{"id":"CVE-2026-74459","state":"PUBLISHED","title":"can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure\n\nes58x_read_bulk_callback() resubmits the RX URB after processing a received\npacket. If the resubmit succeeds, the URB remains anchored and will be\nhandled by the normal RX path or by teardown.\n\nHowever, if usb_submit_urb() fails, the callback unanchors the URB and then\nreturns directly. This skips the existing free_urb path, so the coherent\ntransfer buffer allocated with usb_alloc_coherent() is not released.\n\nReuse the existing free_urb path after a resubmit failure so that the RX\ncoherent buffer is freed before leaving the callback.","publishedAt":"2026-08-15T12:27:00.653Z","updatedAt":"2026-08-19T16:36:55.813Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7a0171b4921ad443fee5ed4fcb9d99fa4776edac","status":"affected","lessThan":"c7ddf119544eea2d8409e12471c3f9f36ca02e3f","versionType":"git"},{"version":"2185ea6e4ebcb61d1224dc7d187c59723cb5ad59","status":"affected","lessThan":"21da1a374769751546cc131e58a4d8bd968f57b2","versionType":"git"},{"version":"f6e90c113c92e83fc0963d5e60e16b0e8a268981","status":"affected","lessThan":"0ef136ba052101243ba117a1aca6f4a4c3a81142","versionType":"git"},{"version":"b878444519fa03a3edd287d1963cf79ef78be2f1","status":"affected","lessThan":"b85e5c310382803d27adf6fe6554d4208bc8951c","versionType":"git"},{"version":"18eee279e9b5bff0db1aca9475ae4bc12804f05c","status":"affected","lessThan":"c311f17c261fd375ddf5755f2ebe1f022c19c5b0","versionType":"git"},{"version":"5eaad4f768266f1f17e01232ffe2ef009f8129b7","status":"affected","lessThan":"19c6c8c6cd5dd14fab5fcd744584812a57cbb78d","versionType":"git"},{"version":"5eaad4f768266f1f17e01232ffe2ef009f8129b7","status":"affected","lessThan":"7a0cf2b2497c757c3cb1286eddf2986abb0d387b","versionType":"git"},{"version":"b8f9ca88253574638bcff38900a4c28d570b1919","status":"affected","versionType":"git"},{"version":"5.15.203","status":"affected","lessThan":"5.15.216","versionType":"semver"},{"version":"6.1.167","status":"affected","lessThan":"6.1.183","versionType":"semver"},{"version":"6.6.130","status":"affected","lessThan":"6.6.151","versionType":"semver"},{"version":"6.12.77","status":"affected","lessThan":"6.12.103","versionType":"semver"},{"version":"6.18.17","status":"affected","lessThan":"6.18.44","versionType":"semver"},{"version":"6.19.7","status":"affected","lessThan":"6.20","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/can/usb/etas_es58x/es58x_core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.0","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/etas_es58x/es58x_core.c"]}],"references":["https://git.kernel.org/stable/c/c7ddf119544eea2d8409e12471c3f9f36ca02e3f","https://git.kernel.org/stable/c/21da1a374769751546cc131e58a4d8bd968f57b2","https://git.kernel.org/stable/c/0ef136ba052101243ba117a1aca6f4a4c3a81142","https://git.kernel.org/stable/c/b85e5c310382803d27adf6fe6554d4208bc8951c","https://git.kernel.org/stable/c/c311f17c261fd375ddf5755f2ebe1f022c19c5b0","https://git.kernel.org/stable/c/19c6c8c6cd5dd14fab5fcd744584812a57cbb78d","https://git.kernel.org/stable/c/7a0cf2b2497c757c3cb1286eddf2986abb0d387b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74459.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74459","state":"PUBLISHED","datePublished":"2026-08-15T12:27:00.653Z","dateUpdated":"2026-08-19T16:36:55.813Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.900Z"},"containers":{"cna":{"title":"can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure\n\nes58x_read_bulk_callback() resubmits the RX URB after processing a received\npacket. If the resubmit succeeds, the URB remains anchored and will be\nhandled by the normal RX path or by teardown.