CVE-2026-74459

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74459", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.900Z", "datePublished": "2026-08-15T12:27:00.653Z", "dateUpdated": "2026-08-19T16:36:55.813Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:36:55.813Z"}, "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/can/usb/etas_es58x/es58x_core.c"], "versions": [{"version": "7a0171b4921ad443fee5ed4fcb9d99fa4776edac", "lessThan": "c7ddf119544eea2d8409e12471c3f9f36ca02e3f", "status": "affected", "versionType": "git"}, {"version": "2185ea6e4ebcb61d1224dc7d187c59723cb5ad59", "lessThan": "21da1a374769751546cc131e58a4d8bd968f57b2", "status": "affected", "versionType": "git"}, {"version": "f6e90c113c92e83fc0963d5e60e16b0e8a268981", "lessThan": "0ef136ba052101243ba117a1aca6f4a4c3a81142", "status": "affected", "versionType": "git"}, {"version": "b878444519fa03a3edd287d1963cf79ef78be2f1", "lessThan": "b85e5c310382803d27adf6fe6554d4208bc8951c", "status": "affected", "versionType": "git"}, {"version": "18eee279e9b5bff0db1aca9475ae4bc12804f05c", "lessThan": "c311f17c261fd375ddf5755f2ebe1f022c19c5b0", "status": "affected", "versionType": "git"}, {"version": "5eaad4f768266f1f17e01232ffe2ef009f8129b7", "lessThan": "19c6c8c6cd5dd14fab5fcd744584812a57cbb78d", "status": "affected", "versionType": "git"}, {"version": "5eaad4f768266f1f17e01232ffe2ef009f8129b7", "lessThan": "7a0cf2b2497c757c3cb1286eddf2986abb0d387b", "status": "affected", "versionType": "git"}, {"version": "b8f9ca88253574638bcff38900a4c28d570b1919", "status": "affected", "versionType": "git"}, {"version": "5.15.203", "lessThan": "5.15.216", "status": "affected", "versionType": "semver"}, {"version": "6.1.167", "lessThan": "6.1.183", "status": "affected", "versionType": "semver"}, {"version": "6.6.130", "lessThan": "6.6.151", "status": "affected", "versionType": "semver"}, {"version": "6.12.77", "lessThan": "6.12.103", "status": "affected", "versionType": "semver"}, {"version": "6.18.17", "lessThan": "6.18.44", "status": "affected", "versionType": "semver"}, {"version": "6.19.7", "lessThan": "6.20", "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/net/can/usb/etas_es58x/es58x_core.c"], "versions": [{"version": "7.0", "status": "affected"}, {"version": "0", "lessThan": "7.0", "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": "6.6.151", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.103", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.44", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.8", "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": "5.15.203", "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"}]}]}], "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"}], "title": "can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/can/usb/etas_es58x/es58x_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c7ddf119544eea2d8409e12471c3f9f36ca02e3f", "status": "affected", "version": "7a0171b4921ad443fee5ed4fcb9d99fa4776edac", "versionType": "git"}, {"lessThan": "21da1a374769751546cc131e58a4d8bd968f57b2", "status": "affected", "version": "2185ea6e4ebcb61d1224dc7d187c59723cb5ad59", "versionType": "git"}, {"lessThan": "0ef136ba052101243ba117a1aca6f4a4c3a81142", "status": "affected", "version": "f6e90c113c92e83fc0963d5e60e16b0e8a268981", "versionType": "git"}, {"lessThan": "b85e5c310382803d27adf6fe6554d4208bc8951c", "status": "affected", "version": "b878444519fa03a3edd287d1963cf79ef78be2f1", "versionType": "git"}, {"lessThan": "c311f17c261fd375ddf5755f2ebe1f022c19c5b0", "status": "affected", "version": "18eee279e9b5bff0db1aca9475ae4bc12804f05c", "versionType": "git"}, {"lessThan": "19c6c8c6cd5dd14fab5fcd744584812a57cbb78d", "status": "affected", "version": "5eaad4f768266f1f17e01232ffe2ef009f8129b7", "versionType": "git"}, {"lessThan": "7a0cf2b2497c757c3cb1286eddf2986abb0d387b", "status": "affected", "version": "5eaad4f768266f1f17e01232ffe2ef009f8129b7", "versionType": "git"}, {"status": "affected", "version": "b8f9ca88253574638bcff38900a4c28d570b1919", "versionType": "git"}, {"lessThan": "5.15.216", "status": "affected", "version": "5.15.203", "versionType": "semver"}, {"lessThan": "6.1.183", "status": "affected", "version": "6.1.167", "versionType": "semver"}, {"lessThan": "6.6.151", "status": "affected", "version": "6.6.130", "versionType": "semver"}, {"lessThan": "6.12.103", "status": "affected", "version": "6.12.77", "versionType": "semver"}, {"lessThan": "6.18.44", "