{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23061", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.952Z", "datePublished": "2026-02-04T16:07:43.626Z", "dateUpdated": "2026-02-09T08:37:59.685Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-02-09T08:37:59.685Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: kvaser_usb: kvaser_usb_read_bulk_callback(): fix URB memory leak\n\nFix similar memory leak as in commit 7352e1d5932a (\"can: gs_usb:\ngs_usb_receive_bulk_callback(): fix URB memory leak\").\n\nIn kvaser_usb_set_{,data_}bittiming() -> kvaser_usb_setup_rx_urbs(), the\nURBs for USB-in transfers are allocated, added to the dev->rx_submitted\nanchor and submitted. In the complete callback\nkvaser_usb_read_bulk_callback(), the URBs are processed and resubmitted. In\nkvaser_usb_remove_interfaces() the URBs are freed by calling\nusb_kill_anchored_urbs(&dev->rx_submitted).\n\nHowever, this does not take into account that the USB framework unanchors\nthe URB before the complete function is called. This means that once an\nin-URB has been completed, it is no longer anchored and is ultimately not\nreleased in usb_kill_anchored_urbs().\n\nFix the memory leak by anchoring the URB in the\nkvaser_usb_read_bulk_callback() to the dev->rx_submitted anchor."}], "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/kvaser_usb/kvaser_usb_core.c"], "versions": [{"version": "080f40a6fa28dab299da7a652e444b1e2d9231e7", "lessThan": "d9d824582f2ec76459ffab449e9b05c7bc49645c", "status": "affected", "versionType": "git"}, {"version": "080f40a6fa28dab299da7a652e444b1e2d9231e7", "lessThan": "40a3334ffda479c63e416e61ff086485e24401f7", "status": "affected", "versionType": "git"}, {"version": "080f40a6fa28dab299da7a652e444b1e2d9231e7", "lessThan": "c1b39fa24c140bc616f51fef4175c1743e2bb132", "status": "affected", "versionType": "git"}, {"version": "080f40a6fa28dab299da7a652e444b1e2d9231e7", "lessThan": "7c308f7530bffafa994e0aa8dc651a312f4b9ff4", "status": "affected", "versionType": "git"}, {"version": "080f40a6fa28dab299da7a652e444b1e2d9231e7", "lessThan": "94a7fc42e21c7d9d1c49778cd1db52de5df52a01", "status": "affected", "versionType": "git"}, {"version": "080f40a6fa28dab299da7a652e444b1e2d9231e7", "lessThan": "3b1a593eab941c3f32417896cc7df564191f2482", "status": "affected", "versionType": "git"}, {"version": "080f40a6fa28dab299da7a652e444b1e2d9231e7", "lessThan": "248e8e1a125fa875158df521b30f2cc7e27eeeaa", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c"], "versions": [{"version": "3.8", "status": "affected"}, {"version": "0", "lessThan": "3.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.249", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.199", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.162", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.122", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.68", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.8", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "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": "3.8", "versionEndExcluding": "5.10.249"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "5.15.199"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.1.162"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.6.122"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.12.68"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.18.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d9d824582f2ec76459ffab449e9b05c7bc49645c"}, {"url": "https://git.kernel.org/stable/c/40a3334ffda479c63e416e61ff086485e24401f7"}, {"url": "https://git.kernel.org/stable/c/c1b39fa24c140bc616f51fef4175c1743e2bb132"}, {"url": "https://git.kernel.org/stable/c/7c308f7530bffafa994e0aa8dc651a312f4b9ff4"}, {"url": "https://git.kernel.org/stable/c/94a7fc42e21c7d9d1c49778cd1db52de5df52a01"}, {"url": "https://git.kernel.org/stable/c/3b1a593eab941c3f32417896cc7df564191f2482"}, {"url": "https://git.kernel.org/stable/c/248e8e1a125fa875158df521b30f2cc7e27eeeaa"}], "title": "can: kvaser_usb: kvaser_usb_read_bulk_callback(): fix URB memory leak", "x_generator": {"engine": "bippy-1.2.0"}}}}

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In the complete callback\nkvaser_usb_read_bulk_callback(), the URBs are processed and resubmitted. In\nkvaser_usb_remove_interfaces() the URBs are freed by calling\nusb_kill_anchored_urbs(&dev->rx_submitted).\n\nHowever, this does not take into account that the USB framework unanchors\nthe URB before the complete function is called. This means that once an\nin-URB has been completed, it is no longer anchored and is ultimately not\nreleased in usb_kill_anchored_urbs().\n\nFix the memory leak by anchoring the URB in the\nkvaser_usb_read_bulk_callback() to the dev->rx_submitted anchor."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncan: kvaser_usb: kvaser_usb_read_bulk_callback(): corregir fuga de memoria de URB\n\nCorregir fuga de memoria similar a la del commit 7352e1d5932a ('can: gs_usb: gs_usb_receive_bulk_callback(): corregir fuga de memoria de URB').\n\nEn kvaser_usb_set_{,data_}bittiming() -> kvaser_usb_setup_rx_urbs(), los URB para transferencias USB de entrada se asignan, se a\u00f1aden al ancla dev->rx_submitted y se env\u00edan. En la funci\u00f3n de devoluci\u00f3n de llamada completa kvaser_usb_read_bulk_callback(), los URB se procesan y se reenv\u00edan. En kvaser_usb_remove_interfaces(), los URB se liberan llamando a usb_kill_anchored_urbs(&dev->rx_submitted).\n\nSin embargo, esto no tiene en cuenta que el framework USB desancla el URB antes de que se llame a la funci\u00f3n completa. Esto significa que una vez que un URB de entrada ha sido completado, ya no est\u00e1 anclado y finalmente no se libera en usb_kill_anchored_urbs().\n\nCorregir la fuga de memoria anclando el URB en kvaser_usb_read_bulk_callback() al ancla dev->rx_submitted."}], "id": "CVE-2026-23061", "lastModified": "2026-03-13T21:28:28.673", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "[email protected]", "type": "Primary"}]}, "published": "2026-02-04T17:16:16.787", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/248e8e1a125fa875158df521b30f2cc7e27eeeaa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3b1a593eab941c3f32417896cc7df564191f2482"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/40a3334ffda479c63e416e61ff086485e24401f7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7c308f7530bffafa994e0aa8dc651a312f4b9ff4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/94a7fc42e21c7d9d1c49778cd1db52de5df52a01"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c1b39fa24c140bc616f51fef4175c1743e2bb132"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d9d824582f2ec76459ffab449e9b05c7bc49645c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: can: kvaser_usb: kvaser_usb_read_bulk_callback(): fix URB memory leak", "id": "2436756", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2436756"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2026-23061", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-02-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-23061\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23061\nhttps://lore.kernel.org/linux-cve-announce/2026020415-CVE-2026-23061-31be@gregkh/T"], "threat_severity": "Important"}