{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43007", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.974Z", "datePublished": "2026-05-01T14:15:14.914Z", "dateUpdated": "2026-05-01T14:15:14.914Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-01T14:15:14.914Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/qaic: Handle DBC deactivation if the owner went away\n\nWhen a DBC is released, the device sends a QAIC_TRANS_DEACTIVATE_FROM_DEV\ntransaction to the host over the QAIC_CONTROL MHI channel. QAIC handles\nthis by calling decode_deactivate() to release the resources allocated for\nthat DBC. Since that handling is done in the qaic_manage_ioctl() context,\nif the user goes away before receiving and handling the deactivation, the\nhost will be out-of-sync with the DBCs available for use, and the DBC\nresources will not be freed unless the device is removed. If another user\nloads and requests to activate a network, then the device assigns the same\nDBC to that network, QAIC will \"indefinitely\" wait for dbc->in_use = false,\nleading the user process to hang.\n\nAs a solution to this, handle QAIC_TRANS_DEACTIVATE_FROM_DEV transactions\nthat are received after the user has gone away."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/accel/qaic/qaic_control.c"], "versions": [{"version": "129776ac2e38231fa9c02ce20e116c99de291666", "lessThan": "2dd67966f39a2abf8ccb4865031c722e40e01b7f", "status": "affected", "versionType": "git"}, {"version": "129776ac2e38231fa9c02ce20e116c99de291666", "lessThan": "08021f2d4a557d6491e3bcc288e96425f50aa3cf", "status": "affected", "versionType": "git"}, {"version": "129776ac2e38231fa9c02ce20e116c99de291666", "lessThan": "f403094d9075d7c565a3d81002b781c325cb3c07", "status": "affected", "versionType": "git"}, {"version": "129776ac2e38231fa9c02ce20e116c99de291666", "lessThan": "ee0180e77e6c8482644569632065411de844c515", "status": "affected", "versionType": "git"}, {"version": "129776ac2e38231fa9c02ce20e116c99de291666", "lessThan": "2feec5ae5df785658924ab6bd91280dc3926507c", "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/accel/qaic/qaic_control.c"], "versions": [{"version": "6.4", "status": "affected"}, {"version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.134", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.81", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.22", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.12", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "6.4", "versionEndExcluding": "6.6.134"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.12.81"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.18.22"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.19.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2dd67966f39a2abf8ccb4865031c722e40e01b7f"}, {"url": "https://git.kernel.org/stable/c/08021f2d4a557d6491e3bcc288e96425f50aa3cf"}, {"url": "https://git.kernel.org/stable/c/f403094d9075d7c565a3d81002b781c325cb3c07"}, {"url": "https://git.kernel.org/stable/c/ee0180e77e6c8482644569632065411de844c515"}, {"url": "https://git.kernel.org/stable/c/2feec5ae5df785658924ab6bd91280dc3926507c"}], "title": "accel/qaic: Handle DBC deactivation if the owner went away", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/qaic: Handle DBC deactivation if the owner went away\n\nWhen a DBC is released, the device sends a QAIC_TRANS_DEACTIVATE_FROM_DEV\ntransaction to the host over the QAIC_CONTROL MHI channel. QAIC handles\nthis by calling decode_deactivate() to release the resources allocated for\nthat DBC. Since that handling is done in the qaic_manage_ioctl() context,\nif the user goes away before receiving and handling the deactivation, the\nhost will be out-of-sync with the DBCs available for use, and the DBC\nresources will not be freed unless the device is removed. If another user\nloads and requests to activate a network, then the device assigns the same\nDBC to that network, QAIC will \"indefinitely\" wait for dbc->in_use = false,\nleading the user process to hang.\n\nAs a solution to this, handle QAIC_TRANS_DEACTIVATE_FROM_DEV transactions\nthat are received after the user has gone away."}], "id": "CVE-2026-43007", "lastModified": "2026-05-01T15:24:14.893", "metrics": {}, "published": "2026-05-01T15:16:44.553", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/08021f2d4a557d6491e3bcc288e96425f50aa3cf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2dd67966f39a2abf8ccb4865031c722e40e01b7f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2feec5ae5df785658924ab6bd91280dc3926507c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ee0180e77e6c8482644569632065411de844c515"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f403094d9075d7c565a3d81002b781c325cb3c07"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: accel/qaic: Handle DBC deactivation if the owner went away", "id": "2464407", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464407"}, "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": ["A flaw was found in the accel/qaic component of the Linux kernel. When a user process terminates before the device's deactivation transaction for a Device-Bound Context (DBC) is fully processed, the host system can become out of sync with available DBCs. This can lead to a denial of service, where a subsequent user attempting to activate a network may experience their process hanging indefinitely if assigned the same DBC."], "name": "CVE-2026-43007", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "2026-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43007\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43007\nhttps://lore.kernel.org/linux-cve-announce/2026050154-CVE-2026-43007-469f@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[129776ac2e38231fa9c02ce20e116c99de291666,2dd67966f39a2abf8ccb4865031c722e40e01b7f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[129776ac2e38231fa9c02ce20e116c99de291666,08021f2d4a557d6491e3bcc288e96425f50aa3cf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[129776ac2e38231fa9c02ce20e116c99de291666,f403094d9075d7c565a3d81002b781c325cb3c07)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[129776ac2e38231fa9c02ce20e116c99de291666,ee0180e77e6c8482644569632065411de844c515)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[129776ac2e38231fa9c02ce20e116c99de291666,2feec5ae5df785658924ab6bd91280dc3926507c)"}}], "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": "semver", "value": "6.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.134,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.81,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.22,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.12,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "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": "2026-05-01T18:15:22.484599+00:00", "updated": "2026-05-01T23:15:29.821433+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-674"]}