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CVE-2024-40929— wifi: iwlwifi: mvm: check n_ssids before accessing the ssids

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 wifi:iwlwifi:mvm 组件在处理 n_ssids 为 0 时未能正确检查，可能导致越界访问。

CVSS 7.1 · High EPSS 0.36% · P29

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux c1a7515393e403758a684fd0a2372af466675b15< 3c4771091ea8016c8601399078916f722dd8833b affected
c1a7515393e403758a684fd0a2372af466675b15< f777792952d03bbaf8329fdfa99393a5a33e2640 affected
c1a7515393e403758a684fd0a2372af466675b15< 9e719ae3abad60e245ce248ba3f08148f375a614 affected
c1a7515393e403758a684fd0a2372af466675b15< 29a18d56bd64b95bd10bda4afda512558471382a affected
c1a7515393e403758a684fd0a2372af466675b15< 62e007bdeb91c6879a4652c3426aef1cd9d2937b affected
c1a7515393e403758a684fd0a2372af466675b15< 60d62757df30b74bf397a2847a6db7385c6ee281 affected
4.17 affected
< 4.17 unaffected
… +6 more rows
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I. Basic Information for CVE-2024-40929

Vulnerability Information
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Vulnerability Title
wifi: iwlwifi: mvm: check n_ssids before accessing the ssids
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: check n_ssids before accessing the ssids In some versions of cfg80211, the ssids poinet might be a valid one even though n_ssids is 0. Accessing the pointer in this case will cuase an out-of-bound access. Fix this by checking n_ssids first.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 wifi:iwlwifi:mvm 组件在处理 n_ssids 为 0 时未能正确检查，可能导致越界访问。
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 c1a7515393e403758a684fd0a2372af466675b15 ~ 3c4771091ea8016c8601399078916f722dd8833b -
Linux Linux 4.17 -

II. Public POCs for CVE-2024-40929

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III. Intelligence Information for CVE-2024-40929

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Other References for CVE-2024-40929 (6)

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

CVE-2024-40999 9.8 CRITICAL net: ena: Add validation for completion descriptors consistency
CVE-2024-40907 9.8 CRITICAL ionic: fix kernel panic in XDP_TX action
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-2024-40937 9.8 CRITICAL gve: Clear napi->skb before dev_kfree_skb_any()
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-2024-40954 7.8 HIGH net: do not leave a dangling sk pointer, when socket creation fails
CVE-2024-40918 7.8 HIGH parisc: Try to fix random segmentation faults in package builds
CVE-2024-40924 7.8 HIGH drm/i915/dpt: Make DPT object unshrinkable
CVE-2024-40925 7.8 HIGH block: fix request.queuelist usage in flush
CVE-2024-40943 7.8 HIGH ocfs2: fix races between hole punching and AIO+DIO
CVE-2024-40947 7.8 HIGH ima: Avoid blocking in RCU read-side critical section
CVE-2024-40949 7.8 HIGH mm: shmem: fix getting incorrect lruvec when replacing a shmem folio
CVE-2024-40990 7.8 HIGH RDMA/mlx5: Add check for srq max_sge attribute
CVE-2024-40986 7.8 HIGH dmaengine: xilinx: xdma: Fix data synchronisation in xdma_channel_isr()
CVE-2024-40989 7.8 HIGH KVM: arm64: Disassociate vcpus from redistributor region on teardown
CVE-2024-40984 7.8 HIGH ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine."

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-2024-40929

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