{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-35979", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T13:50:33.144Z", "datePublished": "2024-05-20T09:42:04.424Z", "dateUpdated": "2026-05-11T20:14:54.299Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:14:54.299Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nraid1: fix use-after-free for original bio in raid1_write_request()\n\nr1_bio->bios[] is used to record new bios that will be issued to\nunderlying disks, however, in raid1_write_request(), r1_bio->bios[]\nwill set to the original bio temporarily. Meanwhile, if blocked rdev\nis set, free_r1bio() will be called causing that all r1_bio->bios[]\nto be freed:\n\nraid1_write_request()\n r1_bio = alloc_r1bio(mddev, bio); -> r1_bio->bios[] is NULL\n for (i = 0; i < disks; i++) -> for each rdev in conf\n // first rdev is normal\n r1_bio->bios[0] = bio; -> set to original bio\n // second rdev is blocked\n if (test_bit(Blocked, &rdev->flags))\n break\n\n if (blocked_rdev)\n free_r1bio()\n put_all_bios()\n bio_put(r1_bio->bios[0]) -> original bio is freed\n\nTest scripts:\n\nmdadm -CR /dev/md0 -l1 -n4 /dev/sd[abcd] --assume-clean\nfio -filename=/dev/md0 -ioengine=libaio -rw=write -bs=4k -numjobs=1 \\\n -iodepth=128 -name=test -direct=1\necho blocked > /sys/block/md0/md/rd2/state\n\nTest result:\n\nBUG bio-264 (Not tainted): Object already free\n-----------------------------------------------------------------------------\n\nAllocated in mempool_alloc_slab+0x24/0x50 age=1 cpu=1 pid=869\n kmem_cache_alloc+0x324/0x480\n mempool_alloc_slab+0x24/0x50\n mempool_alloc+0x6e/0x220\n bio_alloc_bioset+0x1af/0x4d0\n blkdev_direct_IO+0x164/0x8a0\n blkdev_write_iter+0x309/0x440\n aio_write+0x139/0x2f0\n io_submit_one+0x5ca/0xb70\n __do_sys_io_submit+0x86/0x270\n __x64_sys_io_submit+0x22/0x30\n do_syscall_64+0xb1/0x210\n entry_SYSCALL_64_after_hwframe+0x6c/0x74\nFreed in mempool_free_slab+0x1f/0x30 age=1 cpu=1 pid=869\n kmem_cache_free+0x28c/0x550\n mempool_free_slab+0x1f/0x30\n mempool_free+0x40/0x100\n bio_free+0x59/0x80\n bio_put+0xf0/0x220\n free_r1bio+0x74/0xb0\n raid1_make_request+0xadf/0x1150\n md_handle_request+0xc7/0x3b0\n md_submit_bio+0x76/0x130\n __submit_bio+0xd8/0x1d0\n submit_bio_noacct_nocheck+0x1eb/0x5c0\n submit_bio_noacct+0x169/0xd40\n submit_bio+0xee/0x1d0\n blkdev_direct_IO+0x322/0x8a0\n blkdev_write_iter+0x309/0x440\n aio_write+0x139/0x2f0\n\nSince that bios for underlying disks are not allocated yet, fix this\nproblem by using mempool_free() directly to free the r1_bio."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/md/raid1.c"], "versions": [{"version": "992db13a4aee766c8bfbf046ad15c2db5fa7cab8", "lessThan": "3f28d49a328fe20926995d5fbdc92da665596268", "status": "affected", "versionType": "git"}, {"version": "992db13a4aee766c8bfbf046ad15c2db5fa7cab8", "lessThan": "f423f41b7679c09abb26d2bd54be5cbef23c9446", "status": "affected", "versionType": "git"}, {"version": "992db13a4aee766c8bfbf046ad15c2db5fa7cab8", "lessThan": "fcf3f7e2fc8a53a6140beee46ec782a4c88e4744", "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/md/raid1.c"], "versions": [{"version": "6.6", "status": "affected"}, {"version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.28", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8.7", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.9", "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": "6.6", "versionEndExcluding": "6.6.28"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.8.