CVE-2022-49002— iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init()
Possible ATT&CK Techniques 1AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 2e45528930388658603ea24d49cf52867b928d3e< d47bc9d7bcdbb9adc9703513d964b514fee5b0bf | affected |
2e45528930388658603ea24d49cf52867b928d3e< 71c4a621985fc051ab86d3a86c749069a993fcb2 | affected | ||
2e45528930388658603ea24d49cf52867b928d3e< 876d7bfb89273997056220029ff12b1c2cc4691d | affected | ||
2e45528930388658603ea24d49cf52867b928d3e< cbdd83bd2fd67142b03ce9dbdd1eab322ff7321f | affected | ||
2e45528930388658603ea24d49cf52867b928d3e< a5c65cd56aed027f8a97fda8b691caaeb66d115e | affected | ||
2e45528930388658603ea24d49cf52867b928d3e< bdb613ef179ad4bb9d56a2533e9b30e434f1dfb7 | affected | ||
2e45528930388658603ea24d49cf52867b928d3e< 2a8f7b90681472948de172dbbf5a54cd342870aa | affected | ||
2e45528930388658603ea24d49cf52867b928d3e< 4bedbbd782ebbe7287231fea862c158d4f08a9e3 | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2022-49002
Vulnerability Information
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Vulnerability Title
iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init() for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() for the error path to avoid reference count leak.
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iommu/vt-d组件中PCI设备引用计数泄漏。
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
II. Public POCs for CVE-2022-49002
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2022-49002 (6)
Same Patch Batch · Linux · 2024-10-21 · 372 CVEs total
| CVE-2024-50033 | 9.8 CRITICAL | slip: make slhc_remember() more robust against malicious packets |
| CVE-2024-49855 | 9.8 CRITICAL | nbd: fix race between timeout and normal completion |
| CVE-2024-47695 | 9.8 CRITICAL | RDMA/rtrs-clt: Reset cid to con_num - 1 to stay in bounds |
| CVE-2022-48985 | 9.8 CRITICAL | net: mana: Fix race on per-CQ variable napi work_done |
| CVE-2022-49003 | 9.8 CRITICAL | nvme: fix SRCU protection of nvme_ns_head list |
| CVE-2024-50043 | 9.8 CRITICAL | nfsd: fix possible badness in FREE_STATEID |
| CVE-2024-50047 | 9.8 CRITICAL | smb: client: fix UAF in async decryption |
| CVE-2024-50046 | 9.8 CRITICAL | NFSv4: Prevent NULL-pointer dereference in nfs42_complete_copies() |
| CVE-2024-49996 | 9.4 CRITICAL | cifs: Fix buffer overflow when parsing NFS reparse points |
| CVE-2024-47678 | 9.4 CRITICAL | icmp: change the order of rate limits |
| CVE-2022-48962 | 8.8 HIGH | net: hisilicon: Fix potential use-after-free in hisi_femac_rx() |
| CVE-2024-49950 | 8.8 HIGH | Bluetooth: L2CAP: Fix uaf in l2cap_connect |
| CVE-2024-49939 | 8.8 HIGH | wifi: rtw89: avoid to add interface to list twice when SER |
| CVE-2022-48967 | 8.8 HIGH | NFC: nci: Bounds check struct nfc_target arrays |
| CVE-2022-48964 | 8.8 HIGH | ravb: Fix potential use-after-free in ravb_rx_gbeth() |
| CVE-2024-50029 | 8.8 HIGH | Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync |
| CVE-2024-49930 | 8.8 HIGH | wifi: ath11k: fix array out-of-bound access in SoC stats |
| CVE-2024-50041 | 8.8 HIGH | i40e: Fix macvlan leak by synchronizing access to mac_filter_hash |
| CVE-2024-49936 | 8.8 HIGH | net/xen-netback: prevent UAF in xenvif_flush_hash() |
| CVE-2022-48954 | 8.8 HIGH | s390/qeth: fix use-after-free in hsci |
Showing top 20 of 372 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
V. Comments for CVE-2022-49002
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