CVE-2026-63824

Summary

In the Linux kernel, the following vulnerability has been resolved:

KEYS: fix overflow in keyctl_pkey_params_get_2()

The length for the internal output buffer is calculated incorrectly, which can result overflow when a too small buffer is provided.

Fix the bug by allocating internal output with the size of the maximum length of the cryptographic primitive instead of caller provided size.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux00d60fd3b93219ea854220f0fd264b86398cbc53 < 622ec2dcd59f21623f2a7ab773c80ceb7d555e3aaffected
LinuxLinux00d60fd3b93219ea854220f0fd264b86398cbc53 < b1e247338bc71826a2d2def3e0874c34749df69aaffected
LinuxLinux00d60fd3b93219ea854220f0fd264b86398cbc53 < 0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3affected
LinuxLinux00d60fd3b93219ea854220f0fd264b86398cbc53 < 5966e4e2ba213ab7ad559166152eb4f1f170dd2caffected
LinuxLinux00d60fd3b93219ea854220f0fd264b86398cbc53 < 5165f1cc727f1322456735df212d8e26ec237a8daffected
LinuxLinux00d60fd3b93219ea854220f0fd264b86398cbc53 < b11c1fa32667692a2c0566e10163758e786e430caffected
LinuxLinux00d60fd3b93219ea854220f0fd264b86398cbc53 < 670fc6a311ed321522b7fff92cf0fc376b4f6e78affected
LinuxLinux00d60fd3b93219ea854220f0fd264b86398cbc53 < cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0baffected
LinuxLinux4.20affected
LinuxLinux0 < 4.20unaffected
LinuxLinux5.10.260 <= 5.10.*unaffected
LinuxLinux5.15.211 <= 5.15.*unaffected
LinuxLinux6.1.177 <= 6.1.*unaffected
LinuxLinux6.6.144 <= 6.6.*unaffected
LinuxLinux6.12.95 <= 6.12.*unaffected
LinuxLinux6.18.38 <= 6.18.*unaffected
LinuxLinux7.1.3 <= 7.1.*unaffected
LinuxLinux7.2-rc1 <= *unaffected

Weaknesses

References