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.9"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3f28d49a328fe20926995d5fbdc92da665596268"}, {"url": "https://git.kernel.org/stable/c/f423f41b7679c09abb26d2bd54be5cbef23c9446"}, {"url": "https://git.kernel.org/stable/c/fcf3f7e2fc8a53a6140beee46ec782a4c88e4744"}], "title": "raid1: fix use-after-free for original bio in raid1_write_request()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-06-17T17:38:14.409469Z", "id": "CVE-2024-35979", "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": "2024-06-17T17:40:22.888Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:21:49.042Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/3f28d49a328fe20926995d5fbdc92da665596268", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f423f41b7679c09abb26d2bd54be5cbef23c9446", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/fcf3f7e2fc8a53a6140beee46ec782a4c88e4744", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/3f28d49a328fe20926995d5fbdc92da665596268", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f423f41b7679c09abb26d2bd54be5cbef23c9446", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/fcf3f7e2fc8a53a6140beee46ec782a4c88e4744", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:21:49.042Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-35979", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-06-17T17:38:14.409469Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-17T17:38:15.563Z"}}], "cna": {"title": "raid1: fix use-after-free for original bio in raid1_write_request()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "992db13a4aee766c8bfbf046ad15c2db5fa7cab8", "lessThan": "3f28d49a328fe20926995d5fbdc92da665596268", "versionType": "git"}, {"status": "affected", "version": "992db13a4aee766c8bfbf046ad15c2db5fa7cab8", "lessThan": "f423f41b7679c09abb26d2bd54be5cbef23c9446", "versionType": "git"}, {"status": "affected", "version": "992db13a4aee766c8bfbf046ad15c2db5fa7cab8", "lessThan": "fcf3f7e2fc8a53a6140beee46ec782a4c88e4744", "versionType": "git"}], "programFiles": ["drivers/md/raid1.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.6"}, {"status": "unaffected", "version": "0", "lessThan": "6.6", "versionType": "semver"}, {"status": "unaffected", "version": "6.6.28", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.8.7", "versionType": "semver", "lessThanOrEqual": "6.8.*"}, {"status": "unaffected", "version": "6.9", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/md/raid1.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/3f28d49a328fe20926995d5fbdc92da665596268"}, {"url": "https://git.kernel.org/stable/c/f423f41b7679c09abb26d2bd54be5cbef23c9446"}, {"url": "https://git.kernel.org/stable/c/fcf3f7e2fc8a53a6140beee46ec782a4c88e4744"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nraid1: fix use-after-free for original bio in raid1_write_request()\n\nr1_bio->bios[] is used to record new bios that will be issued to\nunderlying disks, however, in raid1_write_request(), r1_bio->bios[]\nwill set to the original bio temporarily. Meanwhile, if blocked rdev\nis set, free_r1bio() will be called causing that all r1_bio->bios[]\nto be freed:\n\nraid1_write_request()\n r1_bio = alloc_r1bio(mddev, bio); -> r1_bio->bios[] is NULL\n for (i = 0; i < disks; i++) -> for each rdev in conf\n // first rdev is normal\n r1_bio->bios[0] = bio; -> set to original bio\n // second rdev is blocked\n if (test_bit(Blocked, &rdev->flags))\n break\n\n if (blocked_rdev)\n free_r1bio()\n put_all_bios()\n bio_put(r1_bio->bios[0]) -> original bio is freed\n\nTest scripts:\n\nmdadm -CR /dev/md0 -l1 -n4 /dev/sd[abcd] --assume-clean\nfio -filename=/dev/md0 -ioengine=libaio -rw=write -bs=4k -numjobs=1 \\\n -iodepth=128 -name=test -direct=1\necho blocked > /sys/block/md0/md/rd2/state\n\nTest result:\n\nBUG bio-264 (Not tainted): Object already free\n-----------------------------------------------------------------------------\n\nAllocated in mempool_alloc_slab+0x24/0x50 age=1 cpu=1 pid=869\n kmem_cache_alloc+0x324/0x480\n mempool_alloc_slab+0x24/0x50\n mempool_alloc+0x6e/0x220\n bio_alloc_bioset+0x1af/0x4d0\n blkdev_direct_IO+0x164/0x8a0\n blkdev_write_iter+0x309/0x440\n aio_write+0x139/0x2f0\n io_submit_one+0x5ca/0xb70\n __do_sys_io_submit+0x86/0x270\n __x64_sys_io_submit+0x22/0x30\n do_syscall_64+0xb1/0x210\n entry_SYSCALL_64_after_hwframe+0x6c/0x74\nFreed in mempool_free_slab+0x1f/0x30 age=1 cpu=1 pid=869\n kmem_cache_free+0x28c/0x550\n mempool_free_slab+0x1f/0x30\n mempool_free+0x40/0x100\n bio_free+0x59/0x80\n bio_put+0xf0/0x220\n free_r1bio+0x74/0xb0\n raid1_make_request+0xadf/0x1150\n md_handle_request+0xc7/0x3b0\n md_submit_bio+0x76/0x130\n __submit_bio+0xd8/0x1d0\n submit_bio_noacct_nocheck+0x1eb/0x5c0\n submit_bio_noacct+0x169/0xd40\n submit_bio+0xee/0x1d0\n blkdev_direct_IO+0x322/0x8a0\n blkdev_write_iter+0x309/0x440\n aio_write+0x139/0x2f0\n\nSince that bios for underlying disks are not allocated yet, fix this\nproblem by using mempool_free() directly to free the r1_bio."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.28", "versionStartIncluding": "6.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8.7", "versionStartIncluding": "6.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.9", "versionStartIncluding": "6.6"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T09:09:45.251Z"}}}, "cveMetadata": {"cveId": "CVE-2024-35979", "state": "PUBLISHED", "dateUpdated": "2025-05-04T09:09:45.251Z", "dateReserved": "2024-05-17T13:50:33.144Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-20T09:42:04.424Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "54CE4EE1-C720-47E5-B190-A9E343A08775", "versionEndExcluding": "6.6.28", "versionStartIncluding": "6.6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "531BDFB5-EF6A-4707-902E-146368303499", "versionEndExcluding": "6.8.7", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*", "matchCriteriaId": "22BEDD49-2C6D-402D-9DBF-6646F6ECD10B", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*", "matchCriteriaId": "DF73CB2A-DFFD-46FB-9BFE-AA394F27EA37", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*", "matchCriteriaId": "52048DDA-FC5A-4363-95A0-A6357B4D7F8C", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nraid1: fix use-after-free for original bio in raid1_write_request()\n\nr1_bio->bios[] is used to record new bios that will be issued to\nunderlying disks, however, in raid1_write_request(), r1_bio->bios[]\nwill set to the original bio temporarily. Meanwhile, if blocked rdev\nis set, free_r1bio() will be called causing that all r1_bio->bios[]\nto be freed:\n\nraid1_write_request()\n r1_bio = alloc_r1bio(mddev, bio); -> r1_bio->bios[] is NULL\n for (i = 0; i < disks; i++) -> for each rdev in conf\n // first rdev is normal\n r1_bio->bios[0] = bio; -> set to original bio\n // second rdev is blocked\n if (test_bit(Blocked, &rdev->flags))\n break\n\n if (blocked_rdev)\n free_r1bio()\n put_all_bios()\n bio_put(r1_bio->bios[0]) -> original bio is freed\n\nTest scripts:\n\nmdadm -CR /dev/md0 -l1 -n4 /dev/sd[abcd] --assume-clean\nfio -filename=/dev/md0 -ioengine=libaio -rw=write -bs=4k -numjobs=1 \\\n -iodepth=128 -name=test -direct=1\necho blocked > /sys/block/md0/md/rd2/state\n\nTest result:\n\nBUG bio-264 (Not tainted): Object already