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CVE-2022-49934— wifi: mac80211: Fix UAF in ieee80211_scan_rx()

AI Predicted 4.4 Difficulty: Moderate EPSS 0.06% · P20

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux6ea0a69ca21bbddab5b3979c2190013b0263e749< 6eb181a64fdabf10be9e54de728876667da20255affected
6ea0a69ca21bbddab5b3979c2190013b0263e749< e0ff39448cea654843744c72c6780293c5082cb1affected
6ea0a69ca21bbddab5b3979c2190013b0263e749< 78a07732fbb0934d14827d8f09b9aa6a49ee1aa9affected
6ea0a69ca21bbddab5b3979c2190013b0263e749< 9ad48cbf8b07f10c1e4a7a262b32a9179ae9dd2daffected
6ea0a69ca21bbddab5b3979c2190013b0263e749< 4abc8c07a065ecf771827bde3c63fbbe4aa0c08baffected
6ea0a69ca21bbddab5b3979c2190013b0263e749< 5d20c6f932f2758078d0454729129c894fe353e7affected
6ea0a69ca21bbddab5b3979c2190013b0263e749< c0445feb80a4d0854898118fa01073701f8d356baffected
6ea0a69ca21bbddab5b3979c2190013b0263e749< 60deb9f10eec5c6a20252ed36238b55d8b614a2caffected
… +10 more rows
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I. Basic Information for CVE-2022-49934

Vulnerability Information
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Vulnerability Title
wifi: mac80211: Fix UAF in ieee80211_scan_rx()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Fix UAF in ieee80211_scan_rx() ieee80211_scan_rx() tries to access scan_req->flags after a null check, but a UAF is observed when the scan is completed and __ieee80211_scan_completed() executes, which then calls cfg80211_scan_done() leading to the freeing of scan_req. Since scan_req is rcu_dereference()'d, prevent the racing in __ieee80211_scan_completed() by ensuring that from mac80211's POV it is no longer accessed from an RCU read critical section before we call cfg80211_scan_done().
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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ieee80211_scan_rx函数中存在释放后重用问题。
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 6ea0a69ca21bbddab5b3979c2190013b0263e749 ~ 6eb181a64fdabf10be9e54de728876667da20255 -
LinuxLinux 3.19 -

II. Public POCs for CVE-2022-49934

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III. Intelligence Information for CVE-2022-49934

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Same Patch Batch · Linux · 2025-06-18 · 362 CVEs total

CVE-2022-50104powerpc/xive: Fix refcount leak in xive_get_max_prio
CVE-2022-50116tty: n_gsm: fix deadlock and link starvation in outgoing data path
CVE-2022-50114net: 9p: fix refcount leak in p9_read_work() error handling
CVE-2022-50113ASoc: audio-graph-card2: Fix refcount leak bug in __graph_get_type()
CVE-2022-50112rpmsg: qcom_smd: Fix refcount leak in qcom_smd_parse_edge
CVE-2022-50111ASoC: mt6359: Fix refcount leak bug
CVE-2022-50110watchdog: sp5100_tco: Fix a memory leak of EFCH MMIO resource
CVE-2022-50109video: fbdev: amba-clcd: Fix refcount leak bugs
CVE-2022-50108mfd: max77620: Fix refcount leak in max77620_initialise_fps
CVE-2022-50106powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address
CVE-2022-50107cifs: Fix memory leak when using fscache
CVE-2022-50105powerpc/spufs: Fix refcount leak in spufs_init_isolated_loader
CVE-2022-50099video: fbdev: arkfb: Check the size of screen before memset_io()
CVE-2022-50095posix-cpu-timers: Cleanup CPU timers before freeing them during exec
CVE-2022-50094spmi: trace: fix stack-out-of-bound access in SPMI tracing functions
CVE-2022-50096x86/kprobes: Update kcb status flag after singlestepping
CVE-2022-50097video: fbdev: s3fb: Check the size of screen before memset_io()
CVE-2022-50098scsi: qla2xxx: Fix crash due to stale SRB access around I/O timeouts
CVE-2022-50101video: fbdev: vt8623fb: Check the size of screen before memset_io()
CVE-2022-50103sched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed

Showing top 20 of 362 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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