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CVE-2022-48784— cfg80211: fix race in netlink owner interface destruction

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cfg80211模块中发现竞争条件问题。在cfg80211_destroy_ifaces函数运行时，nl80211_netlink_notify函数仍在标记一些接口为nl_owner_dead。

AI Predicted 4.4 Difficulty: Hard EPSS 0.17% · P7

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux ea6b2098dd02789f68770fd3d5a373732207be2f< 241e633cb379c4f332fc1baf2abec95ec840cbeb affected
ea6b2098dd02789f68770fd3d5a373732207be2f< c979f792a2baf6d0f3419587668a1a6eba46a3d2 affected
ea6b2098dd02789f68770fd3d5a373732207be2f< f0a6fd1527067da537e9c48390237488719948ed affected
2e4f97122f3a9df870dfe9671994136448890768 affected
5.12.1< 5.13 affected
5.13 affected
< 5.13 unaffected
5.15.25≤ 5.15.* unaffected
… +2 more rows
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I. Basic Information for CVE-2022-48784

Vulnerability Information
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Vulnerability Title
cfg80211: fix race in netlink owner interface destruction
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cfg80211: fix race in netlink owner interface destruction My previous fix here to fix the deadlock left a race where the exact same deadlock (see the original commit referenced below) can still happen if cfg80211_destroy_ifaces() already runs while nl80211_netlink_notify() is still marking some interfaces as nl_owner_dead. The race happens because we have two loops here - first we dev_close() all the netdevs, and then we destroy them. If we also have two netdevs (first one need only be a wdev though) then we can find one during the first iteration, close it, and go to the second iteration -- but then find two, and try to destroy also the one we didn't close yet. Fix this by only iterating once.
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cfg80211模块中发现竞争条件问题。在cfg80211_destroy_ifaces函数运行时，nl80211_netlink_notify函数仍在标记一些接口为nl_owner_dead。
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 ea6b2098dd02789f68770fd3d5a373732207be2f ~ 241e633cb379c4f332fc1baf2abec95ec840cbeb -
Linux Linux 5.13 -

II. Public POCs for CVE-2022-48784

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III. Intelligence Information for CVE-2022-48784

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Other References for CVE-2022-48784 (3)

Same Patch Batch · Linux · 2024-07-16 · 98 CVEs total

CVE-2022-48851 9.8 CRITICAL staging: gdm724x: fix use after free in gdm_lte_rx()
CVE-2022-48788 9.8 CRITICAL nvme-rdma: fix possible use-after-free in transport error_recovery work
CVE-2022-48789 9.8 CRITICAL nvme-tcp: fix possible use-after-free in transport error_recovery work
CVE-2022-48790 9.8 CRITICAL nvme: fix a possible use-after-free in controller reset during load
CVE-2022-48828 9.1 CRITICAL NFSD: Fix ia_size underflow
CVE-2022-48829 9.1 CRITICAL NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes
CVE-2022-48830 8.8 HIGH can: isotp: fix potential CAN frame reception race in isotp_rcv()
CVE-2022-48864 8.8 HIGH vdpa/mlx5: add validation for VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET command
CVE-2022-48782 8.8 HIGH mctp: fix use after free
CVE-2022-48785 8.8 HIGH ipv6: mcast: use rcu-safe version of ipv6_get_lladdr()
CVE-2022-48792 7.8 HIGH scsi: pm8001: Fix use-after-free for aborted SSP/STP sas_task
CVE-2022-48791 7.8 HIGH scsi: pm8001: Fix use-after-free for aborted TMF sas_task
CVE-2022-48796 7.8 HIGH iommu: Fix potential use-after-free during probe
CVE-2022-48787 7.8 HIGH iwlwifi: fix use-after-free
CVE-2022-48786 7.8 HIGH vsock: remove vsock from connected table when connect is interrupted by a signal
CVE-2022-48847 7.8 HIGH watch_queue: Fix filter limit check
CVE-2022-48821 7.8 HIGH misc: fastrpc: avoid double fput() on failed usercopy
CVE-2022-48779 7.8 HIGH net: mscc: ocelot: fix use-after-free in ocelot_vlan_del()
CVE-2022-48801 7.8 HIGH iio: buffer: Fix file related error handling in IIO_BUFFER_GET_FD_IOCTL
CVE-2022-48822 7.8 HIGH usb: f_fs: Fix use-after-free for epfile

Showing top 20 of 98 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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