free\n-----------------------------------------------------------------------------\n\nAllocated in mempool_alloc_slab+0x24/0x50 age=1 cpu=1 pid=869\n kmem_cache_alloc+0x324/0x480\n mempool_alloc_slab+0x24/0x50\n mempool_alloc+0x6e/0x220\n bio_alloc_bioset+0x1af/0x4d0\n blkdev_direct_IO+0x164/0x8a0\n blkdev_write_iter+0x309/0x440\n aio_write+0x139/0x2f0\n io_submit_one+0x5ca/0xb70\n __do_sys_io_submit+0x86/0x270\n __x64_sys_io_submit+0x22/0x30\n do_syscall_64+0xb1/0x210\n entry_SYSCALL_64_after_hwframe+0x6c/0x74\nFreed in mempool_free_slab+0x1f/0x30 age=1 cpu=1 pid=869\n kmem_cache_free+0x28c/0x550\n mempool_free_slab+0x1f/0x30\n mempool_free+0x40/0x100\n bio_free+0x59/0x80\n bio_put+0xf0/0x220\n free_r1bio+0x74/0xb0\n raid1_make_request+0xadf/0x1150\n md_handle_request+0xc7/0x3b0\n md_submit_bio+0x76/0x130\n __submit_bio+0xd8/0x1d0\n submit_bio_noacct_nocheck+0x1eb/0x5c0\n submit_bio_noacct+0x169/0xd40\n submit_bio+0xee/0x1d0\n blkdev_direct_IO+0x322/0x8a0\n blkdev_write_iter+0x309/0x440\n aio_write+0x139/0x2f0\n\nSince that bios for underlying disks are not allocated yet, fix this\nproblem by using mempool_free() directly to free the r1_bio."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: raid1: corrige el uso despu\u00e9s de liberar la biograf\u00eda original en raid1_write_request() r1_bio-&gt;bios[] se usa para registrar nuevas biograf\u00edas que se emitir\u00e1n a los discos subyacentes; sin embargo, en raid1_write_request(), r1_bio-&gt;bios[] se configurar\u00e1 temporalmente en la biograf\u00eda original. Mientras tanto, si se establece rdev bloqueado, se llamar\u00e1 a free_r1bio() causando que todos los r1_bio-&gt;bios[] sean liberados: raid1_write_request() r1_bio = alloc_r1bio(mddev, bio); -&gt; r1_bio-&gt;bios[] es NULL para (i = 0; i &lt; discos; i++) -&gt; para cada rdev en conf // el primer rdev es normal r1_bio-&gt;bios[0] = bio; -&gt; establecer en biograf\u00eda original // el segundo rdev est\u00e1 bloqueado si (test_bit(Blocked, &amp;rdev-&gt;flags)) break if (blocked_rdev) free_r1bio() put_all_bios() bio_put(r1_bio-&gt;bios[0]) -&gt; biograf\u00eda original es Scripts de prueba liberados: mdadm -CR /dev/md0 -l1 -n4 /dev/sd[abcd] --assume-clean fio -filename=/dev/md0 -ioengine=libaio -rw=write -bs=4k -numjobs= 1 \\ -io Depth=128 -name=test -direct=1 eco bloqueado &gt; /sys/block/md0/md/rd2/state Resultado de la prueba: ERROR bio-264 (No contaminado): Objeto ya libre ------ -------------------------------------------------- --------------------- Asignado en mempool_alloc_slab+0x24/0x50 age=1 cpu=1 pid=869 kmem_cache_alloc+0x324/0x480 mempool_alloc_slab+0x24/0x50 mempool_alloc+0x6e /0x220 bio_alloc_bioset+0x1af/0x4d0 blkdev_direct_IO+0x164/0x8a0 blkdev_write_iter+0x309/0x440 aio_write+0x139/0x2f0 io_submit_one+0x5ca/0xb70 __do_sys_io_submit+0x86/0x270 __x64_sys_io_submit+0x22/0x30 do_syscall_64+0xb1/0x210 Entry_SYSCALL_64_after_hwframe+0x6c/0x74 Liberado en mempool_free_slab +0x1f/0x30 edad=1 cpu=1 pid=869 kmem_cache_free+0x28c/0x550 mempool_free_slab+0x1f/0x30 mempool_free+0x40/0x100 bio_free+0x59/0x80 bio_put+0xf0/0x220 free_r1bio+0x74/0xb0 raid1_make_ request+0xadf/0x1150 md_handle_request+ 0xc7/0x3b0 md_submit_bio+0x76/0x130 __submit_bio+0xd8/0x1d0 submit_bio_noacct_nocheck+0x1eb/0x5c0 submit_bio_noacct+0x169/0xd40 submit_bio+0xee/0x1d0 blkdev_direct_IO+0x322/0x8a0 _write_iter+0x309/0x440 aio_write+0x139/0x2f0 Dado que las BIOS para los discos subyacentes son a\u00fan no asignado, solucione este problema usando mempool_free() directamente para liberar r1_bio."