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CVE-2023-53715— wifi: brcmfmac: cfg80211: Pass the PMK in binary instead of hex

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，该漏洞源于未初始化堆栈内容泄露到设备，可能导致凭据泄露。

AI Predicted 5.3 Difficulty: Hard EPSS 0.21% · P11

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux b8a64f0e96c2b258321ee03975aeb0f5e88a055b< 1687845eb8f37360a9ee849a3587ab659b090773 affected
b8a64f0e96c2b258321ee03975aeb0f5e88a055b< 2bc34facb90ceeff6f8c17d2006575a6d07c3825 affected
b8a64f0e96c2b258321ee03975aeb0f5e88a055b< 56c7e9c39bd54fd753c0c4b1ed10278cbd3a5f02 affected
b8a64f0e96c2b258321ee03975aeb0f5e88a055b< 4e8dc0e5c7636efaadbd7e488acd34b4291c0431 affected
b8a64f0e96c2b258321ee03975aeb0f5e88a055b< e242c66f7ecfe8f5b6eb308f4ea464fd8589c866 affected
b8a64f0e96c2b258321ee03975aeb0f5e88a055b< f8a6c53ff1d91acd5a20eb627edbffd816eb9a4e affected
b8a64f0e96c2b258321ee03975aeb0f5e88a055b< 2fa3a5226b05e0a797c68b9609dcebe0cd236b27 affected
b8a64f0e96c2b258321ee03975aeb0f5e88a055b< 89b89e52153fda2733562776c7c9d9d3ebf8dd6d affected
… +10 more rows
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I. Basic Information for CVE-2023-53715

Vulnerability Information
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Vulnerability Title
wifi: brcmfmac: cfg80211: Pass the PMK in binary instead of hex
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: cfg80211: Pass the PMK in binary instead of hex Apparently the hex passphrase mechanism does not work on newer chips/firmware (e.g. BCM4387). It seems there was a simple way of passing it in binary all along, so use that and avoid the hexification. OpenBSD has been doing it like this from the beginning, so this should work on all chips. Also clear the structure before setting the PMK. This was leaking uninitialized stack contents to the device.
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，该漏洞源于未初始化堆栈内容泄露到设备，可能导致凭据泄露。
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 b8a64f0e96c2b258321ee03975aeb0f5e88a055b ~ 1687845eb8f37360a9ee849a3587ab659b090773 -
Linux Linux 4.13 -

II. Public POCs for CVE-2023-53715

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III. Intelligence Information for CVE-2023-53715

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Same Patch Batch · Linux · 2025-10-22 · 67 CVEs total

CVE-2023-53711 8.2 HIGH NFS: Fix a potential data corruption
CVE-2023-53705 8.2 HIGH ipv6: Fix out-of-bounds access in ipv6_find_tlv()
CVE-2023-53713 7.8 HIGH arm64: sme: Use STR P to clear FFR context field in streaming SVE mode
CVE-2022-50581 7.8 HIGH hfs: fix OOB Read in __hfs_brec_find
CVE-2023-53718 7.8 HIGH ring-buffer: Do not swap cpu_buffer during resize process
CVE-2022-50569 7.8 HIGH xfrm: Update ipcomp_scratches with NULL when freed
CVE-2022-50570 7.8 HIGH platform/chrome: fix memory corruption in ioctl
CVE-2022-50567 7.8 HIGH fs: jfs: fix shift-out-of-bounds in dbAllocAG
CVE-2023-53707 7.8 HIGH drm/amdgpu: Fix integer overflow in amdgpu_cs_pass1
CVE-2023-53692 7.8 HIGH ext4: fix use-after-free read in ext4_find_extent for bigalloc + inline
CVE-2023-53729 7.8 HIGH soc: qcom: qmi_encdec: Restrict string length in decode
CVE-2023-53698 7.8 HIGH xsk: fix refcount underflow in error path
CVE-2023-53695 7.8 HIGH udf: Detect system inodes linked into directory hierarchy
CVE-2023-53726 7.1 HIGH arm64: csum: Fix OoB access in IP checksum code for negative lengths
CVE-2023-53719 serial: arc_uart: fix of_iomap leak in `arc_serial_probe`
CVE-2023-53708 ACPI: x86: s2idle: Catch multiple ACPI_TYPE_PACKAGE objects
CVE-2023-53704 clk: imx: clk-imx8mp: improve error handling in imx8mp_clocks_probe()
CVE-2023-53712 ARM: 9317/1: kexec: Make smp stop calls asynchronous
CVE-2023-53702 s390/crypto: use vector instructions only if available for ChaCha20
CVE-2023-53710 wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read

Showing top 20 of 67 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53715

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