Answer in brief
CVE-2022-49788 records a Medium severity (CVSS 5.5) vulnerability in misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram(). 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 5.5. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=06164d2b72aa752ce4633184b3e0d97601017135 <7ccf7229b96fadc3a185d1391f814a604c7ef609 || >=06164d2b72aa752ce4633184b3e0d97601017135 <f04586c2315cfd03d72ad0395705435e7ed07b1a || >=06164d2b72aa752ce4633184b3e0d97601017135 <5a275528025ae4bc7e2232866856dfebf84b2fad || >=06164d2b72aa752ce4633184b3e0d97601017135 <e7061dd1fef2dfb6458cd521aef27aa66f510d31 || >=06164d2b72aa752ce4633184b3e0d97601017135 <62634b43d3c4e1bf62fd540196f7081bf0885c0a || >=06164d2b72aa752ce4633184b3e0d97601017135 <8e2f33c598370bcf828bab4d667d1d38bcd3c57d || >=06164d2b72aa752ce4633184b3e0d97601017135 <76c50d77b928a33e5290aaa9fdc10e88254ff8c7 || >=06164d2b72aa752ce4633184b3e0d97601017135 <e5b0d06d9b10f5f43101bd6598b076c347f9295f | 7ccf7229b96fadc3a185d1391f814a604c7ef609, f04586c2315cfd03d72ad0395705435e7ed07b1a, 5a275528025ae4bc7e2232866856dfebf84b2fad, e7061dd1fef2dfb6458cd521aef27aa66f510d31, 62634b43d3c4e1bf62fd540196f7081bf0885c0a, 8e2f33c598370bcf828bab4d667d1d38bcd3c57d, 76c50d77b928a33e5290aaa9fdc10e88254ff8c7, e5b0d06d9b10f5f43101bd6598b076c347f9295f |
| Linux/Linuxgeneric | 3.9 | Not reported |
Published upstream
May 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
In the Linux kernel, the following vulnerability has been resolved: misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram() `struct vmci_event_qp` allocated by qp_notify_peer() contains padding, which may carry uninitialized data to the userspace, as observed by KMSAN: BUG: KMSAN: kernel-infoleak in instrument_copy_to_user ./include/linux/instrumented.h:121 instrument_copy_to_user ./include/linux/instrumented.h:121 _copy_to_user+0x5f/0xb0 lib/usercopy.c:33 copy_to_user ./include/linux/uaccess.h:169 vmci_host_do_receive_datagram drivers/misc/vmw_vmci/vmci_host.c:431 vmci_host_unlocked_ioctl+0x33d/0x43d0 drivers/misc/vmw_vmci/vmci_host.c:925 vfs_ioctl fs/ioctl.c:51 ... Uninit was stored to memory at: kmemdup+0x74/0xb0 mm/util.c:131 dg_dispatch_as_host drivers/misc/vmw_vmci/vmci_datagram.c:271 vmci_datagram_dispatch+0x4f8/0xfc0 drivers/misc/vmw_vmci/vmci_datagram.c:339 qp_notify_peer+0x19a/0x290 drivers/misc/vmw_vmci/vmci_queue_pair.c:1479 qp_broker_attach drivers/misc/vmw_vmci/vmci_queue_pair.c:1662 qp_broker_alloc+0x2977/0x2f30 drivers/misc/vmw_vmci/vmci_queue_pair.c:1750 vmci_qp_broker_alloc+0x96/0xd0 drivers/misc/vmw_vmci/vmci_queue_pair.c:1940 vmci_host_do_alloc_queuepair drivers/misc/vmw_vmci/vmci_host.c:488 vmci_host_unlocked_ioctl+0x24fd/0x43d0 drivers/misc/vmw_vmci/vmci_host.c:927 ... Local variable ev created at: qp_notify_peer+0x54/0x290 drivers/misc/vmw_vmci/vmci_queue_pair.c:1456 qp_broker_attach drivers/misc/vmw_vmci/vmci_queue_pair.c:1662 qp_broker_alloc+0x2977/0x2f30 drivers/misc/vmw_vmci/vmci_queue_pair.c:1750 Bytes 28-31 of 48 are uninitialized Memory access of size 48 starts at ffff888035155e00 Data copied to user address 0000000020000100 Use memset() to prevent the infoleaks. Also speculatively fix qp_notify_peer_local(), which may suffer from the same problem.
Quoted source text, attributed separately from HOL analysis.