{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47510", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-24T15:02:54.823Z", "datePublished": "2024-05-24T15:09:26.019Z", "dateUpdated": "2024-11-04T12:07:19.466Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T12:07:19.466Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix re-dirty process of tree-log nodes\n\nThere is a report of a transaction abort of -EAGAIN with the following\nscript.\n\n #!/bin/sh\n\n for d in sda sdb; do\n mkfs.btrfs -d single -m single -f /dev/\\${d}\n done\n\n mount /dev/sda /mnt/test\n mount /dev/sdb /mnt/scratch\n\n for dir in test scratch; do\n echo 3 >/proc/sys/vm/drop_caches\n fio --directory=/mnt/\\${dir} --name=fio.\\${dir} --rw=read --size=50G --bs=64m \\\n --numjobs=$(nproc) --time_based --ramp_time=5 --runtime=480 \\\n --group_reporting |& tee /dev/shm/fio.\\${dir}\n echo 3 >/proc/sys/vm/drop_caches\n done\n\n for d in sda sdb; do\n umount /dev/\\${d}\n done\n\nThe stack trace is shown in below.\n\n [3310.967991] BTRFS: error (device sda) in btrfs_commit_transaction:2341: errno=-11 unknown (Error while writing out transaction)\n [3310.968060] BTRFS info (device sda): forced readonly\n [3310.968064] BTRFS warning (device sda): Skipping commit of aborted transaction.\n [3310.968065] ------------[ cut here ]------------\n [3310.968066] BTRFS: Transaction aborted (error -11)\n [3310.968074] WARNING: CPU: 14 PID: 1684 at fs/btrfs/transaction.c:1946 btrfs_commit_transaction.cold+0x209/0x2c8\n [3310.968131] CPU: 14 PID: 1684 Comm: fio Not tainted 5.14.10-300.fc35.x86_64 #1\n [3310.968135] Hardware name: DIAWAY Tartu/Tartu, BIOS V2.01.B10 04/08/2021\n [3310.968137] RIP: 0010:btrfs_commit_transaction.cold+0x209/0x2c8\n [3310.968144] RSP: 0018:ffffb284ce393e10 EFLAGS: 00010282\n [3310.968147] RAX: 0000000000000026 RBX: ffff973f147b0f60 RCX: 0000000000000027\n [3310.968149] RDX: ffff974ecf098a08 RSI: 0000000000000001 RDI: ffff974ecf098a00\n [3310.968150] RBP: ffff973f147b0f08 R08: 0000000000000000 R09: ffffb284ce393c48\n [3310.968151] R10: ffffb284ce393c40 R11: ffffffff84f47468 R12: ffff973f101bfc00\n [3310.968153] R13: ffff971f20cf2000 R14: 00000000fffffff5 R15: ffff973f147b0e58\n [3310.968154] FS: 00007efe65468740(0000) GS:ffff974ecf080000(0000) knlGS:0000000000000000\n [3310.968157] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n [3310.968158] CR2: 000055691bcbe260 CR3: 000000105cfa4001 CR4: 0000000000770ee0\n [3310.968160] PKRU: 55555554\n [3310.968161] Call Trace:\n [3310.968167] ? dput+0xd4/0x300\n [3310.968174] btrfs_sync_file+0x3f1/0x490\n [3310.968180] __x64_sys_fsync+0x33/0x60\n [3310.968185] do_syscall_64+0x3b/0x90\n [3310.968190] entry_SYSCALL_64_after_hwframe+0x44/0xae\n [3310.968194] RIP: 0033:0x7efe6557329b\n [3310.968200] RSP: 002b:00007ffe0236ebc0 EFLAGS: 00000293 ORIG_RAX: 000000000000004a\n [3310.968203] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efe6557329b\n [3310.968204] RDX: 0000000000000000 RSI: 00007efe58d77010 RDI: 0000000000000006\n [3310.968205] RBP: 0000000004000000 R08: 0000000000000000 R09: 00007efe58d77010\n [3310.968207] R10: 0000000016cacc0c R11: 0000000000000293 R12: 00007efe5ce95980\n [3310.968208] R13: 0000000000000000 R14: 00007efe6447c790 R15: 0000000c80000000\n [3310.968212] ---[ end trace 1a346f4d3c0d96ba ]---\n [3310.968214] BTRFS: error (device sda) in cleanup_transaction:1946: errno=-11 unknown\n\nThe abort occurs because of a write hole while writing out freeing tree\nnodes of a tree-log tree. For zoned btrfs, we re-dirty a freed tree\nnode to ensure btrfs can write the region and does not leave a hole on\nwrite on a zoned device. The current code fails to re-dirty a node\nwhen the tree-log tree's depth is greater or equal to 2. That leads to\na transaction abort with -EAGAIN.