{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-38139", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.987Z", "datePublished": "2025-07-03T08:35:41.271Z", "dateUpdated": "2025-07-28T04:13:17.620Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-07-28T04:13:17.620Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix oops in write-retry from mis-resetting the subreq iterator\n\nFix the resetting of the subrequest iterator in netfs_retry_write_stream()\nto use the iterator-reset function as the iterator may have been shortened\nby a previous retry. In such a case, the amount of data to be written by\nthe subrequest is not \"subreq->len\" but \"subreq->len -\nsubreq->transferred\".\n\nWithout this, KASAN may see an error in iov_iter_revert():\n\n BUG: KASAN: slab-out-of-bounds in iov_iter_revert lib/iov_iter.c:633 [inline]\n BUG: KASAN: slab-out-of-bounds in iov_iter_revert+0x443/0x5a0 lib/iov_iter.c:611\n Read of size 4 at addr ffff88802912a0b8 by task kworker/u32:7/1147\n\n CPU: 1 UID: 0 PID: 1147 Comm: kworker/u32:7 Not tainted 6.15.0-rc6-syzkaller-00052-g9f35e33144ae #0 PREEMPT(full)\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\n Workqueue: events_unbound netfs_write_collection_worker\n Call Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:408 [inline]\n print_report+0xc3/0x670 mm/kasan/report.c:521\n kasan_report+0xe0/0x110 mm/kasan/report.c:634\n iov_iter_revert lib/iov_iter.c:633 [inline]\n iov_iter_revert+0x443/0x5a0 lib/iov_iter.c:611\n netfs_retry_write_stream fs/netfs/write_retry.c:44 [inline]\n netfs_retry_writes+0x166d/0x1a50 fs/netfs/write_retry.c:231\n netfs_collect_write_results fs/netfs/write_collect.c:352 [inline]\n netfs_write_collection_worker+0x23fd/0x3830 fs/netfs/write_collect.c:374\n process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238\n process_scheduled_works kernel/workqueue.c:3319 [inline]\n worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400\n kthread+0x3c2/0x780 kernel/kthread.c:464\n ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245\n </TASK>"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/netfs/write_retry.c"], "versions": [{"version": "cd0277ed0c188dd40e7744e89299af7b78831ca4", "lessThan": "e0fefe9bc07e6101fdc57abda3644f296c114e31", "status": "affected", "versionType": "git"}, {"version": "cd0277ed0c188dd40e7744e89299af7b78831ca4", "lessThan": "bd0edaf99a920b1a9decd773179caacacb61d0fd", "status": "affected", "versionType": "git"}, {"version": "cd0277ed0c188dd40e7744e89299af7b78831ca4", "lessThan": "4481f7f2b3df123ec77e828c849138f75cff2bf2", "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/netfs/write_retry.c"], "versions": [{"version": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.37", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.3", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16", "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": "6.12", "versionEndExcluding": "6.12.37"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.15.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e0fefe9bc07e6101fdc57abda3644f296c114e31"}, {"url": "https://git.kernel.org/stable/c/bd0edaf99a920b1a9decd773179caacacb61d0fd"}, {"url": "https://git.kernel.org/stable/c/4481f7f2b3df123ec77e828c849138f75cff2bf2"}], "title": "netfs: Fix oops in write-retry from mis-resetting the subreq iterator", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix oops in write-retry from mis-resetting the subreq iterator\n\nFix the resetting of the subrequest iterator in netfs_retry_write_stream()\nto use the iterator-reset function as the iterator may have been shortened\nby a previous retry. In such a case, the amount of data to be written by\nthe subrequest is not \"subreq->len\" but \"subreq->len -\nsubreq->transferred\".\n\nWithout this, KASAN may see an error in iov_iter_revert():\n\n BUG: KASAN: slab-out-of-bounds in iov_iter_revert lib/iov_iter.c:633 [inline]\n BUG: KASAN: slab-out-of-bounds in iov_iter_revert+0x443/0x5a0 lib/iov_iter.c:611\n Read of size 4 at addr ffff88802912a0b8 by task kworker/u32:7/1147\n\n CPU: 1 UID: 0 PID: 1147 Comm: kworker/u32:7 Not tainted 6.15.0-rc6-syzkaller-00052-g9f35e33144ae #0 PREEMPT(full)\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\n Workqueue: events_unbound netfs_write_collection_worker\n Call Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:408 [inline]\n print_report+0xc3/0x670 mm/kasan/report.c:521\n kasan_report+0xe0/0x110 mm/kasan/report.c:634\n iov_iter_revert lib/iov_iter.c:633 [inline]\n iov_iter_revert+0x443/0x5a0 lib/iov_iter.c:611\n netfs_retry_write_stream fs/netfs/write_retry.c:44 [inline]\n netfs_retry_writes+0x166d/0x1a50 fs/netfs/write_retry.c:231\n netfs_collect_write_results fs/netfs/write_collect.c:352 [inline]\n netfs_write_collection_worker+0x23fd/0x3830 fs/netfs/write_collect.c:374\n