CVE-2024-49874

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And svc_i3c_master_ibi_work can start the\nhj_work, svc_i3c_master_irq_handler can start the ibi_work.\n\nIf we remove the module which will call svc_i3c_master_remove to\nmake cleanup, it will free master->base through i3c_master_unregister\nwhile the work mentioned above will be used. The sequence of operations\nthat may lead to a UAF bug is as follows:\n\nCPU0 CPU1\n\n | svc_i3c_master_hj_work\nsvc_i3c_master_remove |\ni3c_master_unregister(&master->base)|\ndevice_unregister(&master->dev) |\ndevice_release |\n//free master->base |\n | i3c_master_do_daa(&master->base)\n | //use master->base\n\nFix it by ensuring that the work is canceled before proceeding with the\ncleanup in svc_i3c_master_remove."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The UAF is triggered through local operations on the device \u2014 driver unbind/module removal via sysfs or rmmod on the platform device \u2014 combined with in-kernel workqueue activity on the local I3C controller. No network or remote protocol data reaches this path.\nAC:L - The attacker drives one side of the race directly (repeatable bind/unbind cycles) while the hot-join work is generated by ordinary I3C bus activity, and the window can be widened and retried indefinitely until it is won; per kernel scoring practice a UAF race whose triggering side is attacker-initiated is Low.\nPR:L - The teardown path is reached from local userspace device-management interfaces on the I3C master device, and no authentication beyond ordinary local access to the device/driver interfaces is required to keep re-triggering the removal path; scored at the lower privilege tier consistent with comparable driver-removal UAFs.\nUI:N - No victim action is needed \u2014 the removal path and the hot-join work both proceed automatically once the unbind is issued and a hot-join IBI arrives.\nS:U - The corruption and its consequences are confined to the kernel's own memory and security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The use-after-free lets `i3c_master_do_daa()` read `master->base`, `master->bus`, and `master->ops` out of a freed and potentially re-allocated slab object, so an attacker who grooms the heap can read back kernel memory contents through the stale object.\nI:H - The freed object is dereferenced for an indirect call (`master->ops->do_daa(master)`) and for lock manipulation, so heap spraying over the freed allocation gives a control-flow hijack and arbitrary-write primitive rather than a mere stale read.\nA:H - Even unexploited, the use-after-free corrupts kernel state and dereferences freed pointers, reliably producing an oops or panic and taking down the system."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/i3c/master/svc-i3c-master.c"], "versions": [{"version": "87e0f28eda36c7843523aa8dd0c5dab3331e9718", "lessThan": "56bddf543d4d7ddeff3f87b554ddacfdf086bffe", "status": "affected", "versionType": "git"}, {"version": "0f74f8b6675cc36d689abb4d9b3d75ab4049b7d7", "lessThan": "4ac637122930cc4ab7e2c22e364cf3aaf96b05b1", "status": "affected", "versionType": "git"}, {"version": "0f74f8b6675cc36d689abb4d9b3d75ab4049b7d7", "lessThan": "4318998892bf8fe99f97bea18c37ae7b685af75a", "status": "affected", "versionType": "git"}, {"version": "0f74f8b6675cc36d689abb4d9b3d75ab4049b7d7", "lessThan": "27b55724d3f781dd6e635e89dc6e2fd78fa81a00", "status": "affected", "versionType": "git"}, {"version": "0f74f8b6675cc36d689abb4d9b3d75ab4049b7d7", "lessThan": "61850725779709369c7e907ae8c7c75dc7cec4f3", "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/i3c/master/svc-i3c-master.c"], "versions": [{"version": "6.4", "status": "affected"}, {"version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.55", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.10.14", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.3", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "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": "6.6.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.10.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.11.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/56bddf543d4d7ddeff3f87b554ddacfdf086bffe"}, {"url": "https://git.kernel.org/stable/c/4ac637122930cc4ab7e2c22e364cf3aaf96b05b1"}, {"url": "https://git.kernel.org/stable/c/4318998892bf8fe99f97bea18c37ae7b685af75a"}, {"url": "https://git.kernel.org/stable/c/27b55724d3f781dd6e635e89dc6e2fd78fa81a00"}, {"url": "https://git.kernel.org/stable/c/61850725779709369c7e907ae8c7c75dc7cec4f3"}], "title": "i3c: master: svc: Fix use after free vulnerability in svc_i3c_master Driver Due to Race Condition", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-49874", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-22T13:46:33.404172Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:48:51.538Z"}}]}}

