{"api_version":"1","generated_at":"2026-07-23T14:03:26+00:00","cve":"CVE-2026-23031","urls":{"html":"https://cve.report/CVE-2026-23031","api":"https://cve.report/api/cve/CVE-2026-23031.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23031","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23031"},"summary":{"title":"can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak\n\nIn gs_can_open(), the URBs for USB-in transfers are allocated, added to the\nparent->rx_submitted anchor and submitted. In the complete callback\ngs_usb_receive_bulk_callback(), the URB is processed and resubmitted. In\ngs_can_close() the URBs are freed by calling\nusb_kill_anchored_urbs(parent->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 gs_can_close().\n\nFix the memory leak by anchoring the URB in the\ngs_usb_receive_bulk_callback() to the parent->rx_submitted anchor.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-01-31 12:16:06","updated_at":"2026-06-02 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RST2428P","vendor":"Siemens","versions":[{"lessThan":"V4.0","status":"affected","version":"0","versionType":"custom"}]}],"providerMetadata":{"dateUpdated":"2026-06-02T13:00:52.214Z","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","shortName":"siemens-SADP"},"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-253495.html"}],"x_adpType":"supplier"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/can/usb/gs_usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9c151898cc259a7784be60ba38664f42ede39b31","status":"affected","version":"d08e973a77d128b25e01a08c34d89593fdf222da","versionType":"git"},{"lessThan":"ec5ccc2af9e5b045671f3f604b57512feda8bcc5","status":"affected","version":"d08e973a77d128b25e01a08c34d89593fdf222da","versionType":"git"},{"lessThan":"f905bcfa971edb89e398c98957838d8c6381c0c7","status":"affected","version":"d08e973a77d128b25e01a08c34d89593fdf222da","versionType":"git"},{"lessThan":"08624b7206ddb9148eeffc2384ebda2c47b6d1e9","status":"affected","version":"d08e973a77d128b25e01a08c34d89593fdf222da","versionType":"git"},{"lessThan":"9f669a38ca70839229b7ba0f851820850a2fe1f7","status":"affected","version":"d08e973a77d128b25e01a08c34d89593fdf222da","versionType":"git"},{"lessThan":"7352e1d5932a0e777e39fa4b619801191f57e603","status":"affected","version":"d08e973a77d128b25e01a08c34d89593fdf222da","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/can/usb/gs_usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.16"},{"lessThan":"3.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.162","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.122","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.67","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.19","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.203","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.162","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.122","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.67","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.7","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19","versionStartIncluding":"3.16","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak\n\nIn gs_can_open(), the URBs for USB-in transfers are allocated, added to the\nparent->rx_submitted anchor and submitted. In the complete callback\ngs_usb_receive_bulk_callback(), the URB is processed and resubmitted. In\ngs_can_close() the URBs are freed by calling\nusb_kill_anchored_urbs(parent->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 gs_can_close().\n\nFix the memory leak by anchoring the URB in the\ngs_usb_receive_bulk_callback() to the parent->rx_submitted anchor."}],"providerMetadata":{"dateUpdated":"2026-05-11T21:58:40.032Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/9c151898cc259a7784be60ba38664f42ede39b31"},{"url":"https://git.kernel.org/stable/c/ec5ccc2af9e5b045671f3f604b57512feda8bcc5"},{"url":"https://git.kernel.org/stable/c/f905bcfa971edb89e398c98957838d8c6381c0c7"},{"url":"https://git.kernel.org/stable/c/08624b7206ddb9148eeffc2384ebda2c47b6d1e9"},{"url":"https://git.kernel.org/stable/c/9f669a38ca70839229b7ba0f851820850a2fe1f7"},{"url":"https://git.kernel.org/stable/c/7352e1d5932a0e777e39fa4b619801191f57e603"}],"title":"can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-23031","datePublished":"2026-01-31T11:42:09.276Z","dateReserved":"2026-01-13T15:37:45.942Z","dateUpdated":"2026-06-02T13:00:52.214Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-01-31 12:16:06","lastModifiedDate":"2026-06-02 14:16:46","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"23031","Ordinal":"1","Title":"can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak","CVE":"CVE-2026-23031","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23031","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak\n\nIn gs_can_open(), the URBs for USB-in transfers are allocated, added to the\nparent->rx_submitted anchor and submitted. In the complete callback\ngs_usb_receive_bulk_callback(), the URB is processed and resubmitted. In\ngs_can_close() the URBs are freed by calling\nusb_kill_anchored_urbs(parent->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 gs_can_close().\n\nFix the memory leak by anchoring the URB in the\ngs_usb_receive_bulk_callback() to the parent->rx_submitted anchor.","Type":"Description","Title":"can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak"}]}}}