VULNERABILITY INTELLIGENCE

CVE-2026-22991

CVSS score7.5 HIGH
EPSS probability0.47%
CISA KEVNot currently listed
Published2026-01-23
Last modified2026-10-19
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: libceph: make free_choose_arg_map() resilient to partial allocation free_choose_arg_map() may dereference a NULL pointer if its caller fails after a partial allocation. For example, in decode_choose_args(), if allocation of arg_map->args fails, execution jumps to the fail label and free_choose_arg_map() is called. Since arg_map->size is updated to a non-zero value before memory allocation, free_choose_arg_map() will iterate over arg_map->args and dereference a NULL pointer. To prevent this potential NULL pointer dereference and make free_choose_arg_map() more resilient, add checks for pointers before iterating.

Weakness classification

  • nvd@nist.gov: CWE-476
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-476

Primary references