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CVE-2024-38575— wifi: brcmfmac: pcie: handle randbuf allocation failure

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 brcmfmac pcie中存在安全问题。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P13

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 15

VendorProduct Version RangeStatus
Linux Linux c35105f375b530bc27e03ea9250b1c26dd4cae86< 0eb2c0528e232b3c32cde9d5e1c9f80ba2996e49 affected
91918ce88d9fef408bb12c46a27c73d79b604c20< c37466406f075476c2702ecc01917928af871f3b affected
91918ce88d9fef408bb12c46a27c73d79b604c20< 7c15eb344b0d4d3468c9b2a7591ad2b859b29b88 affected
91918ce88d9fef408bb12c46a27c73d79b604c20< 3729ca9e48d19a03ae049e2bde510e161c2f3720 affected
91918ce88d9fef408bb12c46a27c73d79b604c20< 316f790ebcf94bdf59f794b7cdea4068dc676d4c affected
ba72baed066f3bfa8b489e4b58f1fcaf51c04f83 affected
6.1.30< 6.1.93 affected
6.3.4< 6.4 affected
… +7 more rows
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I. Basic Information for CVE-2024-38575

Vulnerability Information
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Vulnerability Title
wifi: brcmfmac: pcie: handle randbuf allocation failure
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: pcie: handle randbuf allocation failure The kzalloc() in brcmf_pcie_download_fw_nvram() will return null if the physical memory has run out. As a result, if we use get_random_bytes() to generate random bytes in the randbuf, the null pointer dereference bug will happen. In order to prevent allocation failure, this patch adds a separate function using buffer on kernel stack to generate random bytes in the randbuf, which could prevent the kernel stack from overflow.
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wifi brcmfmac pcie中存在安全问题。
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 c35105f375b530bc27e03ea9250b1c26dd4cae86 ~ 0eb2c0528e232b3c32cde9d5e1c9f80ba2996e49 -
Linux Linux 6.4 -

II. Public POCs for CVE-2024-38575

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III. Intelligence Information for CVE-2024-38575

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Patches & Fixes for CVE-2024-38575 (1)

Other References for CVE-2024-38575 (4)

Same Patch Batch · Linux · 2024-06-19 · 122 CVEs total

CVE-2024-38558 10.0 CRITICAL net: openvswitch: fix overwriting ct original tuple for ICMPv6
CVE-2024-38570 9.8 CRITICAL gfs2: Fix potential glock use-after-free on unmount
CVE-2021-47587 9.8 CRITICAL net: systemport: Add global locking for descriptor lifecycle
CVE-2024-38544 9.8 CRITICAL RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt
CVE-2021-47611 8.1 HIGH mac80211: validate extended element ID is present
CVE-2024-38587 7.8 HIGH speakup: Fix sizeof() vs ARRAY_SIZE() bug
CVE-2024-38556 7.8 HIGH net/mlx5: Add a timeout to acquire the command queue semaphore
CVE-2024-38610 7.8 HIGH drivers/virt/acrn: fix PFNMAP PTE checks in acrn_vm_ram_map()
CVE-2024-38605 7.8 HIGH ALSA: core: Fix NULL module pointer assignment at card init
CVE-2024-38599 7.8 HIGH jffs2: prevent xattr node from overflowing the eraseblock
CVE-2024-38592 7.8 HIGH drm/mediatek: Init `ddp_comp` with devm_kcalloc()
CVE-2024-38564 7.8 HIGH bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE
CVE-2024-38568 7.8 HIGH drivers/perf: hisi: hns3: Fix out-of-bound access when valid event group
CVE-2024-38572 7.8 HIGH wifi: ath12k: fix out-of-bound access of qmi_invoke_handler()
CVE-2024-38578 7.8 HIGH ecryptfs: Fix buffer size for tag 66 packet
CVE-2024-38580 7.8 HIGH epoll: be better about file lifetimes
CVE-2024-38569 7.8 HIGH drivers/perf: hisi_pcie: Fix out-of-bound access when valid event group
CVE-2024-38583 7.8 HIGH nilfs2: fix use-after-free of timer for log writer thread
CVE-2024-38614 7.8 HIGH openrisc: traps: Don't send signals to kernel mode threads
CVE-2024-38588 7.8 HIGH ftrace: Fix possible use-after-free issue in ftrace_location()

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-2024-38575

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