{"id":"CVE-2026-74460","state":"PUBLISHED","title":"can: ems_usb: validate CPC message lengths","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ems_usb: validate CPC message lengths\n\nems_usb_read_bulk_callback() walks CPC messages packed in one USB\nreceive buffer.\n\nCheck that each declared message fits in the URB payload. Also require the\ntype-specific payload to cover the fields used by the CAN, state, error and\noverrun handlers.","publishedAt":"2026-08-15T12:27:01.274Z","updatedAt":"2026-10-03T10:56:02.281Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"1c380a332e342b7d58c86c4f556cb0823b16a9b8","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"db5655287d78f00daf98888a520bb8da4d30126d","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"ce8125566b1d0b0f16449407e014addf451804ea","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"0b9090717c7e2184e2c427bbcc752f295116ac1d","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"0b23144c59c126beb4a7761a85a194ae0fe668a5","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"df3ac2a672a5284441f120d486acabdd6740fc2a","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"02925f51377f2a42a6724f00549167499c9302e5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/can/usb/ems_usb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.32","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.32","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.216","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.183","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.151","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.103","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.8","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/can/usb/ems_usb.c"]}],"references":["https://git.kernel.org/stable/c/1c380a332e342b7d58c86c4f556cb0823b16a9b8","https://git.kernel.org/stable/c/bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6","https://git.kernel.org/stable/c/db5655287d78f00daf98888a520bb8da4d30126d","https://git.kernel.org/stable/c/ce8125566b1d0b0f16449407e014addf451804ea","https://git.kernel.org/stable/c/0b9090717c7e2184e2c427bbcc752f295116ac1d","https://git.kernel.org/stable/c/0b23144c59c126beb4a7761a85a194ae0fe668a5","https://git.kernel.org/stable/c/df3ac2a672a5284441f120d486acabdd6740fc2a","https://git.kernel.org/stable/c/02925f51377f2a42a6724f00549167499c9302e5"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74460.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74460","state":"PUBLISHED","datePublished":"2026-08-15T12:27:01.274Z","dateUpdated":"2026-10-03T10:56:02.281Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.901Z"},"containers":{"cna":{"title":"can: ems_usb: validate CPC message lengths","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ems_usb: validate CPC message lengths\n\nems_usb_read_bulk_callback() walks CPC messages packed in one USB\nreceive buffer.\n\nCheck that each declared message fits in the URB payload. Also require the\ntype-specific payload to cover the fields used by the CAN, state, error and\noverrun handlers."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"1c380a332e342b7d58c86c4f556cb0823b16a9b8","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"db5655287d78f00daf98888a520bb8da4d30126d","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"ce8125566b1d0b0f16449407e014addf451804ea","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"0b9090717c7e2184e2c427bbcc752f295116ac1d","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"0b23144c59c126beb4a7761a85a194ae0fe668a5","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"df3ac2a672a5284441f120d486acabdd6740fc2a","versionType":"git"},{"version":"702171adeed3607ee9603ec30ce081411e36ae42","status":"affected","lessThan":"02925f51377f2a42a6724f00549167499c9302e5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/can/usb/ems_usb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.32","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.32","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.216","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.183","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.151","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.103","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.8","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/can/usb/ems_usb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/1c380a332e342b7d58c86c4f556cb0823b16a9b8"},{"url":"https://git.kernel.org/stable/c/bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6"},{"url":"https://git.kernel.org/stable/c/db5655287d78f00daf98888a520bb8da4d30126d"},{"url":"https://git.kernel.org/stable/c/ce8125566b1d0b0f16449407e014addf451804ea"},{"url":"https://git.kernel.org/stable/c/0b9090717c7e2184e2c427bbcc752f295116ac1d"},{"url":"https://git.kernel.org/stable/c/0b23144c59c126beb4a7761a85a194ae0fe668a5"},{"url":"https://git.kernel.org/stable/c/df3ac2a672a5284441f120d486acabdd6740fc2a"},{"url":"https://git.kernel.org/stable/c/02925f51377f2a42a6724f00549167499c9302e5"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-03T10:56:02.281Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.32","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.32","versionEndExcluding":"5.15.216"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.32","versionEndExcluding":"6.1.183"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.32","versionEndExcluding":"6.6.151"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.32","versionEndExcluding":"6.12.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.32","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.32","versionEndExcluding":"7.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.32","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}