Answer in brief
CVE-2024-46738 records a High severity (CVSS 7.8) vulnerability in VMCI: Fix use-after-free when removing resource in vmci_resource_remove(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=bc63dedb7d46a7d690c6b6edf69136b88af06cc6 <f6365931bf7c07b2b397dbb06a4f6573cc9fae73 || >=bc63dedb7d46a7d690c6b6edf69136b88af06cc6 <b243d52b5f6f59f9d39e69b191fb3d58b94a43b1 || >=bc63dedb7d46a7d690c6b6edf69136b88af06cc6 <6c563a29857aa8053b67ee141191f69757f27f6e || >=bc63dedb7d46a7d690c6b6edf69136b88af06cc6 <ef5f4d0c5ee22d4f873116fec844ff6edaf3fa7d || >=bc63dedb7d46a7d690c6b6edf69136b88af06cc6 <b9efdf333174468651be40390cbc79c9f55d9cce || >=bc63dedb7d46a7d690c6b6edf69136b88af06cc6 <39e7e593418ccdbd151f2925fa6be1a616d16c96 || >=bc63dedb7d46a7d690c6b6edf69136b88af06cc6 <00fe5292f081f8d773e572df8e03bf6e1855fe49 || >=bc63dedb7d46a7d690c6b6edf69136b88af06cc6 <48b9a8dabcc3cf5f961b2ebcd8933bf9204babb7 | f6365931bf7c07b2b397dbb06a4f6573cc9fae73, b243d52b5f6f59f9d39e69b191fb3d58b94a43b1, 6c563a29857aa8053b67ee141191f69757f27f6e, ef5f4d0c5ee22d4f873116fec844ff6edaf3fa7d, b9efdf333174468651be40390cbc79c9f55d9cce, 39e7e593418ccdbd151f2925fa6be1a616d16c96, 00fe5292f081f8d773e572df8e03bf6e1855fe49, 48b9a8dabcc3cf5f961b2ebcd8933bf9204babb7 |
| Linux/Linuxgeneric | 3.9 | Not reported |
Published upstream
Sep 18, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: VMCI: Fix use-after-free when removing resource in vmci_resource_remove() When removing a resource from vmci_resource_table in vmci_resource_remove(), the search is performed using the resource handle by comparing context and resource fields. It is possible though to create two resources with different types but same handle (same context and resource fields). When trying to remove one of the resources, vmci_resource_remove() may not remove the intended one, but the object will still be freed as in the case of the datagram type in vmci_datagram_destroy_handle(). vmci_resource_table will still hold a pointer to this freed resource leading to a use-after-free vulnerability. BUG: KASAN: use-after-free in vmci_handle_is_equal include/linux/vmw_vmci_defs.h:142 [inline] BUG: KASAN: use-after-free in vmci_resource_remove+0x3a1/0x410 drivers/misc/vmw_vmci/vmci_resource.c:147 Read of size 4 at addr ffff88801c16d800 by task syz-executor197/1592 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x82/0xa9 lib/dump_stack.c:106 print_address_description.constprop.0+0x21/0x366 mm/kasan/report.c:239 __kasan_report.cold+0x7f/0x132 mm/kasan/report.c:425 kasan_report+0x38/0x51 mm/kasan/report.c:442 vmci_handle_is_equal include/linux/vmw_vmci_defs.h:142 [inline] vmci_resource_remove+0x3a1/0x410 drivers/misc/vmw_vmci/vmci_resource.c:147 vmci_qp_broker_detach+0x89a/0x11b9 drivers/misc/vmw_vmci/vmci_queue_pair.c:2182 ctx_free_ctx+0x473/0xbe1 drivers/misc/vmw_vmci/vmci_context.c:444 kref_put include/linux/kref.h:65 [inline] vmci_ctx_put drivers/misc/vmw_vmci/vmci_context.c:497 [inline] vmci_ctx_destroy+0x170/0x1d6 drivers/misc/vmw_vmci/vmci_context.c:195 vmci_host_close+0x125/0x1ac drivers/misc/vmw_vmci/vmci_host.c:143 __fput+0x261/0xa34 fs/file_table.c:282 task_work_run+0xf0/0x194 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x184/0x189 kernel/entry/common.c:187 exit_to_user_mode_prepare+0x11b/0x123 kernel/entry/common.c:220 __syscall_exit_to_user_mode_work kernel/entry/common.c:302 [inline] syscall_exit_to_user_mode+0x18/0x42 kernel/entry/common.c:313 do_syscall_64+0x41/0x85 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x6e/0x0 This change ensures the type is also checked when removing the resource from vmci_resource_table in vmci_resource_remove().
Quoted source text, attributed separately from HOL analysis.