\n\nFix the issue by properly re-dirtying a node on walking up the tree."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/tree-log.c"], "versions": [{"version": "d3575156f662", "lessThan": "477675049ca8", "status": "affected", "versionType": "git"}, {"version": "d3575156f662", "lessThan": "84c254489299", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/tree-log.c"], "versions": [{"version": "5.12", "status": "affected"}, {"version": "0", "lessThan": "5.12", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.8", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/477675049ca803aa95ff77468ffbddd966b415b0"}, {"url": "https://git.kernel.org/stable/c/84c25448929942edacba905cecc0474e91114e7a"}], "title": "btrfs: fix re-dirty process of tree-log nodes", "x_generator": {"engine": "bippy-9e1c9544281a"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.687Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/477675049ca803aa95ff77468ffbddd966b415b0", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/84c25448929942edacba905cecc0474e91114e7a", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47510", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:35:36.503255Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:32:52.488Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/477675049ca803aa95ff77468ffbddd966b415b0", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/84c25448929942edacba905cecc0474e91114e7a", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.687Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47510", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:35:36.503255Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:13.185Z"}}], "cna": {"title": "btrfs: fix re-dirty process of tree-log nodes", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "d3575156f662", "lessThan": "477675049ca8", "versionType": "git"}, {"status": "affected", "version": "d3575156f662", "lessThan": "84c254489299", "versionType": "git"}], "programFiles": ["fs/btrfs/tree-log.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.12"}, {"status": "unaffected", "version": "0", "lessThan": "5.12", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.8", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "5.16", "versionType": "semver", "lessThanOrEqual": "*"}], "programFiles": ["fs/btrfs/tree-log.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/477675049ca803aa95ff77468ffbddd966b415b0"}, {"url": "https://git.kernel.org/stable/c/84c25448929942edacba905cecc0474e91114e7a"}], "x_generator": {"engine": "bippy-c8e10e5f6187"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix re-dirty process of tree-log nodes\n\nThere is a report of a transaction abort of -EAGAIN with the following\nscript.\n\n #!/bin/sh\n\n for d in sda sdb; do\n mkfs.btrfs -d single -m single -f /dev/\\${d}\n done\n\n mount /dev/sda /mnt/test\n mount /dev/sdb /mnt/scratch\n\n for dir in test scratch; do\n echo 3 >/proc/sys/vm/drop_caches\n fio --directory=/mnt/\\${dir} --name=fio.\\${dir} --rw=read --size=50G --bs=64m \\\n --numjobs=$(nproc) --time_based --ramp_time=5 --runtime=480 \\\n --group_reporting |& tee /dev/shm/fio.\\${dir}\n echo 3 >/proc/sys/vm/drop_caches\n done\n\n for d in sda sdb; do\n umount /dev/\\${d}\n done\n\nThe stack trace is shown in below.\n\n [3310.967991] BTRFS: error (device sda) in btrfs_commit_transaction:2341: errno=-11 unknown (Error while writing out transaction)\n [3310.968060] BTRFS info (device sda): forced readonly\n [3310.968064] BTRFS warning (device sda): Skipping commit of aborted transaction.