Type conversion in Linux kernel - CVE-2026-72047
Published: August 16, 2026
Vulnerability identifier: #VU143553
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72047
CWE-ID: CWE-704
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper pointer size handling in the ca8210 debugfs test interface when exchanging kmalloc'd buffer pointers through a kfifo on 64-bit systems. A local user can interact with the debugfs test interface to cause a denial of service.
Only 64-bit builds with CONFIG_IEEE802154_CA8210_DEBUGFS enabled are vulnerable.
Affected software
Linux kernel
How to mitigate CVE-2026-72047
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/093aacb0c56d5c693e3169a0224062e77c3fd0c0
- https://git.kernel.org/stable/c/1fe2643d0b24ca3cdd61a31a45c2d3233dc6cbfe
- https://git.kernel.org/stable/c/2059c28bd725beded01277cdf1f67be33e714323
- https://git.kernel.org/stable/c/2c1664ccfae653979b38788211240b5a1ee317ed
- https://git.kernel.org/stable/c/65dc342274a01616f5c17105f7360a3b4bfd7a3d
- https://git.kernel.org/stable/c/6d7f7bcf225b2d566176bf6229dbd1252940cb3c
- https://git.kernel.org/stable/c/87dab14a4f68895d6f4d798e6ee3556cd64e8c72
- https://git.kernel.org/stable/c/d8ce67fa6a5e6929f5414e933ff9665176c2bce6