{"id":"CVE-2026-46103","state":"PUBLISHED","title":"can: ucan: fix devres lifetime","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ucan: fix devres lifetime\n\nUSB drivers bind to USB interfaces and any device managed resources\nshould have their lifetime tied to the interface rather than parent USB\ndevice. This avoids issues like memory leaks when drivers are unbound\nwithout their devices being physically disconnected (e.g. on probe\ndeferral or configuration changes).\n\nFix the control message buffer lifetime so that it is released on driver\nunbind.","publishedAt":"2026-05-27T12:59:11.533Z","updatedAt":"2026-06-19T11:59:29.306Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"a90f0815aaa9c629ac4750e7c71c357dd7f231d7","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"cb2e41e87a2893345859440017e7178bf7a4c70d","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"3df5b9110ac08f67ccfe382fc172bfee95688eec","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"4b7d07747400cfd7eff1ba7b8b5a7c8d5a58f705","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"10b7b676b78a7bd888d19729b459aad7fc1f428b","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"c524c124e3094d2de12235a513854c03d06a2b58","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"c0d3ccc6929e4509076df8f30a4fb1dc5018b0ae","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"fed4626501c871890da287bec62a96e52da1af89","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/can/usb/ucan.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.19","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.86","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.27","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","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/ucan.c"]}],"references":["https://git.kernel.org/stable/c/a90f0815aaa9c629ac4750e7c71c357dd7f231d7","https://git.kernel.org/stable/c/cb2e41e87a2893345859440017e7178bf7a4c70d","https://git.kernel.org/stable/c/3df5b9110ac08f67ccfe382fc172bfee95688eec","https://git.kernel.org/stable/c/4b7d07747400cfd7eff1ba7b8b5a7c8d5a58f705","https://git.kernel.org/stable/c/10b7b676b78a7bd888d19729b459aad7fc1f428b","https://git.kernel.org/stable/c/c524c124e3094d2de12235a513854c03d06a2b58","https://git.kernel.org/stable/c/c0d3ccc6929e4509076df8f30a4fb1dc5018b0ae","https://git.kernel.org/stable/c/fed4626501c871890da287bec62a96e52da1af89"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46103.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46103","state":"PUBLISHED","datePublished":"2026-05-27T12:59:11.533Z","dateUpdated":"2026-06-19T11:59:29.306Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.097Z"},"containers":{"cna":{"title":"can: ucan: fix devres lifetime","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ucan: fix devres lifetime\n\nUSB drivers bind to USB interfaces and any device managed resources\nshould have their lifetime tied to the interface rather than parent USB\ndevice. This avoids issues like memory leaks when drivers are unbound\nwithout their devices being physically disconnected (e.g. on probe\ndeferral or configuration changes).\n\nFix the control message buffer lifetime so that it is released on driver\nunbind."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"a90f0815aaa9c629ac4750e7c71c357dd7f231d7","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"cb2e41e87a2893345859440017e7178bf7a4c70d","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"3df5b9110ac08f67ccfe382fc172bfee95688eec","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"4b7d07747400cfd7eff1ba7b8b5a7c8d5a58f705","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"10b7b676b78a7bd888d19729b459aad7fc1f428b","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"c524c124e3094d2de12235a513854c03d06a2b58","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"c0d3ccc6929e4509076df8f30a4fb1dc5018b0ae","versionType":"git"},{"version":"9f2d3eae88d26c29d96e42983b755940d9169cd9","status":"affected","lessThan":"fed4626501c871890da287bec62a96e52da1af89","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/can/usb/ucan.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.19","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.86","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.27","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","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/ucan.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a90f0815aaa9c629ac4750e7c71c357dd7f231d7"},{"url":"https://git.kernel.org/stable/c/cb2e41e87a2893345859440017e7178bf7a4c70d"},{"url":"https://git.kernel.org/stable/c/3df5b9110ac08f67ccfe382fc172bfee95688eec"},{"url":"https://git.kernel.org/stable/c/4b7d07747400cfd7eff1ba7b8b5a7c8d5a58f705"},{"url":"https://git.kernel.org/stable/c/10b7b676b78a7bd888d19729b459aad7fc1f428b"},{"url":"https://git.kernel.org/stable/c/c524c124e3094d2de12235a513854c03d06a2b58"},{"url":"https://git.kernel.org/stable/c/c0d3ccc6929e4509076df8f30a4fb1dc5018b0ae"},{"url":"https://git.kernel.org/stable/c/fed4626501c871890da287bec62a96e52da1af89"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-19T11:59:29.306Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.10.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.12.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.18.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}