{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47412", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T14:58:30.817Z", "datePublished": "2024-05-21T15:04:03.309Z", "dateUpdated": "2024-08-04T05:39:59.401Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:07:29.576Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: don't call rq_qos_ops->done_bio if the bio isn't tracked\n\nrq_qos framework is only applied on request based driver, so:\n\n1) rq_qos_done_bio() needn't to be called for bio based driver\n\n2) rq_qos_done_bio() needn't to be called for bio which isn't tracked,\nsuch as bios ended from error handling code.\n\nEspecially in bio_endio():\n\n1) request queue is referred via bio->bi_bdev->bd_disk->queue, which\nmay be gone since request queue refcount may not be held in above two\ncases\n\n2) q->rq_qos may be freed in blk_cleanup_queue() when calling into\n__rq_qos_done_bio()\n\nFix the potential kernel panic by not calling rq_qos_ops->done_bio if\nthe bio isn't tracked. This way is safe because both ioc_rqos_done_bio()\nand blkcg_iolatency_done_bio() are nop if the bio isn't tracked."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["block/bio.c"], "versions": [{"version": "1da177e4c3f4", "lessThan": "004b8f8a6912", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "a647a524a467", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["block/bio.c"], "versions": [{"version": "5.14.11", "lessThanOrEqual": "5.14.*", "status": "unaffected", "versionType": "custom"}, {"version": "5.15", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/004b8f8a691205a93d9e80d98b786b2b97424d6e"}, {"url": "https://git.kernel.org/stable/c/a647a524a46736786c95cdb553a070322ca096e3"}], "title": "block: don't call rq_qos_ops->done_bio if the bio isn't tracked", "x_generator": {"engine": "bippy-a5840b7849dd"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-06-11T17:28:47.066559Z", "id": "CVE-2021-47412", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-11T17:29:00.823Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.401Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/004b8f8a691205a93d9e80d98b786b2b97424d6e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a647a524a46736786c95cdb553a070322ca096e3", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/004b8f8a691205a93d9e80d98b786b2b97424d6e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a647a524a46736786c95cdb553a070322ca096e3", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.401Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47412", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-06-11T17:28:47.066559Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-11T17:28:53.752Z"}}], "cna": {"title": "block: don't call rq_qos_ops->done_bio if the bio isn't tracked", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1da177e4c3f4", "lessThan": "004b8f8a6912", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f4", "lessThan": "a647a524a467", "versionType": "git"}], "programFiles": ["block/bio.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "unaffected", "version": "5.14.11", "versionType": "custom", "lessThanOrEqual": "5.14.*"}, {"status": "unaffected", "version": "5.15", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["block/bio.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/004b8f8a691205a93d9e80d98b786b2b97424d6e"}, {"url": "https://git.kernel.org/stable/c/a647a524a46736786c95cdb553a070322ca096e3"}], "x_generator": {"engine": "bippy-a5840b7849dd"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: don't call rq_qos_ops->done_bio if the bio isn't tracked\n\nrq_qos framework is only applied on request based driver, so:\n\n1) rq_qos_done_bio() needn't to be called for bio based driver\n\n2) rq_qos_done_bio() needn't to be called for bio which isn't tracked,\nsuch as bios ended from error handling code.\n\nEspecially in bio_endio():\n\n1) request queue is referred via bio->bi_bdev->bd_disk->queue, which\nmay be gone since request queue refcount may not be held in above two\ncases\n\n2) q->rq_qos may be freed in blk_cleanup_queue() when calling into\n__rq_qos_done_bio()\n\nFix the potential kernel panic by not calling rq_qos_ops->done_bio if\nthe bio isn't tracked. This way is safe because both ioc_rqos_done_bio()\nand blkcg_iolatency_done_bio() are nop if the bio isn't tracked."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:07:29.576Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47412", "state": "PUBLISHED", "dateUpdated": "2024-08-04T05:39:59.401Z", "dateReserved": "2024-05-21T14:58:30.817Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T15:04:03.309Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: don't call rq_qos_ops->done_bio if the bio isn't tracked\n\nrq_qos framework is only applied on request based driver, so:\n\n1) rq_qos_done_bio() needn't to be called for bio based driver\n\n2) rq_qos_done_bio() needn't to be called for bio which isn't tracked,\nsuch as bios ended from error handling code.