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CVE-2022-49098— Drivers: hv: vmbus: Fix potential crash on module unload

AI Predicted 3.3 Difficulty: Trivial EPSS 0.24% · P15

Possible ATT&CK Techniques 1AI

T1562

Affected Version Matrix 20

VendorProductVersion RangeStatus
LinuxLinux5e059fc0f054309036d3f612bc8b0a502ca58545< 6b4c0149a56147b29169e07000d566162892722aaffected
9f38f7b46de0747c1909e8c557aa21715dce20c5< 2133c422a103cf7c7768c37b9ac382e73b691892affected
74347a99e73ae00b8385f1209aaea193c670f901< cf580d2e3884dbafd6b90269b03a24d661578624affected
74347a99e73ae00b8385f1209aaea193c670f901< dcd6b1a624c0ffa21034d8b1e02e9d068458f596affected
74347a99e73ae00b8385f1209aaea193c670f901< 5ea98d0f5f035c1bcf1517ccec0e024ae35a48b2affected
74347a99e73ae00b8385f1209aaea193c670f901< 3d0078f8bddd58d9bb1ad40bbe929f8633abb276affected
74347a99e73ae00b8385f1209aaea193c670f901< 792f232d57ff28bbd5f9c4abe0466b23d5879dc8affected
caeeb3787167c884b955404a7e669fd77f267e44affected
… +12 more rows
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I. Basic Information for CVE-2022-49098

Vulnerability Information
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Vulnerability Title
Drivers: hv: vmbus: Fix potential crash on module unload
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Fix potential crash on module unload The vmbus driver relies on the panic notifier infrastructure to perform some operations when a panic event is detected. Since vmbus can be built as module, it is required that the driver handles both registering and unregistering such panic notifier callback. After commit 74347a99e73a ("x86/Hyper-V: Unload vmbus channel in hv panic callback") though, the panic notifier registration is done unconditionally in the module initialization routine whereas the unregistering procedure is conditionally guarded and executes only if HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE capability is set. This patch fixes that by unconditionally unregistering the panic notifier in the module's exit routine as well.
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vmbus驱动在模块卸载时未正确注销panic通知器，可能导致崩溃。
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 5e059fc0f054309036d3f612bc8b0a502ca58545 ~ 6b4c0149a56147b29169e07000d566162892722a -
LinuxLinux 5.7 -

II. Public POCs for CVE-2022-49098

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III. Intelligence Information for CVE-2022-49098

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Patches & Fixes for CVE-2022-49098 (7)

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-2022-49098

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