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CVE-2021-47184— i40e: Fix NULL ptr dereference on VSI filter sync

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，该漏洞源于存在空指针取消引用漏洞。

CVSS 8.8 · High EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1055.004 · Asynchronous Procedure Call

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 41c445ff0f482bb6e6b72dcee9e598e20575f743< 78f2a9e831f9610e3655a0be5e675e1aa2472089 affected
41c445ff0f482bb6e6b72dcee9e598e20575f743< 87c421ab4a43433cb009fea44bbbc77f46913e1d affected
41c445ff0f482bb6e6b72dcee9e598e20575f743< c30162da91327e4cdf7cd03079f096bb3654738c affected
41c445ff0f482bb6e6b72dcee9e598e20575f743< f866513ead4370402428ef724b03c3312295c178 affected
41c445ff0f482bb6e6b72dcee9e598e20575f743< e91e8427a1e1633a0261e3bb0201c836ac5b3890 affected
41c445ff0f482bb6e6b72dcee9e598e20575f743< 37d9e304acd903a445df8208b8a13d707902dea6 affected
3.12 affected
< 3.12 unaffected
… +6 more rows
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I. Basic Information for CVE-2021-47184

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
i40e: Fix NULL ptr dereference on VSI filter sync
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: i40e: Fix NULL ptr dereference on VSI filter sync Remove the reason of null pointer dereference in sync VSI filters. Added new I40E_VSI_RELEASING flag to signalize deleting and releasing of VSI resources to sync this thread with sync filters subtask. Without this patch it is possible to start update the VSI filter list after VSI is removed, that's causing a kernel oops.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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，该漏洞源于存在空指针取消引用漏洞。
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 41c445ff0f482bb6e6b72dcee9e598e20575f743 ~ 78f2a9e831f9610e3655a0be5e675e1aa2472089 -
Linux Linux 3.12 -

II. Public POCs for CVE-2021-47184

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III. Intelligence Information for CVE-2021-47184

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Other References for CVE-2021-47184 (5)

Same Patch Batch · Linux · 2024-04-10 · 39 CVEs total

CVE-2021-47215 9.8 CRITICAL net/mlx5e: kTLS, Fix crash in RX resync flow
CVE-2021-47203 8.8 HIGH scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()
CVE-2021-47183 8.8 HIGH scsi: lpfc: Fix link down processing to address NULL pointer dereference
CVE-2021-47189 7.8 HIGH btrfs: fix memory ordering between normal and ordered work functions
CVE-2021-47197 7.8 HIGH net/mlx5e: nullify cq->dbg pointer in mlx5_debug_cq_remove()
CVE-2021-47196 7.8 HIGH RDMA/core: Set send and receive CQ before forwarding to the driver
CVE-2021-47209 7.8 HIGH sched/fair: Prevent dead task groups from regaining cfs_rq's
CVE-2021-47194 7.8 HIGH cfg80211: call cfg80211_stop_ap when switch from P2P_GO type
CVE-2024-26815 7.8 HIGH net/sched: taprio: proper TCA_TAPRIO_TC_ENTRY_INDEX check
CVE-2021-47200 7.8 HIGH drm/prime: Fix use after free in mmap with drm_gem_ttm_mmap
CVE-2021-47188 7.8 HIGH scsi: ufs: core: Improve SCSI abort handling
CVE-2021-47201 7.8 HIGH iavf: free q_vectors before queues in iavf_disable_vf
CVE-2021-47191 7.1 HIGH scsi: scsi_debug: Fix out-of-bound read in resp_readcap16()
CVE-2021-47219 7.1 HIGH scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs()
CVE-2021-47205 clk: sunxi-ng: Unregister clocks/resets when unbinding
CVE-2021-47207 ALSA: gus: fix null pointer dereference on pointer block
CVE-2021-47206 usb: host: ohci-tmio: check return value after calling platform_get_resource()
CVE-2021-47199 net/mlx5e: CT, Fix multiple allocations and memleak of mod acts
CVE-2021-47210 usb: typec: tipd: Remove WARN_ON in tps6598x_block_read
CVE-2021-47211 ALSA: usb-audio: fix null pointer dereference on pointer cs_desc

Showing top 20 of 39 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47184

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