\n\nEspecially in bio_endio():\n\n1) request queue is referred via bio->bi_bdev->bd_disk->queue, which\nmay be gone since request queue refcount may not be held in above two\ncases\n\n2) q->rq_qos may be freed in blk_cleanup_queue() when calling into\n__rq_qos_done_bio()\n\nFix the potential kernel panic by not calling rq_qos_ops->done_bio if\nthe bio isn't tracked. This way is safe because both ioc_rqos_done_bio()\nand blkcg_iolatency_done_bio() are nop if the bio isn't tracked."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bloque: no llame a rq_qos_ops->done_bio si no se realiza un seguimiento de la biograf\u00eda. El framework rq_qos solo se aplica en el controlador basado en solicitudes, por lo que: 1) rq_qos_done_bio() no necesita hacerlo ser llamado para un controlador basado en biograf\u00eda 2) No es necesario llamar a rq_qos_done_bio() para una biograf\u00eda que no est\u00e1 rastreada, como una biograf\u00eda terminada por un c\u00f3digo de manejo de errores. Especialmente en bio_endio(): 1) la cola de solicitudes se remite a trav\u00e9s de bio->bi_bdev->bd_disk->queue, que puede desaparecer ya que el recuento de la cola de solicitudes no se puede mantener en los dos casos anteriores 2) q->rq_qos se puede liberar en blk_cleanup_queue() al llamar a __rq_qos_done_bio() Solucione el posible p\u00e1nico del kernel al no llamar a rq_qos_ops->done_bio si no se realiza un seguimiento de la biograf\u00eda. Esta forma es segura porque tanto ioc_rqos_done_bio() como blkcg_iolatency_done_bio() no funcionan si no se realiza un seguimiento de la biograf\u00eda."}], "id": "CVE-2021-47412", "lastModified": "2024-05-21T16:53:56.550", "metrics": {}, "published": "2024-05-21T15:15:26.700", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/004b8f8a691205a93d9e80d98b786b2b97424d6e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a647a524a46736786c95cdb553a070322ca096e3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"affected_release": [{"advisory": "RHSA-2024:7001", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.22.1.rt7.363.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-09-24T00:00:00Z"}, {"advisory": "RHSA-2024:7000", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.22.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-09-24T00:00:00Z"}], "bugzilla": {"description": "kernel: block: don't call rq_qos_ops->done_bio if the bio isn't tracked", "id": "2282324", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282324"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-388", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nblock: don't call rq_qos_ops->done_bio if the bio isn't tracked\nrq_qos framework is only applied on request based driver, so:\n1) rq_qos_done_bio() needn't to be called for bio based driver\n2) rq_qos_done_bio() needn't to be called for bio which isn't tracked,\nsuch as bios ended from error handling code.\nEspecially in bio_endio():\n1) request queue is referred via bio->bi_bdev->bd_disk->queue, which\nmay be gone since request queue refcount may not be held in above two\ncases\n2) q->rq_qos may be freed in blk_cleanup_queue() when calling into\n__rq_qos_done_bio()\nFix the potential kernel panic by not calling rq_qos_ops->done_bio if\nthe bio isn't tracked. This way is safe because both ioc_rqos_done_bio()\nand blkcg_iolatency_done_bio() are nop if the bio isn't tracked.", "A vulnerability was found in the Linux kernel, where improper handling of block I/O requests when a block I/O request (bio) is not tracked, the kernel erroneously calls the rq_qos_ops->done_bio function, potentially leading to use-after-free issues. This situation can occurr when the request queue is accessed after it has been freed, resulting in possible kernel panic."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2021-47412", "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: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": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47412\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47412\nhttps://lore.kernel.org/linux-cve-announce/2024052152-CVE-2021-47412-b362@gregkh/T"], "statement": "This vulnerability is classified as moderate severity, as the issue can cause kernel panics, leading to system crashes. However, it does not affect data confidentiality or integrity.", "threat_severity": "Moderate", "upstream_fix": "kernel 5.14.11, kernel 5.15"}