{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-36478", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-06-21T10:13:16.284Z", "datePublished": "2024-06-21T10:18:09.027Z", "dateUpdated": "2024-09-11T17:34:45.770Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-07-15T06:47:02.695Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnull_blk: fix null-ptr-dereference while configuring 'power' and 'submit_queues'\n\nWriting 'power' and 'submit_queues' concurrently will trigger kernel\npanic:\n\nTest script:\n\nmodprobe null_blk nr_devices=0\nmkdir -p /sys/kernel/config/nullb/nullb0\nwhile true; do echo 1 > submit_queues; echo 4 > submit_queues; done &\nwhile true; do echo 1 > power; echo 0 > power; done\n\nTest result:\n\nBUG: kernel NULL pointer dereference, address: 0000000000000148\nOops: 0000 [#1] PREEMPT SMP\nRIP: 0010:__lock_acquire+0x41d/0x28f0\nCall Trace:\n <TASK>\n lock_acquire+0x121/0x450\n down_write+0x5f/0x1d0\n simple_recursive_removal+0x12f/0x5c0\n blk_mq_debugfs_unregister_hctxs+0x7c/0x100\n blk_mq_update_nr_hw_queues+0x4a3/0x720\n nullb_update_nr_hw_queues+0x71/0xf0 [null_blk]\n nullb_device_submit_queues_store+0x79/0xf0 [null_blk]\n configfs_write_iter+0x119/0x1e0\n vfs_write+0x326/0x730\n ksys_write+0x74/0x150\n\nThis is because del_gendisk() can concurrent with\nblk_mq_update_nr_hw_queues():\n\nnullb_device_power_store\tnullb_apply_submit_queues\n null_del_dev\n del_gendisk\n\t\t\t\t nullb_update_nr_hw_queues\n\t\t\t\t if (!dev->nullb)\n\t\t\t\t // still set while gendisk is deleted\n\t\t\t\t return 0\n\t\t\t\t blk_mq_update_nr_hw_queues\n dev->nullb = NULL\n\nFix this problem by resuing the global mutex to protect\nnullb_device_power_store() and nullb_update_nr_hw_queues() from configfs."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/block/null_blk/main.c"], "versions": [{"version": "45919fbfe1c4", "lessThan": "5d0495473ee4", "status": "affected", "versionType": "git"}, {"version": "45919fbfe1c4", "lessThan": "a2db328b0839", "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/block/null_blk/main.c"], "versions": [{"version": "5.5", "status": "affected"}, {"version": "0", "lessThan": "5.5", "status": "unaffected", "versionType": "custom"}, {"version": "6.9.4", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/5d0495473ee4c1d041b5a917f10446a22c047f47"}, {"url": "https://git.kernel.org/stable/c/a2db328b0839312c169eb42746ec46fc1ab53ed2"}], "title": "null_blk: fix null-ptr-dereference while configuring 'power' and 'submit_queues'", "x_generator": {"engine": "bippy-c9c4e1df01b2"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:37:05.181Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/5d0495473ee4c1d041b5a917f10446a22c047f47", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a2db328b0839312c169eb42746ec46fc1ab53ed2", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-36478", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T17:09:31.490057Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:34:45.770Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/5d0495473ee4c1d041b5a917f10446a22c047f47", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a2db328b0839312c169eb42746ec46fc1ab53ed2", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:37:05.181Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-36478", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T17:09:31.490057Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:25.705Z"}}], "cna": {"title": "null_blk: fix null-ptr-dereference while configuring 'power' and 'submit_queues'", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "45919fbfe1c4", "lessThan": "5d0495473ee4", "versionType": "git"}, {"status": "affected", "version": "45919fbfe1c4", "lessThan": "a2db328b0839", "versionType": "git"}], "programFiles": ["drivers/block/null_blk/main.