CVE-2024-53128

/// Technical description

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

sched/task_stack: fix object_is_on_stack() for KASAN tagged pointers

When CONFIG_KASAN_SW_TAGS and CONFIG_KASAN_STACK are enabled, the

object_is_on_stack() function may produce incorrect results due to the

presence of tags in the obj pointer, while the stack pointer does not have

tags. This discrepancy can lead to incorrect stack object detection and

subsequently trigger warnings if CONFIG_DEBUG_OBJECTS is also enabled.

Example of the warning:

ODEBUG: object 3eff800082ea7bb0 is NOT on stack ffff800082ea0000, but annotated.

------------[ cut here ]------------

WARNING: CPU: 0 PID: 1 at lib/debugobjects.c:557 __debug_object_init+0x330/0x364

Modules linked in:

CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.0-rc5 #4

Hardware name: linux,dummy-virt (DT)

pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)

pc : __debug_object_init+0x330/0x364

lr : __debug_object_init+0x330/0x364

sp : ffff800082ea7b40

x

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References