"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.7", "cvss3_scoring_vector": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nusb: gadget: f_ncm: validate datagram bounds in ncm_unwrap_ntb()\nWhen unpacking host-supplied NTBs, ncm_unwrap_ntb() checks datagram length\nagainst frame_max but does not verify that the datagram fits within the\ndeclared block length. Additionally, when decoding multiple NTBs from a\nsingle socket buffer, subsequent block lengths are not checked against the\nactual remaining buffer data.\nWith these checks missing, a malicious USB host can specify datagram\noffsets and lengths that point beyond the block, or supply secondary NTB\nheaders declaring lengths larger than the buffer. skb_put_data() then\ncopies adjacent kernel memory from skb_shared_info into the network skb.\nFix this by verifying that sufficient buffer space remains for the NTB\nheader before parsing, handling zero-length block declarations, ensuring\nthat block lengths never exceed the remaining buffer space, and verifying\nthat each datagram payload stays strictly within the block boundary.", "A flaw was found in the Linux kernel's USB gadget NCM (Network Control Model) driver. This vulnerability occurs because the driver fails to properly validate the boundaries of datagrams and Network Transfer Blocks (NTBs) supplied by a USB host. A malicious USB host can exploit this by crafting specific datagram offsets and lengths, causing the kernel to copy adjacent kernel memory into network buffers. This can lead to information disclosure from the kernel's memory."], "name": "CVE-2026-68368", "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": "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:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T12:03:45Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68368\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68368\nhttps://git.kernel.org/stable/c/1febec7e47cdcd01f43fb0211094e3010474666e\nhttps://git.kernel.org/stable/c/40c706a0224bde194667e3378c689b542fec4b44\nhttps://git.kernel.org/stable/c/41fd5f2fb0027d3773ae949e3247c2e0a2a7fe5c\nhttps://git.kernel.org/stable/c/e07751d0527ccc2a1c32eb0b0b7da3b4b9b5381f\nhttps://git.kernel.org/stable/c/fff1059d139ef798bab917990524faaf25854ca8"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2b74b0a04d3e9f9f08ff026e5663dce88ff94e52,e07751d0527ccc2a1c32eb0b0b7da3b4b9b5381f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2b74b0a04d3e9f9f08ff026e5663dce88ff94e52,fff1059d139ef798bab917990524faaf25854ca8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2b74b0a04d3e9f9f08ff026e5663dce88ff94e52,40c706a0224bde194667e3378c689b542fec4b44)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2b74b0a04d3e9f9f08ff026e5663dce88ff94e52,41fd5f2fb0027d3773ae949e3247c2e0a2a7fe5c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2b74b0a04d3e9f9f08ff026e5663dce88ff94e52,1febec7e47cdcd01f43fb0211094e3010474666e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "f7e0611e207d8908c4f2858e244370529a76dbf7"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "b88ad6e714284b33a47834f5f2a294c2b37c66aa"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "471b23586387a32857778c511be60ab31c98dcfd"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "4f529c4d1e436230d3af7c09a3239677a14d2b46"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "ae6a5394d9fbe118bc95cfe376d6a9d91d7547e8"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "5bdf93a2f5459f944b416b188178ca4a92fd206f"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "ff3ba016263ee93a1c6209bf5ab1599de7ab1512"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "e7ca00f35d8a17af1ae19d529193ebc21bfda164"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.9.235,4.10)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.14.196,4.15)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.19.143,4.20)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.4.62,5.5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.8.6,5.9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.14.328,4.15)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.19.297,4.20)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.4.259,5.5)"}}], "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": "5.9"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.9)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,8.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc5,*]"}}], "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": "2026-08-10T16:45:03.476089+00:00", "updated": "2026-08-13T06:30:05.406741+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}