\n [3310.968065] ------------[ cut here ]------------\n [3310.968066] BTRFS: Transaction aborted (error -11)\n [3310.968074] WARNING: CPU: 14 PID: 1684 at fs/btrfs/transaction.c:1946 btrfs_commit_transaction.cold+0x209/0x2c8\n [3310.968131] CPU: 14 PID: 1684 Comm: fio Not tainted 5.14.10-300.fc35.x86_64 #1\n [3310.968135] Hardware name: DIAWAY Tartu/Tartu, BIOS V2.01.B10 04/08/2021\n [3310.968137] RIP: 0010:btrfs_commit_transaction.cold+0x209/0x2c8\n [3310.968144] RSP: 0018:ffffb284ce393e10 EFLAGS: 00010282\n [3310.968147] RAX: 0000000000000026 RBX: ffff973f147b0f60 RCX: 0000000000000027\n [3310.968149] RDX: ffff974ecf098a08 RSI: 0000000000000001 RDI: ffff974ecf098a00\n [3310.968150] RBP: ffff973f147b0f08 R08: 0000000000000000 R09: ffffb284ce393c48\n [3310.968151] R10: ffffb284ce393c40 R11: ffffffff84f47468 R12: ffff973f101bfc00\n [3310.968153] R13: ffff971f20cf2000 R14: 00000000fffffff5 R15: ffff973f147b0e58\n [3310.968154] FS: 00007efe65468740(0000) GS:ffff974ecf080000(0000) knlGS:0000000000000000\n [3310.968157] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n [3310.968158] CR2: 000055691bcbe260 CR3: 000000105cfa4001 CR4: 0000000000770ee0\n [3310.968160] PKRU: 55555554\n [3310.968161] Call Trace:\n [3310.968167] ? dput+0xd4/0x300\n [3310.968174] btrfs_sync_file+0x3f1/0x490\n [3310.968180] __x64_sys_fsync+0x33/0x60\n [3310.968185] do_syscall_64+0x3b/0x90\n [3310.968190] entry_SYSCALL_64_after_hwframe+0x44/0xae\n [3310.968194] RIP: 0033:0x7efe6557329b\n [3310.968200] RSP: 002b:00007ffe0236ebc0 EFLAGS: 00000293 ORIG_RAX: 000000000000004a\n [3310.968203] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efe6557329b\n [3310.968204] RDX: 0000000000000000 RSI: 00007efe58d77010 RDI: 0000000000000006\n [3310.968205] RBP: 0000000004000000 R08: 0000000000000000 R09: 00007efe58d77010\n [3310.968207] R10: 0000000016cacc0c R11: 0000000000000293 R12: 00007efe5ce95980\n [3310.968208] R13: 0000000000000000 R14: 00007efe6447c790 R15: 0000000c80000000\n [3310.968212] ---[ end trace 1a346f4d3c0d96ba ]---\n [3310.968214] BTRFS: error (device sda) in cleanup_transaction:1946: errno=-11 unknown\n\nThe abort occurs because of a write hole while writing out freeing tree\nnodes of a tree-log tree. For zoned btrfs, we re-dirty a freed tree\nnode to ensure btrfs can write the region and does not leave a hole on\nwrite on a zoned device. The current code fails to re-dirty a node\nwhen the tree-log tree's depth is greater or equal to 2. That leads to\na transaction abort with -EAGAIN.\n\nFix the issue by properly re-dirtying a node on walking up the tree."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T11:42:41.358Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47510", "state": "PUBLISHED", "dateUpdated": "2024-11-04T11:42:41.358Z", "dateReserved": "2024-05-24T15:02:54.823Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-24T15:09:26.019Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix re-dirty process of tree-log nodes\n\nThere is a report of a transaction abort of -EAGAIN with the following\nscript.\n\n #!/bin/sh\n\n for d in sda sdb; do\n mkfs.btrfs -d single -m single -f /dev/\\${d}\n done\n\n mount /dev/sda /mnt/test\n mount /dev/sdb /mnt/scratch\n\n for dir in test scratch; do\n echo 3 >/proc/sys/vm/drop_caches\n fio --directory=/mnt/\\${dir} --name=fio.\\${dir} --rw=read --size=50G --bs=64m \\\n --numjobs=$(nproc) --time_based --ramp_time=5 --runtime=480 \\\n --group_reporting |& tee /dev/shm/fio.\\${dir}\n echo 3 >/proc/sys/vm/drop_caches\n done\n\n for d in sda sdb; do\n umount /dev/\\${d}\n done\n\nThe stack trace is shown in below.