}], "id": "CVE-2024-35979", "lastModified": "2025-01-14T17:28:20.793", "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": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-05-20T10:15:12.480", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3f28d49a328fe20926995d5fbdc92da665596268"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f423f41b7679c09abb26d2bd54be5cbef23c9446"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fcf3f7e2fc8a53a6140beee46ec782a4c88e4744"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3f28d49a328fe20926995d5fbdc92da665596268"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f423f41b7679c09abb26d2bd54be5cbef23c9446"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fcf3f7e2fc8a53a6140beee46ec782a4c88e4744"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:9315", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}], "bugzilla": {"description": "kernel: raid1: fix use-after-free for original bio in raid1_write_request()", "id": "2281872", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2281872"}, "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": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nraid1: fix use-after-free for original bio in raid1_write_request()\nr1_bio->bios[] is used to record new bios that will be issued to\nunderlying disks, however, in raid1_write_request(), r1_bio->bios[]\nwill set to the original bio temporarily. Meanwhile, if blocked rdev\nis set, free_r1bio() will be called causing that all r1_bio->bios[]\nto be freed:\nraid1_write_request()\nr1_bio = alloc_r1bio(mddev, bio); -> r1_bio->bios[] is NULL\nfor (i = 0; i < disks; i++) -> for each rdev in conf\n// first rdev is normal\nr1_bio->bios[0] = bio; -> set to original bio\n// second rdev is blocked\nif (test_bit(Blocked, &rdev->flags))\nbreak\nif (blocked_rdev)\nfree_r1bio()\nput_all_bios()\nbio_put(r1_bio->bios[0]) -> original bio is freed\nTest scripts:\nmdadm -CR /dev/md0 -l1 -n4 /dev/sd[abcd] --assume-clean\nfio -filename=/dev/md0 -ioengine=libaio -rw=write -bs=4k -numjobs=1 \\\n-iodepth=128 -name=test -direct=1\necho blocked > /sys/block/md0/md/rd2/state\nTest result:\nBUG bio-264 (Not tainted): Object already free\n-----------------------------------------------------------------------------\nAllocated in mempool_alloc_slab+0x24/0x50 age=1 cpu=1 pid=869\nkmem_cache_alloc+0x324/0x480\nmempool_alloc_slab+0x24/0x50\nmempool_alloc+0x6e/0x220\nbio_alloc_bioset+0x1af/0x4d0\nblkdev_direct_IO+0x164/0x8a0\nblkdev_write_iter+0x309/0x440\naio_write+0x139/0x2f0\nio_submit_one+0x5ca/0xb70\n__do_sys_io_submit+0x86/0x270\n__x64_sys_io_submit+0x22/0x30\ndo_syscall_64+0xb1/0x210\nentry_SYSCALL_64_after_hwframe+0x6c/0x74\nFreed in mempool_free_slab+0x1f/0x30 age=1 cpu=1 pid=869\nkmem_cache_free+0x28c/0x550\nmempool_free_slab+0x1f/0x30\nmempool_free+0x40/0x100\nbio_free+0x59/0x80\nbio_put+0xf0/0x220\nfree_r1bio+0x74/0xb0\nraid1_make_request+0xadf/0x1150\nmd_handle_request+0xc7/0x3b0\nmd_submit_bio+0x76/0x130\n__submit_bio+0xd8/0x1d0\nsubmit_bio_noacct_nocheck+0x1eb/0x5c0\nsubmit_bio_noacct+0x169/0xd40\nsubmit_bio+0xee/0x1d0\nblkdev_direct_IO+0x322/0x8a0\nblkdev_write_iter+0x309/0x440\naio_write+0x139/0x2f0\nSince that bios for underlying disks are not allocated yet, fix this\nproblem by using mempool_free() directly to free the r1_bio."], "name": "CVE-2024-35979", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Under investigation", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-35979\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-35979\nhttps://lore.kernel.org/linux-cve-announce/2024052025-CVE-2024-35979-2618@gregkh/T"], "threat_severity": "Low"}

{}