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.5"}, {"status": "unaffected", "version": "0", "lessThan": "5.5", "versionType": "custom"}, {"status": "unaffected", "version": "6.9.4", "versionType": "custom", "lessThanOrEqual": "6.9.*"}, {"status": "unaffected", "version": "6.10", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/block/null_blk/main.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/5d0495473ee4c1d041b5a917f10446a22c047f47"}, {"url": "https://git.kernel.org/stable/c/a2db328b0839312c169eb42746ec46fc1ab53ed2"}], "x_generator": {"engine": "bippy-c9c4e1df01b2"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnull_blk: fix null-ptr-dereference while configuring 'power' and 'submit_queues'\n\nWriting 'power' and 'submit_queues' concurrently will trigger kernel\npanic:\n\nTest script:\n\nmodprobe null_blk nr_devices=0\nmkdir -p /sys/kernel/config/nullb/nullb0\nwhile true; do echo 1 > submit_queues; echo 4 > submit_queues; done &\nwhile true; do echo 1 > power; echo 0 > power; done\n\nTest result:\n\nBUG: kernel NULL pointer dereference, address: 0000000000000148\nOops: 0000 [#1] PREEMPT SMP\nRIP: 0010:__lock_acquire+0x41d/0x28f0\nCall Trace:\n <TASK>\n lock_acquire+0x121/0x450\n down_write+0x5f/0x1d0\n simple_recursive_removal+0x12f/0x5c0\n blk_mq_debugfs_unregister_hctxs+0x7c/0x100\n blk_mq_update_nr_hw_queues+0x4a3/0x720\n nullb_update_nr_hw_queues+0x71/0xf0 [null_blk]\n nullb_device_submit_queues_store+0x79/0xf0 [null_blk]\n configfs_write_iter+0x119/0x1e0\n vfs_write+0x326/0x730\n ksys_write+0x74/0x150\n\nThis is because del_gendisk() can concurrent with\nblk_mq_update_nr_hw_queues():\n\nnullb_device_power_store\tnullb_apply_submit_queues\n null_del_dev\n del_gendisk\n\t\t\t\t nullb_update_nr_hw_queues\n\t\t\t\t if (!dev->nullb)\n\t\t\t\t // still set while gendisk is deleted\n\t\t\t\t return 0\n\t\t\t\t blk_mq_update_nr_hw_queues\n dev->nullb = NULL\n\nFix this problem by resuing the global mutex to protect\nnullb_device_power_store() and nullb_update_nr_hw_queues() from configfs."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-07-15T06:47:02.695Z"}}}, "cveMetadata": {"cveId": "CVE-2024-36478", "state": "PUBLISHED", "dateUpdated": "2024-09-11T17:34:45.770Z", "dateReserved": "2024-06-21T10:13:16.284Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-06-21T10:18:09.027Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BA9EDDA6-4A33-4936-9152-D0D896107EF8", "versionEndExcluding": "6.9.4", "versionStartIncluding": "5.5", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnull_blk: fix null-ptr-dereference while configuring 'power' and 'submit_queues'\n\nWriting 'power' and 'submit_queues' concurrently will trigger kernel\npanic:\n\nTest script:\n\nmodprobe null_blk nr_devices=0\nmkdir -p /sys/kernel/config/nullb/nullb0\nwhile true; do echo 1 > submit_queues; echo 4 > submit_queues; done &\nwhile true; do echo 1 > power; echo 0 > power; done\n\nTest result:\n\nBUG: kernel NULL pointer dereference, address: 0000000000000148\nOops: 0000 [#1] PREEMPT SMP\nRIP: 0010:__lock_acquire+0x41d/0x28f0\nCall Trace:\n <TASK>\n lock_acquire+0x121/0x450\n down_write+0x5f/0x1d0\n simple_recursive_removal+0x12f/0x5c0\n blk_mq_debugfs_unregister_hctxs+0x7c/0x100\n blk_mq_update_nr_hw_queues+0x4a3/0x720\n nullb_update_nr_hw_queues+0x71/0xf0 [null_blk]\n nullb_device_submit_queues_store+0x79/0xf0 [null_blk]\n configfs_write_iter+0x119/0x1e0\n vfs_write+0x326/0x730\n ksys_write+0x74/0x150\n\nThis is because del_gendisk() can concurrent with\nblk_mq_update_nr_hw_queues():\n\nnullb_device_power_store\tnullb_apply_submit_queues\n null_del_dev\n del_gendisk\n\t\t\t\t nullb_update_nr_hw_queues\n\t\t\t\t if (!dev->nullb)\n\t\t\t\t // still set while gendisk is deleted\n\t\t\t\t return 0\n\t\t\t\t blk_mq_update_nr_hw_queues\n dev->nullb = NULL\n\nFix this problem by resuing the global mutex to protect\nnullb_device_power_store() and nullb_update_nr_hw_queues() from configfs."