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And svc_i3c_master_ibi_work can start the\nhj_work, svc_i3c_master_irq_handler can start the ibi_work.\n\nIf we remove the module which will call svc_i3c_master_remove to\nmake cleanup, it will free master->base through i3c_master_unregister\nwhile the work mentioned above will be used. The sequence of operations\nthat may lead to a UAF bug is as follows:\n\nCPU0 CPU1\n\n | svc_i3c_master_hj_work\nsvc_i3c_master_remove |\ni3c_master_unregister(&master->base)|\ndevice_unregister(&master->dev) |\ndevice_release |\n//free master->base |\n | i3c_master_do_daa(&master->base)\n | //use master->base\n\nFix it by ensuring that the work is canceled before proceeding with the\ncleanup in svc_i3c_master_remove."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.55", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.10.14", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.11.3", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12", "versionStartIncluding": "6.4"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T09:40:05.346Z"}}}, "cveMetadata": {"cveId": "CVE-2024-49874", "state": "PUBLISHED", "dateUpdated": "2025-05-04T09:40:05.346Z", "dateReserved": "2024-10-21T12:17:06.020Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-10-21T18:01:14.762Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

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And svc_i3c_master_ibi_work can start the\nhj_work, svc_i3c_master_irq_handler can start the ibi_work.\n\nIf we remove the module which will call svc_i3c_master_remove to\nmake cleanup, it will free master->base through i3c_master_unregister\nwhile the work mentioned above will be used. The sequence of operations\nthat may lead to a UAF bug is as follows:\n\nCPU0 CPU1\n\n | svc_i3c_master_hj_work\nsvc_i3c_master_remove |\ni3c_master_unregister(&master->base)|\ndevice_unregister(&master->dev) |\ndevice_release |\n//free master->base |\n | i3c_master_do_daa(&master->base)\n | //use master->base\n\nFix it by ensuring that the work is canceled before proceeding with the\ncleanup in svc_i3c_master_remove."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: i3c: master: svc: Se corrige la vulnerabilidad de use after free en el controlador svc_i3c_master debido a la condici\u00f3n de ejecuci\u00f3n En la funci\u00f3n svc_i3c_master_probe, &master->hj_work est\u00e1 vinculado con svc_i3c_master_hj_work, &master->ibi_work est\u00e1 vinculado con svc_i3c_master_ibi_work. Y svc_i3c_master_ibi_work puede iniciar hj_work, svc_i3c_master_irq_handler puede iniciar ibi_work. Si eliminamos el m\u00f3dulo que llamar\u00e1 a svc_i3c_master_remove para realizar la limpieza, liberar\u00e1 master->base a trav\u00e9s de i3c_master_unregister mientras que el trabajo mencionado anteriormente se utilizar\u00e1. La secuencia de operaciones que pueden provocar un error de UAF es la siguiente: CPU0 CPU1 | Solucione el problema asegur\u00e1ndose de que el trabajo se cancele antes de continuar con la limpieza en svc_i3c_master_remove."}], "id": "CVE-2024-49874", "lastModified": "2026-08-04T11:20:54.360", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-49874", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-10-22T13:46:33.404172Z", "version": "2.0.3"}}]}, "published": "2024-10-21T18:15:08.983", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/27b55724d3f781dd6e635e89dc6e2fd78fa81a00"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4318998892bf8fe99f97bea18c37ae7b685af75a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4ac637122930cc4ab7e2c22e364cf3aaf96b05b1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/56bddf543d4d7ddeff3f87b554ddacfdf086bffe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/61850725779709369c7e907ae8c7c75dc7cec4f3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: i3c: master: svc: Fix use after free vulnerability in svc_i3c_master Driver Due to Race Condition", "id": "2320516", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320516"}, "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"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ni3c: master: svc: Fix use after free vulnerability in svc_i3c_master Driver Due to Race Condition\nIn the svc_i3c_master_probe function, &master->hj_work is bound with\nsvc_i3c_master_hj_work, &master->ibi_work is bound with\nsvc_i3c_master_ibi_work. And svc_i3c_master_ibi_work can start the\nhj_work, svc_i3c_master_irq_handler can start the ibi_work.\nIf we remove the module which will call svc_i3c_master_remove to\nmake cleanup, it will free master->base through i3c_master_unregister\nwhile the work mentioned above will be used. The sequence of operations\nthat may lead to a UAF bug is as follows:\nCPU0 CPU1\n| svc_i3c_master_hj_work\nsvc_i3c_master_remove |\ni3c_master_unregister(&master->base)|\ndevice_unregister(&master->dev) |\ndevice_release |\n//free master->base |\n| i3c_master_do_daa(&master->base)\n| //use master->base\nFix it by ensuring that the work is canceled before proceeding with the\ncleanup in svc_i3c_master_remove."], "name": "CVE-2024-49874", "package_state": [{"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": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-49874\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-49874\nhttps://lore.kernel.org/linux-cve-announce/2024102115-CVE-2024-49874-6deb@gregkh/T"], "threat_severity": "Moderate"}

{}