\n\nHowever, if usb_submit_urb() fails, the callback unanchors the URB and then\nreturns directly. This skips the existing free_urb path, so the coherent\ntransfer buffer allocated with usb_alloc_coherent() is not released.\n\nReuse the existing free_urb path after a resubmit failure so that the RX\ncoherent buffer is freed before leaving the callback."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7a0171b4921ad443fee5ed4fcb9d99fa4776edac","status":"affected","lessThan":"c7ddf119544eea2d8409e12471c3f9f36ca02e3f","versionType":"git"},{"version":"2185ea6e4ebcb61d1224dc7d187c59723cb5ad59","status":"affected","lessThan":"21da1a374769751546cc131e58a4d8bd968f57b2","versionType":"git"},{"version":"f6e90c113c92e83fc0963d5e60e16b0e8a268981","status":"affected","lessThan":"0ef136ba052101243ba117a1aca6f4a4c3a81142","versionType":"git"},{"version":"b878444519fa03a3edd287d1963cf79ef78be2f1","status":"affected","lessThan":"b85e5c310382803d27adf6fe6554d4208bc8951c","versionType":"git"},{"version":"18eee279e9b5bff0db1aca9475ae4bc12804f05c","status":"affected","lessThan":"c311f17c261fd375ddf5755f2ebe1f022c19c5b0","versionType":"git"},{"version":"5eaad4f768266f1f17e01232ffe2ef009f8129b7","status":"affected","lessThan":"19c6c8c6cd5dd14fab5fcd744584812a57cbb78d","versionType":"git"},{"version":"5eaad4f768266f1f17e01232ffe2ef009f8129b7","status":"affected","lessThan":"7a0cf2b2497c757c3cb1286eddf2986abb0d387b","versionType":"git"},{"version":"b8f9ca88253574638bcff38900a4c28d570b1919","status":"affected","versionType":"git"},{"version":"5.15.203","status":"affected","lessThan":"5.15.216","versionType":"semver"},{"version":"6.1.167","status":"affected","lessThan":"6.1.183","versionType":"semver"},{"version":"6.6.130","status":"affected","lessThan":"6.6.151","versionType":"semver"},{"version":"6.12.77","status":"affected","lessThan":"6.12.103","versionType":"semver"},{"version":"6.18.17","status":"affected","lessThan":"6.18.44","versionType":"semver"},{"version":"6.19.7","status":"affected","lessThan":"6.20","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/can/usb/etas_es58x/es58x_core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.0","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/etas_es58x/es58x_core.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c7ddf119544eea2d8409e12471c3f9f36ca02e3f"},{"url":"https://git.kernel.org/stable/c/21da1a374769751546cc131e58a4d8bd968f57b2"},{"url":"https://git.kernel.org/stable/c/0ef136ba052101243ba117a1aca6f4a4c3a81142"},{"url":"https://git.kernel.org/stable/c/b85e5c310382803d27adf6fe6554d4208bc8951c"},{"url":"https://git.kernel.org/stable/c/c311f17c261fd375ddf5755f2ebe1f022c19c5b0"},{"url":"https://git.kernel.org/stable/c/19c6c8c6cd5dd14fab5fcd744584812a57cbb78d"},{"url":"https://git.kernel.org/stable/c/7a0cf2b2497c757c3cb1286eddf2986abb0d387b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-19T16:36:55.813Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.203","versionEndExcluding":"5.15.216"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.167","versionEndExcluding":"6.1.183"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.130","versionEndExcluding":"6.6.151"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.77","versionEndExcluding":"6.12.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18.17","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0","versionEndExcluding":"7.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0","versionEndExcluding":"7.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19.7"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}