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CVE-2022-49788— misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram()

EPSS 0.03% · P9

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux06164d2b72aa752ce4633184b3e0d97601017135< 7ccf7229b96fadc3a185d1391f814a604c7ef609affected
06164d2b72aa752ce4633184b3e0d97601017135< f04586c2315cfd03d72ad0395705435e7ed07b1aaffected
06164d2b72aa752ce4633184b3e0d97601017135< 5a275528025ae4bc7e2232866856dfebf84b2fadaffected
06164d2b72aa752ce4633184b3e0d97601017135< e7061dd1fef2dfb6458cd521aef27aa66f510d31affected
06164d2b72aa752ce4633184b3e0d97601017135< 62634b43d3c4e1bf62fd540196f7081bf0885c0aaffected
06164d2b72aa752ce4633184b3e0d97601017135< 8e2f33c598370bcf828bab4d667d1d38bcd3c57daffected
06164d2b72aa752ce4633184b3e0d97601017135< 76c50d77b928a33e5290aaa9fdc10e88254ff8c7affected
06164d2b72aa752ce4633184b3e0d97601017135< e5b0d06d9b10f5f43101bd6598b076c347f9295faffected
… +10 more rows
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I. Basic Information for CVE-2022-49788

Vulnerability Information
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Vulnerability Title
misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram()
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于vmci_host驱动中未初始化数据泄露，可能导致内核信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 06164d2b72aa752ce4633184b3e0d97601017135 ~ 7ccf7229b96fadc3a185d1391f814a604c7ef609 -
LinuxLinux 3.9 -

II. Public POCs for CVE-2022-49788

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III. Intelligence Information for CVE-2022-49788

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Patch · 8

Same Patch Batch · Linux · 2025-05-01 · 245 CVEs total

CVE-2022-49854mctp: Fix an error handling path in mctp_init()
CVE-2022-49837bpf: Fix memory leaks in __check_func_call
CVE-2022-49838sctp: clear out_curr if all frag chunks of current msg are pruned
CVE-2022-49840bpf, test_run: Fix alignment problem in bpf_prog_test_run_skb()
CVE-2022-49839scsi: scsi_transport_sas: Fix error handling in sas_phy_add()
CVE-2022-49841serial: imx: Add missing .thaw_noirq hook
CVE-2022-49842ASoC: core: Fix use-after-free in snd_soc_exit()
CVE-2022-49844can: dev: fix skb drop check
CVE-2022-49845can: j1939: j1939_send_one(): fix missing CAN header initialization
CVE-2022-49846udf: Fix a slab-out-of-bounds write bug in udf_find_entry()
CVE-2022-49847net: ethernet: ti: am65-cpsw: Fix segmentation fault at module unload
CVE-2022-49849btrfs: fix match incorrectly in dev_args_match_device
CVE-2022-49848phy: qcom-qmp-combo: fix NULL-deref on runtime resume
CVE-2022-49850nilfs2: fix deadlock in nilfs_count_free_blocks()
CVE-2022-49851riscv: fix reserved memory setup
CVE-2022-49852riscv: process: fix kernel info leakage
CVE-2022-49862tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header
CVE-2022-49864drm/amdkfd: Fix NULL pointer dereference in svm_migrate_to_ram()
CVE-2022-49865ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network
CVE-2022-49863can: af_can: fix NULL pointer dereference in can_rx_register()

Showing top 20 of 245 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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