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CVE-2022-49416— wifi: mac80211: fix use-after-free in chanctx code

EPSS 0.01% · P3

Affected Version Matrix 20

VendorProductVersion RangeStatus
LinuxLinux5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f< 88cc8f963febe192d6ded9df7217f92f380b449aaffected
5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f< 4ba81e794f0fad6234f644c2da1ae14d5b95e1c4affected
5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f< 9f1e5cc85ad77e52f54049a94db0407445ae2a34affected
5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f< 265bec4779a38b65e86a25120370f200822dfa76affected
5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f< 6118bbdf69f4718b02d26bbcf2e497eb66004331affected
5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f< b79110f2bf6022e60e590d2e094728a8eec3e79eaffected
5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f< 82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2caffected
5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f< 4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6caffected
… +12 more rows
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I. Basic Information for CVE-2022-49416

Vulnerability Information
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Vulnerability Title
wifi: mac80211: fix use-after-free in chanctx code
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix use-after-free in chanctx code In ieee80211_vif_use_reserved_context(), when we have an old context and the new context's replace_state is set to IEEE80211_CHANCTX_REPLACE_NONE, we free the old context in ieee80211_vif_use_reserved_reassign(). Therefore, we cannot check the old_ctx anymore, so we should set it to NULL after this point. However, since the new_ctx replace state is clearly not IEEE80211_CHANCTX_REPLACES_OTHER, we're not going to do anything else in this function and can just return to avoid accessing the freed old_ctx.
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chanctx代码中的释放后重用。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f ~ 88cc8f963febe192d6ded9df7217f92f380b449a -
LinuxLinux 3.17 -

II. Public POCs for CVE-2022-49416

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III. Intelligence Information for CVE-2022-49416

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Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total

CVE-2022-49498ALSA: pcm: Check for null pointer of pointer substream before dereferencing it
CVE-2022-49486ASoC: fsl: Fix refcount leak in imx_sgtl5000_probe
CVE-2022-49488drm/msm/mdp5: Return error code in mdp5_mixer_release when deadlock is detected
CVE-2022-49489drm/msm/disp/dpu1: set vbif hw config to NULL to avoid use after memory free during pm run
CVE-2022-49490drm/msm/mdp5: Return error code in mdp5_pipe_release when deadlock is detected
CVE-2022-49491drm/rockchip: vop: fix possible null-ptr-deref in vop_bind()
CVE-2022-49492nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags
CVE-2022-49493ASoC: rt5645: Fix errorenous cleanup order
CVE-2022-49494mtd: rawnand: cadence: fix possible null-ptr-deref in cadence_nand_dt_probe()
CVE-2022-49495drm/msm/hdmi: check return value after calling platform_get_resource_byname()
CVE-2022-49497net: remove two BUG() from skb_checksum_help()
CVE-2022-49496media: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko
CVE-2022-49502media: rga: fix possible memory leak in rga_probe
CVE-2022-49507regulator: da9121: Fix uninit-value in da9121_assign_chip_model()
CVE-2022-49508HID: elan: Fix potential double free in elan_input_configured
CVE-2022-49506drm/mediatek: Add vblank register/unregister callback functions
CVE-2022-49504scsi: lpfc: Inhibit aborts if external loopback plug is inserted
CVE-2022-49505NFC: NULL out the dev->rfkill to prevent UAF
CVE-2022-49501usbnet: Run unregister_netdev() before unbind() again
CVE-2022-49500wl1251: dynamically allocate memory used for DMA

Showing top 20 of 706 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-49416

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