CVE-2024-38575

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc35105f375b530bc27e03ea9250b1c26dd4cae86 < 0eb2c0528e232b3c32cde9d5e1c9f80ba2996e49affected
LinuxLinux91918ce88d9fef408bb12c46a27c73d79b604c20 < c37466406f075476c2702ecc01917928af871f3baffected
LinuxLinux91918ce88d9fef408bb12c46a27c73d79b604c20 < 7c15eb344b0d4d3468c9b2a7591ad2b859b29b88affected
LinuxLinux91918ce88d9fef408bb12c46a27c73d79b604c20 < 3729ca9e48d19a03ae049e2bde510e161c2f3720affected
LinuxLinux91918ce88d9fef408bb12c46a27c73d79b604c20 < 316f790ebcf94bdf59f794b7cdea4068dc676d4caffected
LinuxLinuxba72baed066f3bfa8b489e4b58f1fcaf51c04f83affected
LinuxLinux6.1.30 < 6.1.93affected
LinuxLinux6.3.4 < 6.4affected
LinuxLinux6.4affected
LinuxLinux0 < 6.4unaffected
LinuxLinux6.1.93 <= 6.1.*unaffected
LinuxLinux6.6.33 <= 6.6.*unaffected
LinuxLinux6.8.12 <= 6.8.*unaffected
LinuxLinux6.9.3 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References