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CVE-2024-40970— Avoid hw_desc array overrun in dw-axi-dmac

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 dw-axi-dmac 组件在处理 DMA 通道描述符时可能发生数组越界。

CVSS 7.8 · High EPSS 0.30% · P22

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux ef6fb2d6f1abd56cc067c694253ea362159b5ac3< 7c3bb96a20cd8db3b8824b2ff08b6cde4505c7e5 affected
ef6fb2d6f1abd56cc067c694253ea362159b5ac3< dd42570018f5962c10f215ad9c21274ed5d3541e affected
ef6fb2d6f1abd56cc067c694253ea362159b5ac3< e151ae1ee065cf4b8ce4394ddb9d9c8df6370c66 affected
ef6fb2d6f1abd56cc067c694253ea362159b5ac3< 9004784e8d68bcd1ac1376407ba296fa28f04dbe affected
ef6fb2d6f1abd56cc067c694253ea362159b5ac3< 333e11bf47fa8d477db90e2900b1ed3c9ae9b697 affected
5.12 affected
< 5.12 unaffected
5.15.162≤ 5.15.* unaffected
… +4 more rows
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I. Basic Information for CVE-2024-40970

Vulnerability Information
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Vulnerability Title
Avoid hw_desc array overrun in dw-axi-dmac
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Avoid hw_desc array overrun in dw-axi-dmac I have a use case where nr_buffers = 3 and in which each descriptor is composed by 3 segments, resulting in the DMA channel descs_allocated to be 9. Since axi_desc_put() handles the hw_desc considering the descs_allocated, this scenario would result in a kernel panic (hw_desc array will be overrun). To fix this, the proposal is to add a new member to the axi_dma_desc structure, where we keep the number of allocated hw_descs (axi_desc_alloc()) and use it in axi_desc_put() to handle the hw_desc array correctly. Additionally I propose to remove the axi_chan_start_first_queued() call after completing the transfer, since it was identified that unbalance can occur (started descriptors can be interrupted and transfer ignored due to DMA channel not being enabled).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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 dw-axi-dmac 组件在处理 DMA 通道描述符时可能发生数组越界。
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 ef6fb2d6f1abd56cc067c694253ea362159b5ac3 ~ 7c3bb96a20cd8db3b8824b2ff08b6cde4505c7e5 -
Linux Linux 5.12 -

II. Public POCs for CVE-2024-40970

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III. Intelligence Information for CVE-2024-40970

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Patches & Fixes for CVE-2024-40970 (1)

Other References for CVE-2024-40970 (4)

Same Patch Batch · Linux · 2024-07-12 · 122 CVEs total

CVE-2024-40937 9.8 CRITICAL gve: Clear napi->skb before dev_kfree_skb_any()
CVE-2024-40907 9.8 CRITICAL ionic: fix kernel panic in XDP_TX action
CVE-2024-40999 9.8 CRITICAL net: ena: Add validation for completion descriptors consistency
CVE-2024-40923 9.8 CRITICAL vmxnet3: disable rx data ring on dma allocation failure
CVE-2024-40983 9.8 CRITICAL tipc: force a dst refcount before doing decryption
CVE-2024-40910 8.8 HIGH ax25: Fix refcount imbalance on inbound connections
CVE-2024-40911 8.8 HIGH wifi: cfg80211: Lock wiphy in cfg80211_get_station
CVE-2024-40941 8.1 HIGH wifi: iwlwifi: mvm: don't read past the mfuart notifcation
CVE-2024-40953 7.9 HIGH KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin()
CVE-2024-40947 7.8 HIGH ima: Avoid blocking in RCU read-side critical section
CVE-2024-39495 7.8 HIGH greybus: Fix use-after-free bug in gb_interface_release due to race condition.
CVE-2024-40909 7.8 HIGH bpf: Fix a potential use-after-free in bpf_link_free()
CVE-2024-40949 7.8 HIGH mm: shmem: fix getting incorrect lruvec when replacing a shmem folio
CVE-2024-40991 7.8 HIGH dmaengine: ti: k3-udma-glue: Fix of_k3_udma_glue_parse_chn_by_id()
CVE-2024-40990 7.8 HIGH RDMA/mlx5: Add check for srq max_sge attribute
CVE-2024-40979 7.8 HIGH wifi: ath12k: fix kernel crash during resume
CVE-2024-40984 7.8 HIGH ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine."
CVE-2024-40924 7.8 HIGH drm/i915/dpt: Make DPT object unshrinkable
CVE-2024-40986 7.8 HIGH dmaengine: xilinx: xdma: Fix data synchronisation in xdma_channel_isr()
CVE-2024-40925 7.8 HIGH block: fix request.queuelist usage in flush

Showing top 20 of 122 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-40970

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