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high7.5

CVE-2026-22991

In the Linux kernel, the following vulnerability has been resolved: libceph: make free_choose_arg_map() resilient to partial allocation free_choose_arg_map() m…

Impact

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.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 4.13 before 5.10.248
from 5.11 before 5.15.198
from 5.16 before 6.1.161
from 6.2 before 6.6.121
from 6.7 before 6.12.66
from 6.13 before 6.18.6

Weakness classification

CWE-476

References