process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238\n process_scheduled_works kernel/workqueue.c:3319 [inline]\n worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400\n kthread+0x3c2/0x780 kernel/kthread.c:464\n ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245\n </TASK>"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfs: Se corrige un error en el reintento de escritura debido al restablecimiento incorrecto del iterador de la subsolicitud. Se corrige el restablecimiento del iterador de la subsolicitud en netfs_retry_write_stream() para usar la funci\u00f3n iterator-reset, ya que el iterador podr\u00eda haberse acortado debido a un reintento anterior. En tal caso, la cantidad de datos que debe escribir la subsolicitud no es \"subreq-&gt;len\", sino \"subreq-&gt;len - subreq-&gt;transferred\". Sin esto, KASAN puede ver un error en iov_iter_revert(): ERROR: KASAN: slab-out-of-bounds en iov_iter_revert lib/iov_iter.c:633 [en l\u00ednea] ERROR: KASAN: slab-out-of-bounds en iov_iter_revert+0x443/0x5a0 lib/iov_iter.c:611 Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff88802912a0b8 por la tarea kworker/u32:7/1147 CPU: 1 UID: 0 PID: 1147 Comm: kworker/u32:7 No contaminado 6.15.0-rc6-syzkaller-00052-g9f35e33144ae #0 PREEMPT(full) Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 01/04/2014 Cola de trabajo: events_unbound netfs_write_collection_worker Rastreo de llamadas __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xc3/0x670 mm/kasan/report.c:521 kasan_report+0xe0/0x110 mm/kasan/report.c:634 iov_iter_revert lib/iov_iter.c:633 [inline] iov_iter_revert+0x443/0x5a0 lib/iov_iter.c:611 netfs_retry_write_stream fs/netfs/write_retry.c:44 [inline] netfs_retry_writes+0x166d/0x1a50 fs/netfs/write_retry.c:231 netfs_collect_write_results fs/netfs/write_collect.c:352 [inline] netfs_write_collection_worker+0x23fd/0x3830 fs/netfs/write_collect.c:374 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 "}], "id": "CVE-2025-38139", "lastModified": "2025-07-10T15:15:26.740", "metrics": {}, "published": "2025-07-03T09:15:28.500", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4481f7f2b3df123ec77e828c849138f75cff2bf2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bd0edaf99a920b1a9decd773179caacacb61d0fd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e0fefe9bc07e6101fdc57abda3644f296c114e31"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: netfs: Fix oops in write-retry from mis-resetting the subreq iterator", "id": "2376051", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2376051"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetfs: Fix oops in write-retry from mis-resetting the subreq iterator\nFix the resetting of the subrequest iterator in netfs_retry_write_stream()\nto use the iterator-reset function as the iterator may have been shortened\nby a previous retry. In such a case, the amount of data to be written by\nthe subrequest is not \"subreq->len\" but \"subreq->len -\nsubreq->transferred\".\nWithout this, KASAN may see an error in iov_iter_revert():\nBUG: KASAN: slab-out-of-bounds in iov_iter_revert lib/iov_iter.c:633 [inline]\nBUG: KASAN: slab-out-of-bounds in iov_iter_revert+0x443/0x5a0 lib/iov_iter.c:611\nRead of size 4 at addr ffff88802912a0b8 by task kworker/u32:7/1147\nCPU: 1 UID: 0 PID: 1147 Comm: kworker/u32:7 Not tainted 6.15.0-rc6-syzkaller-00052-g9f35e33144ae #0 PREEMPT(full)\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\nWorkqueue: events_unbound netfs_write_collection_worker\nCall Trace:\n<TASK>\n__dump_stack lib/dump_stack.c:94 [inline]\ndump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\nprint_address_description mm/kasan/report.c:408 [inline]\nprint_report+0xc3/0x670 mm/kasan/report.c:521\nkasan_report+0xe0/0x110 mm/kasan/report.c:634\niov_iter_revert lib/iov_iter.c:633 [inline]\niov_iter_revert+0x443/0x5a0 lib/iov_iter.c:611\nnetfs_retry_write_stream fs/netfs/write_retry.c:44 [inline]\nnetfs_retry_writes+0x166d/0x1a50 fs/netfs/write_retry.c:231\nnetfs_collect_write_results fs/netfs/write_collect.c:352 [inline]\nnetfs_write_collection_worker+0x23fd/0x3830 fs/netfs/write_collect.c:374\nprocess_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238\nprocess_scheduled_works kernel/workqueue.c:3319 [inline]\nworker_thread+0x6c8/0xf10 kernel/workqueue.c:3400\nkthread+0x3c2/0x780 kernel/kthread.c:464\nret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153\nret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245\n</TASK>"], "name": "CVE-2025-38139", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "2025-07-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38139\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38139\nhttps://lore.kernel.org/linux-cve-announce/2025070333-CVE-2025-38139-5152@gregkh/T"], "threat_severity": "Moderate"}