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CVE-2022-49881— wifi: cfg80211: fix memory leak in query_regdb_file()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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query_regdb_file未正确处理固件请求失败，可能导致内存泄漏。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.20% · P10

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 007f6c5e6eb45c81ee89368a5f226572ae638831< 219446396786330937bcd382a7bc4ccd767383bc affected
007f6c5e6eb45c81ee89368a5f226572ae638831< 0ede1a988299e95d54bd89551fd635980572e920 affected
007f6c5e6eb45c81ee89368a5f226572ae638831< e1e12180321f416d83444f2cdc9259e0f5093d35 affected
007f6c5e6eb45c81ee89368a5f226572ae638831< 38c9fa2cc6bf4b6e1a74057aef8b5cffd23d3264 affected
007f6c5e6eb45c81ee89368a5f226572ae638831< e9b5a4566d5bc71cc901be50d1fa24da00613120 affected
007f6c5e6eb45c81ee89368a5f226572ae638831< 57b962e627ec0ae53d4d16d7bd1033e27e67677a affected
4.15 affected
< 4.15 unaffected
… +6 more rows
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I. Basic Information for CVE-2022-49881

Vulnerability Information
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Vulnerability Title
wifi: cfg80211: fix memory leak in query_regdb_file()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: fix memory leak in query_regdb_file() In the function query_regdb_file() the alpha2 parameter is duplicated using kmemdup() and subsequently freed in regdb_fw_cb(). However, request_firmware_nowait() can fail without calling regdb_fw_cb() and thus leak memory.
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query_regdb_file未正确处理固件请求失败，可能导致内存泄漏。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 007f6c5e6eb45c81ee89368a5f226572ae638831 ~ 219446396786330937bcd382a7bc4ccd767383bc -
Linux Linux 4.15 -

II. Public POCs for CVE-2022-49881

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III. Intelligence Information for CVE-2022-49881

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Patches & Fixes for CVE-2022-49881 (6)

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

CVE-2025-37750 9.8 CRITICAL smb: client: fix UAF in decryption with multichannel
CVE-2025-37778 9.8 CRITICAL ksmbd: Fix dangling pointer in krb_authenticate
CVE-2022-49770 9.8 CRITICAL ceph: avoid putting the realm twice when decoding snaps fails
CVE-2022-49931 8.8 HIGH IB/hfi1: Correctly move list in sc_disable()
CVE-2025-37776 8.8 HIGH ksmbd: fix use-after-free in smb_break_all_levII_oplock()
CVE-2025-37777 8.8 HIGH ksmbd: fix use-after-free in __smb2_lease_break_noti()
CVE-2025-37790 8.8 HIGH net: mctp: Set SOCK_RCU_FREE
CVE-2022-49910 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free caused by l2cap_reassemble_sdu
CVE-2022-49886 8.4 HIGH x86/tdx: Panic on bad configs that #VE on "private" memory access
CVE-2025-23159 8.4 HIGH media: venus: hfi: add a check to handle OOB in sfr region
CVE-2025-37749 8.2 HIGH net: ppp: Add bound checking for skb data on ppp_sync_txmung
CVE-2025-37774 7.8 HIGH slab: ensure slab->obj_exts is clear in a newly allocated slab page
CVE-2025-37789 7.8 HIGH net: openvswitch: fix nested key length validation in the set() action
CVE-2025-37779 7.8 HIGH lib/iov_iter: fix to increase non slab folio refcount
CVE-2022-49920 7.8 HIGH netfilter: nf_tables: netlink notifier might race to release objects
CVE-2022-49919 7.8 HIGH netfilter: nf_tables: release flow rule object from commit path
CVE-2025-37756 7.8 HIGH net: tls: explicitly disallow disconnect
CVE-2025-37761 7.8 HIGH drm/xe: Fix an out-of-bounds shift when invalidating TLB
CVE-2025-37763 7.8 HIGH drm/imagination: take paired job reference
CVE-2025-23141 7.8 HIGH KVM: x86: Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux