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CVE-2022-49759— VMCI: Use threaded irqs instead of tasklets

AI Predicted 5.5 Difficulty: Moderate EPSS 0.12% · P3

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinux463713eb6164b6577f8e91447c7745628215531b< 548ea9dd5e01b0ecf53d2563004c80abd636743daffected
463713eb6164b6577f8e91447c7745628215531b< 3daed6345d5880464f46adab871d208e1baa2f3aaffected
5.18affected
< 5.18unaffected
6.1.8≤ 6.1.*unaffected
6.2≤ *unaffected
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I. Basic Information for CVE-2022-49759

Vulnerability Information
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Vulnerability Title
VMCI: Use threaded irqs instead of tasklets
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: VMCI: Use threaded irqs instead of tasklets The vmci_dispatch_dgs() tasklet function calls vmci_read_data() which uses wait_event() resulting in invalid sleep in an atomic context (and therefore potentially in a deadlock). Use threaded irqs to fix this issue and completely remove usage of tasklets. [ 20.264639] BUG: sleeping function called from invalid context at drivers/misc/vmw_vmci/vmci_guest.c:145 [ 20.264643] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 762, name: vmtoolsd [ 20.264645] preempt_count: 101, expected: 0 [ 20.264646] RCU nest depth: 0, expected: 0 [ 20.264647] 1 lock held by vmtoolsd/762: [ 20.264648] #0: ffff0000874ae440 (sk_lock-AF_VSOCK){+.+.}-{0:0}, at: vsock_connect+0x60/0x330 [vsock] [ 20.264658] Preemption disabled at: [ 20.264659] [<ffff80000151d7d8>] vmci_send_datagram+0x44/0xa0 [vmw_vmci] [ 20.264665] CPU: 0 PID: 762 Comm: vmtoolsd Not tainted 5.19.0-0.rc8.20220727git39c3c396f813.60.fc37.aarch64 #1 [ 20.264667] Hardware name: VMware, Inc. VBSA/VBSA, BIOS VEFI 12/31/2020 [ 20.264668] Call trace: [ 20.264669] dump_backtrace+0xc4/0x130 [ 20.264672] show_stack+0x24/0x80 [ 20.264673] dump_stack_lvl+0x88/0xb4 [ 20.264676] dump_stack+0x18/0x34 [ 20.264677] __might_resched+0x1a0/0x280 [ 20.264679] __might_sleep+0x58/0x90 [ 20.264681] vmci_read_data+0x74/0x120 [vmw_vmci] [ 20.264683] vmci_dispatch_dgs+0x64/0x204 [vmw_vmci] [ 20.264686] tasklet_action_common.constprop.0+0x13c/0x150 [ 20.264688] tasklet_action+0x40/0x50 [ 20.264689] __do_softirq+0x23c/0x6b4 [ 20.264690] __irq_exit_rcu+0x104/0x214 [ 20.264691] irq_exit_rcu+0x1c/0x50 [ 20.264693] el1_interrupt+0x38/0x6c [ 20.264695] el1h_64_irq_handler+0x18/0x24 [ 20.264696] el1h_64_irq+0x68/0x6c [ 20.264697] preempt_count_sub+0xa4/0xe0 [ 20.264698] _raw_spin_unlock_irqrestore+0x64/0xb0 [ 20.264701] vmci_send_datagram+0x7c/0xa0 [vmw_vmci] [ 20.264703] vmci_datagram_dispatch+0x84/0x100 [vmw_vmci] [ 20.264706] vmci_datagram_send+0x2c/0x40 [vmw_vmci] [ 20.264709] vmci_transport_send_control_pkt+0xb8/0x120 [vmw_vsock_vmci_transport] [ 20.264711] vmci_transport_connect+0x40/0x7c [vmw_vsock_vmci_transport] [ 20.264713] vsock_connect+0x278/0x330 [vsock] [ 20.264715] __sys_connect_file+0x8c/0xc0 [ 20.264718] __sys_connect+0x84/0xb4 [ 20.264720] __arm64_sys_connect+0x2c/0x3c [ 20.264721] invoke_syscall+0x78/0x100 [ 20.264723] el0_svc_common.constprop.0+0x68/0x124 [ 20.264724] do_el0_svc+0x38/0x4c [ 20.264725] el0_svc+0x60/0x180 [ 20.264726] el0t_64_sync_handler+0x11c/0x150 [ 20.264728] el0t_64_sync+0x190/0x194
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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使用tasklet导致无效睡眠。
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 463713eb6164b6577f8e91447c7745628215531b ~ 548ea9dd5e01b0ecf53d2563004c80abd636743d -
LinuxLinux 5.18 -

II. Public POCs for CVE-2022-49759

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III. Intelligence Information for CVE-2022-49759

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Same Patch Batch · Linux · 2025-03-27 · 124 CVEs total

CVE-2023-530069.8 CRITICALcifs: Fix oops due to uncleared server->smbd_conn in reconnect
CVE-2025-218768.8 HIGHiommu/vt-d: Fix suspicious RCU usage
CVE-2025-218908.2 HIGHidpf: fix checksums set in idpf_rx_rsc()
CVE-2023-529837.8 HIGHblock, bfq: fix uaf for bfqq in bic_set_bfqq()
CVE-2023-529307.8 HIGHdrm/i915: Fix potential bit_17 double-free
CVE-2023-529317.8 HIGHdrm/i915: Avoid potential vm use-after-free
CVE-2023-529347.8 HIGHmm/MADV_COLLAPSE: catch !none !huge !bad pmd lookups
CVE-2023-529357.8 HIGHmm/khugepaged: fix ->anon_vma race
CVE-2025-218677.8 HIGHbpf, test_run: Fix use-after-free issue in eth_skb_pkt_type()
CVE-2022-497607.8 HIGHmm/hugetlb: fix PTE marker handling in hugetlb_change_protection()
CVE-2023-529737.8 HIGHvc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF
CVE-2023-529747.8 HIGHscsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddress
CVE-2023-529757.8 HIGHscsi: iscsi_tcp: Fix UAF during logout when accessing the shost ipaddress
CVE-2023-530097.8 HIGHdrm/amdkfd: Add sync after creating vram bo
CVE-2023-530337.8 HIGHnetfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits
CVE-2023-530287.8 HIGHRevert "wifi: mac80211: fix memory leak in ieee80211_if_add()"
CVE-2023-530267.8 HIGHRDMA/core: Fix ib block iterator counter overflow
CVE-2023-530237.8 HIGHnet: nfc: Fix use-after-free in local_cleanup()
CVE-2023-530217.8 HIGHnet/sched: sch_taprio: fix possible use-after-free
CVE-2023-529887.8 HIGHALSA: hda/via: Avoid potential array out-of-bound in add_secret_dac_path()

Showing top 20 of 124 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-49759

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