\n\n [3310.967991] BTRFS: error (device sda) in btrfs_commit_transaction:2341: errno=-11 unknown (Error while writing out transaction)\n [3310.968060] BTRFS info (device sda): forced readonly\n [3310.968064] BTRFS warning (device sda): Skipping commit of aborted transaction.\n [3310.968065] ------------[ cut here ]------------\n [3310.968066] BTRFS: Transaction aborted (error -11)\n [3310.968074] WARNING: CPU: 14 PID: 1684 at fs/btrfs/transaction.c:1946 btrfs_commit_transaction.cold+0x209/0x2c8\n [3310.968131] CPU: 14 PID: 1684 Comm: fio Not tainted 5.14.10-300.fc35.x86_64 #1\n [3310.968135] Hardware name: DIAWAY Tartu/Tartu, BIOS V2.01.B10 04/08/2021\n [3310.968137] RIP: 0010:btrfs_commit_transaction.cold+0x209/0x2c8\n [3310.968144] RSP: 0018:ffffb284ce393e10 EFLAGS: 00010282\n [3310.968147] RAX: 0000000000000026 RBX: ffff973f147b0f60 RCX: 0000000000000027\n [3310.968149] RDX: ffff974ecf098a08 RSI: 0000000000000001 RDI: ffff974ecf098a00\n [3310.968150] RBP: ffff973f147b0f08 R08: 0000000000000000 R09: ffffb284ce393c48\n [3310.968151] R10: ffffb284ce393c40 R11: ffffffff84f47468 R12: ffff973f101bfc00\n [3310.968153] R13: ffff971f20cf2000 R14: 00000000fffffff5 R15: ffff973f147b0e58\n [3310.968154] FS: 00007efe65468740(0000) GS:ffff974ecf080000(0000) knlGS:0000000000000000\n [3310.968157] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n [3310.968158] CR2: 000055691bcbe260 CR3: 000000105cfa4001 CR4: 0000000000770ee0\n [3310.968160] PKRU: 55555554\n [3310.968161] Call Trace:\n [3310.968167] ? dput+0xd4/0x300\n [3310.968174] btrfs_sync_file+0x3f1/0x490\n [3310.968180] __x64_sys_fsync+0x33/0x60\n [3310.968185] do_syscall_64+0x3b/0x90\n [3310.968190] entry_SYSCALL_64_after_hwframe+0x44/0xae\n [3310.968194] RIP: 0033:0x7efe6557329b\n [3310.968200] RSP: 002b:00007ffe0236ebc0 EFLAGS: 00000293 ORIG_RAX: 000000000000004a\n [3310.968203] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efe6557329b\n [3310.968204] RDX: 0000000000000000 RSI: 00007efe58d77010 RDI: 0000000000000006\n [3310.968205] RBP: 0000000004000000 R08: 0000000000000000 R09: 00007efe58d77010\n [3310.968207] R10: 0000000016cacc0c R11: 0000000000000293 R12: 00007efe5ce95980\n [3310.968208] R13: 0000000000000000 R14: 00007efe6447c790 R15: 0000000c80000000\n [3310.968212] ---[ end trace 1a346f4d3c0d96ba ]---\n [3310.968214] BTRFS: error (device sda) in cleanup_transaction:1946: errno=-11 unknown\n\nThe abort occurs because of a write hole while writing out freeing tree\nnodes of a tree-log tree. For zoned btrfs, we re-dirty a freed tree\nnode to ensure btrfs can write the region and does not leave a hole on\nwrite on a zoned device. The current code fails to re-dirty a node\nwhen the tree-log tree's depth is greater or equal to 2. That leads to\na transaction abort with -EAGAIN.\n\nFix the issue by properly re-dirtying a node on walking up the tree."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: corrige el proceso re-sucio de los nodos de registro de \u00e1rbol Hay un informe de una transacci\u00f3n cancelada de -EAGAIN with the following script. #!/bin/sh for d in sda sdb; do mkfs.btrfs -d single -m single -f /dev/\\${d} done mount /dev/sda /mnt/test mount /dev/sdb /mnt/scratch for dir in test scratch; do echo 3 >/proc/sys/vm/drop_caches fio --directory=/mnt/\\${dir} --name=fio.\\${dir} --rw=read --size=50G --bs=64m \\ --numjobs=$(nproc) --time_based --ramp_time=5 --runtime=480 \\ --group_reporting |& tee /dev/shm/fio.