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CVE-2023-53153— wifi: cfg80211: Fix use after free for wext

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，该漏洞源于未重置wext.connect中的关键信息，可能导致释放后重用。

AI Predicted 6.9 Difficulty: Moderate EPSS 0.16% · P5

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux fffd0934b9390f34bec45762192b7edd3b12b4b5< 66af4a2ab1d65d556d638cb9555a3b823c2557a9 affected
fffd0934b9390f34bec45762192b7edd3b12b4b5< a2a92b3e9d8e03ee3f9ee407fc46a9b4bd02d8b6 affected
fffd0934b9390f34bec45762192b7edd3b12b4b5< 6f1959c17d4cb5b74af6fc31dc787e1dc3e4f6e2 affected
fffd0934b9390f34bec45762192b7edd3b12b4b5< 2cfe78619b0de6d2da773978bc2d22797212eaa7 affected
fffd0934b9390f34bec45762192b7edd3b12b4b5< fd081afd21eb35b968b0330700c43ec94986e1c4 affected
fffd0934b9390f34bec45762192b7edd3b12b4b5< 22dfb21bf1cd876616d45cda1bc6daa89eec6747 affected
fffd0934b9390f34bec45762192b7edd3b12b4b5< f4b6a138efb8a32507b8946104e32cb926308da7 affected
fffd0934b9390f34bec45762192b7edd3b12b4b5< 015b8cc5e7c4d7bb671f1984d7b7338c310b185b affected
… +10 more rows
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I. Basic Information for CVE-2023-53153

Vulnerability Information
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Vulnerability Title
wifi: cfg80211: Fix use after free for wext
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: Fix use after free for wext Key information in wext.connect is not reset on (re)connect and can hold data from a previous connection. Reset key data to avoid that drivers or mac80211 incorrectly detect a WEP connection request and access the freed or already reused memory. Additionally optimize cfg80211_sme_connect() and avoid an useless schedule of conn_work.
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，该漏洞源于未重置wext.connect中的关键信息，可能导致释放后重用。
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 fffd0934b9390f34bec45762192b7edd3b12b4b5 ~ 66af4a2ab1d65d556d638cb9555a3b823c2557a9 -
Linux Linux 2.6.32 -

II. Public POCs for CVE-2023-53153

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III. Intelligence Information for CVE-2023-53153

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Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total

CVE-2022-50235 9.8 CRITICAL NFSD: Protect against send buffer overflow in NFSv2 READDIR
CVE-2022-50335 9.8 CRITICAL 9p: set req refcount to zero to avoid uninitialized usage
CVE-2023-53192 9.8 CRITICAL vxlan: Fix nexthop hash size
CVE-2023-53253 8.8 HIGH HID: nvidia-shield: Reference hid_device devm allocation of input_dev name
CVE-2023-53226 8.8 HIGH wifi: mwifiex: Fix OOB and integer underflow when rx packets
CVE-2022-50241 8.8 HIGH NFSD: fix use-after-free on source server when doing inter-server copy
CVE-2023-53194 8.4 HIGH fs/ntfs3: Add length check in indx_get_root
CVE-2023-53213 8.1 HIGH wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()
CVE-2023-53186 8.1 HIGH skbuff: Fix a race between coalescing and releasing SKBs
CVE-2022-50303 7.8 HIGH drm/amdkfd: Fix double release compute pasid
CVE-2023-53254 7.8 HIGH cacheinfo: Fix shared_cpu_map to handle shared caches at different levels
CVE-2023-53170 7.8 HIGH net: dsa: Removed unneeded of_node_put in felix_parse_ports_node
CVE-2023-53252 7.8 HIGH Bluetooth: use RCU for hci_conn_params and iterate safely in hci_sync
CVE-2023-53176 7.8 HIGH serial: 8250: Reinit port->pm on port specific driver unbind
CVE-2023-53178 7.8 HIGH mm: fix zswap writeback race condition
CVE-2023-53179 7.8 HIGH netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
CVE-2023-53184 7.8 HIGH arm64/sme: Set new vector length before reallocating
CVE-2022-50315 7.8 HIGH ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS
CVE-2023-53189 7.8 HIGH ipv6/addrconf: fix a potential refcount underflow for idev
CVE-2023-53216 7.8 HIGH arm64: efi: Make efi_rt_lock a raw_spinlock

Showing top 20 of 210 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53153

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