status": "affected", "version": "6.18.17", "versionType": "semver"}, {"lessThan": "6.20", "status": "affected", "version": "6.19.7", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/can/usb/etas_es58x/es58x_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.0"}, {"lessThan": "7.0", "status": "unaffected", "version": "0", "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": "6.6.151", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.103", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.44", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.8", "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\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."}], "id": "CVE-2026-74459", "lastModified": "2026-08-19T17:21:02.803", "metrics": {}, "published": "2026-08-15T13:17:50.543", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0ef136ba052101243ba117a1aca6f4a4c3a81142"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/19c6c8c6cd5dd14fab5fcd744584812a57cbb78d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/21da1a374769751546cc131e58a4d8bd968f57b2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7a0cf2b2497c757c3cb1286eddf2986abb0d387b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b85e5c310382803d27adf6fe6554d4208bc8951c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c311f17c261fd375ddf5755f2ebe1f022c19c5b0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c7ddf119544eea2d8409e12471c3f9f36ca02e3f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure", "id": "2516985", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516985"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncan: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure\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.\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.\nReuse the existing free_urb path after a resubmit failure so that the RX\ncoherent buffer is freed before leaving the callback.", "A flaw was found in the Linux kernel's `can: etas_es58x` module. A memory leak occurs in the `es58x_read_bulk_callback()` function when an Urban Request Block (URB) resubmission fails. This failure prevents the proper release of the associated receive (RX) buffer, leading to a gradual exhaustion of system memory. This can ultimately result in a denial of service (DoS) for affected systems."], "name": "CVE-2026-74459", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74459\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74459\nhttps://lore.kernel.org/linux-cve-announce/2026081532-CVE-2026-74459-bf7d@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f6e90c113c92e83fc0963d5e60e16b0e8a268981,0ef136ba052101243ba117a1aca6f4a4c3a81142)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b878444519fa03a3edd287d1963cf79ef78be2f1,b85e5c310382803d27adf6fe6554d4208bc8951c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[18eee279e9b5bff0db1aca9475ae4bc12804f05c,c311f17c261fd375ddf5755f2ebe1f022c19c5b0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5eaad4f768266f1f17e01232ffe2ef009f8129b7,19c6c8c6cd5dd14fab5fcd744584812a57cbb78d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5eaad4f768266f1f17e01232ffe2ef009f8129b7,7a0cf2b2497c757c3cb1286eddf2986abb0d387b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "7a0171b4921ad443fee5ed4fcb9d99fa4776edac"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "2185ea6e4ebcb61d1224dc7d187c59723cb5ad59"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "b8f9ca88253574638bcff38900a4c28d570b1919"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.130,6.6.151)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.77,6.12.103)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.18.17,6.18.44)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.15.203,5.16)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.167,6.2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.19.7,6.20)"}}], "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": "7.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.151,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.103,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.44,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.8,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc6,*]"}}], "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": "2026-08-15T15:45:06.745660+00:00", "updated": "2026-08-21T23:30:17.183954+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}