\\${dir} echo 3 >/proc/sys/vm/drop_caches done for d in sda sdb; do umount /dev/\\${d} done The stack trace is shown in below. [3310.967991] BTRFS: error (device sda) in btrfs_commit_transaction:2341: errno=-11 unknown (Error while writing out transaction) [3310.968060] BTRFS info (device sda): forced readonly [3310.968064] BTRFS warning (device sda): Skipping commit of aborted transaction. [3310.968065] ------------[ cut here ]------------ [3310.968066] BTRFS: Transaction aborted (error -11) [3310.968074] WARNING: CPU: 14 PID: 1684 at fs/btrfs/transaction.c:1946 btrfs_commit_transaction.cold+0x209/0x2c8 [3310.968131] CPU: 14 PID: 1684 Comm: fio Not tainted 5.14.10-300.fc35.x86_64 #1 [3310.968135] Hardware name: DIAWAY Tartu/Tartu, BIOS V2.01.B10 04/08/2021 [3310.968137] RIP: 0010:btrfs_commit_transaction.cold+0x209/0x2c8 [3310.968144] RSP: 0018:ffffb284ce393e10 EFLAGS: 00010282 [3310.968147] RAX: 0000000000000026 RBX: ffff973f147b0f60 RCX: 0000000000000027 [3310.968149] RDX: ffff974ecf098a08 RSI: 0000000000000001 RDI: ffff974ecf098a00 [3310.968150] RBP: ffff973f147b0f08 R08: 0000000000000000 R09: ffffb284ce393c48 [3310.968151] R10: ffffb284ce393c40 R11: ffffffff84f47468 R12: ffff973f101bfc00 [3310.968153] R13: ffff971f20cf2000 R14: 00000000fffffff5 R15: ffff973f147b0e58 [3310.968154] FS: 00007efe65468740(0000) GS:ffff974ecf080000(0000) knlGS:0000000000000000 [3310.968157] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [3310.968158] CR2: 000055691bcbe260 CR3: 000000105cfa4001 CR4: 0000000000770ee0 [3310.968160] PKRU: 55555554 [3310.968161] Call Trace: [3310.968167] ? dput+0xd4/0x300 [3310.968174] btrfs_sync_file+0x3f1/0x490 [3310.968180] __x64_sys_fsync+0x33/0x60 [3310.968185] do_syscall_64+0x3b/0x90 [3310.968190] entry_SYSCALL_64_after_hwframe+0x44/0xae [3310.968194] RIP: 0033:0x7efe6557329b [3310.968200] RSP: 002b:00007ffe0236ebc0 EFLAGS: 00000293 ORIG_RAX: 000000000000004a [3310.968203] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efe6557329b [3310.968204] RDX: 0000000000000000 RSI: 00007efe58d77010 RDI: 0000000000000006 [3310.968205] RBP: 0000000004000000 R08: 0000000000000000 R09: 00007efe58d77010 [3310.968207] R10: 0000000016cacc0c R11: 0000000000000293 R12: 00007efe5ce95980 [3310.968208] R13: 0000000000000000 R14: 00007efe6447c790 R15: 0000000c80000000 [3310.968212] ---[ end trace 1a346f4d3c0d96ba ]--- [3310.968214] BTRFS: error (device sda) in cleanup_transaction:1946: errno=-11 unknown. El aborto se produce debido a un agujero de escritura mientras se escriben los nodos del \u00e1rbol liberado de un \u00e1rbol de registro de \u00e1rbol. Para btrfs zonificados, volvemos a ensuciar un nodo de \u00e1rbol liberado para garantizar que btrfs pueda escribir la regi\u00f3n y no deje un agujero al escribir en un dispositivo zonificado. El c\u00f3digo actual no puede volver a ensuciar un nodo cuando la profundidad del \u00e1rbol de registro es mayor o igual a 2. Eso conduce a una transacci\u00f3n abortada con -EAGAIN. Solucione el problema volviendo a ensuciar adecuadamente un nodo al subir al \u00e1rbol."}], "id": "CVE-2021-47510", "lastModified": "2024-05-24T18:09:20.027", "metrics": {}, "published": "2024-05-24T15:15:12.000", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/477675049ca803aa95ff77468ffbddd966b415b0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/84c25448929942edacba905cecc0474e91114e7a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: btrfs: fix re-dirty process of tree-log nodes", "id": "2283442", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2283442"}, "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-841", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: fix re-dirty process of tree-log nodes\nThere is a report of a transaction abort of -EAGAIN with the following\nscript.\n#!/bin/sh\nfor d in sda sdb; do\nmkfs.btrfs -d single -m single -f /dev/\\${d}\ndone\nmount /dev/sda /mnt/test\nmount /dev/sdb /mnt/scratch\nfor dir in test scratch; do\necho 3 >/proc/sys/vm/drop_caches\nfio --directory=/mnt/\\${dir} --name=fio.