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: null_blk: corrige la dereferencia null-ptr al configurar 'power' y 'submit_queues'. Escribir 'power' y 'submit_queues' simult\u00e1neamente provocar\u00e1 un p\u00e1nico en el kernel: Script de prueba: modprobe null_blk nr_devices= 0 mkdir -p /sys/kernel/config/nullb/nullb0 mientras sea verdadero; hacer eco 1 &gt; enviar_queues; eco 4 &gt; enviar_colas; hecho y mientras sea cierto; hacer eco 1 &gt; potencia; eco 0 &gt; potencia; hecho Resultado de la prueba: ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 0000000000000148 Ups: 0000 [#1] RIP SMP PREEMPLEADO: 0010:__lock_acquire+0x41d/0x28f0 Seguimiento de llamada: lock_acquire+0x121/0x450 down_write+0x5f/0x1d0 simple_recursive _eliminaci\u00f3n+ 0x12f/0x5c0 blk_mq_debugfs_unregister_hctxs+0x7c/0x100 blk_mq_update_nr_hw_queues+0x4a3/0x720 nullb_update_nr_hw_queues+0x71/0xf0 [null_blk] /0xf0 [null_blk] configfs_write_iter+0x119/0x1e0 vfs_write+0x326/0x730 ksys_write+0x74/0x150 Esto se debe a que del_gendisk() puede concurrente con blk_mq_update_nr_hw_queues(): nullb_device_power_store nullb_apply_submit_queues null_del_dev del_gendisk nullb_update_nr_hw_queues if (!dev-&gt;nullb) // todav\u00eda est\u00e1 configurado mientras se elimina gendisk return 0 blk_mq_update_nr_hw_queues dev-&gt;nullb = NULL Fix este problema reutilizando el mutex global para proteger nullb_device_power_store() y nullb_update_nr_hw_queues() de configfs."}], "id": "CVE-2024-36478", "lastModified": "2024-09-09T13:30:12.647", "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": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-06-21T11:15:10.360", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5d0495473ee4c1d041b5a917f10446a22c047f47"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a2db328b0839312c169eb42746ec46fc1ab53ed2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: null_blk: fix null-ptr-dereference while configuring &#39;power&#39; and &#39;submit_queues&#39;", "id": "2293710", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2293710"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnull_blk: fix null-ptr-dereference while configuring 'power' and 'submit_queues'\nWriting 'power' and 'submit_queues' concurrently will trigger kernel\npanic:\nTest script:\nmodprobe null_blk nr_devices=0\nmkdir -p /sys/kernel/config/nullb/nullb0\nwhile true; do echo 1 > submit_queues; echo 4 > submit_queues; done &\nwhile true; do echo 1 > power; echo 0 > power; done\nTest result:\nBUG: kernel NULL pointer dereference, address: 0000000000000148\nOops: 0000 [#1] PREEMPT SMP\nRIP: 0010:__lock_acquire+0x41d/0x28f0\nCall Trace:\n<TASK>\nlock_acquire+0x121/0x450\ndown_write+0x5f/0x1d0\nsimple_recursive_removal+0x12f/0x5c0\nblk_mq_debugfs_unregister_hctxs+0x7c/0x100\nblk_mq_update_nr_hw_queues+0x4a3/0x720\nnullb_update_nr_hw_queues+0x71/0xf0 [null_blk]\nnullb_device_submit_queues_store+0x79/0xf0 [null_blk]\nconfigfs_write_iter+0x119/0x1e0\nvfs_write+0x326/0x730\nksys_write+0x74/0x150\nThis is because del_gendisk() can concurrent with\nblk_mq_update_nr_hw_queues():\nnullb_device_power_storenullb_apply_submit_queues\nnull_del_dev\ndel_gendisk\nnullb_update_nr_hw_queues\nif (!dev->nullb)\n// still set while gendisk is deleted\nreturn 0\nblk_mq_update_nr_hw_queues\ndev->nullb = NULL\nFix this problem by resuing the global mutex to protect\nnullb_device_power_store() and nullb_update_nr_hw_queues() from configfs."], "name": "CVE-2024-36478", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "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": "2024-06-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-36478\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-36478\nhttps://lore.kernel.org/linux-cve-announce/2024062136-CVE-2024-36478-d249@gregkh/T"], "threat_severity": "Low", "upstream_fix": "kernel 6.9.4, kernel 6.10-rc1"}