\\${dir} --rw=read --size=50G --bs=64m \\\n--numjobs=$(nproc) --time_based --ramp_time=5 --runtime=480 \\\n--group_reporting |& tee /dev/shm/fio.\\${dir}\necho 3 >/proc/sys/vm/drop_caches\ndone\nfor d in sda sdb; do\numount /dev/\\${d}\ndone\nThe stack trace is shown in below.\n[3310.967991] BTRFS: error (device sda) in btrfs_commit_transaction:2341: errno=-11 unknown (Error while writing out transaction)\n[3310.968060] BTRFS info (device sda): forced readonly\n[3310.968064] BTRFS warning (device sda): Skipping commit of aborted transaction.\n[3310.968065] ------------[ cut here ]------------\n[3310.968066] BTRFS: Transaction aborted (error -11)\n[3310.968074] WARNING: CPU: 14 PID: 1684 at fs/btrfs/transaction.c:1946 btrfs_commit_transaction.cold+0x209/0x2c8\n[3310.968131] CPU: 14 PID: 1684 Comm: fio Not tainted 5.14.10-300.fc35.x86_64 #1\n[3310.968135] Hardware name: DIAWAY Tartu/Tartu, BIOS V2.01.B10 04/08/2021\n[3310.968137] RIP: 0010:btrfs_commit_transaction.cold+0x209/0x2c8\n[3310.968144] RSP: 0018:ffffb284ce393e10 EFLAGS: 00010282\n[3310.968147] RAX: 0000000000000026 RBX: ffff973f147b0f60 RCX: 0000000000000027\n[3310.968149] RDX: ffff974ecf098a08 RSI: 0000000000000001 RDI: ffff974ecf098a00\n[3310.968150] RBP: ffff973f147b0f08 R08: 0000000000000000 R09: ffffb284ce393c48\n[3310.968151] R10: ffffb284ce393c40 R11: ffffffff84f47468 R12: ffff973f101bfc00\n[3310.968153] R13: ffff971f20cf2000 R14: 00000000fffffff5 R15: ffff973f147b0e58\n[3310.968154] FS: 00007efe65468740(0000) GS:ffff974ecf080000(0000) knlGS:0000000000000000\n[3310.968157] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[3310.968158] CR2: 000055691bcbe260 CR3: 000000105cfa4001 CR4: 0000000000770ee0\n[3310.968160] PKRU: 55555554\n[3310.968161] Call Trace:\n[3310.968167] ? dput+0xd4/0x300\n[3310.968174] btrfs_sync_file+0x3f1/0x490\n[3310.968180] __x64_sys_fsync+0x33/0x60\n[3310.968185] do_syscall_64+0x3b/0x90\n[3310.968190] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[3310.968194] RIP: 0033:0x7efe6557329b\n[3310.968200] RSP: 002b:00007ffe0236ebc0 EFLAGS: 00000293 ORIG_RAX: 000000000000004a\n[3310.968203] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efe6557329b\n[3310.968204] RDX: 0000000000000000 RSI: 00007efe58d77010 RDI: 0000000000000006\n[3310.968205] RBP: 0000000004000000 R08: 0000000000000000 R09: 00007efe58d77010\n[3310.968207] R10: 0000000016cacc0c R11: 0000000000000293 R12: 00007efe5ce95980\n[3310.968208] R13: 0000000000000000 R14: 00007efe6447c790 R15: 0000000c80000000\n[3310.968212] ---[ end trace 1a346f4d3c0d96ba ]---\n[3310.968214] BTRFS: error (device sda) in cleanup_transaction:1946: errno=-11 unknown\nThe abort occurs because of a write hole while writing out freeing tree\nnodes of a tree-log tree. For zoned btrfs, we re-dirty a freed tree\nnode to ensure btrfs can write the region and does not leave a hole on\nwrite on a zoned device. The current code fails to re-dirty a node\nwhen the tree-log tree's depth is greater or equal to 2. That leads to\na transaction abort with -EAGAIN.\nFix the issue by properly re-dirtying a node on walking up the tree."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2021-47510", "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": "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": "2024-05-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47510\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47510\nhttps://lore.kernel.org/linux-cve-announce/2024052430-CVE-2021-47510-7c3f@gregkh/T"], "statement": "Red Hat Enterprise Linux is not vulnerable to this CVE, as it does not affect the versions or configurations of the Linux kernel used in its distributions.", "threat_severity": "Moderate", "upstream_fix": "kernel 5.15.8, kernel 5.16"}