CVE-2024-53175

Technical Description

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

ipc: fix memleak if msg_init_ns failed in create_ipc_ns

Percpu memory allocation may failed during create_ipc_ns however this

fail is not handled properly since ipc sysctls and mq sysctls is not

released properly. Fix this by release these two resource when failure.

Here is the kmemleak stack when percpu failed:

unreferenced object 0xffff88819de2a600 (size 512):

comm "shmem_2nstest", pid 120711, jiffies 4300542254

hex dump (first 32 bytes):

60 aa 9d 84 ff ff ff ff fc 18 48 b2 84 88 ff ff `.........H.....

04 00 00 00 a4 01 00 00 20 e4 56 81 ff ff ff ff ........ .V.....

backtrace (crc be7cba35):

[<ffffffff81b43f83>] __kmalloc_node_track_caller_noprof+0x333/0x420

[<ffffffff81a52e56>] kmemdup_noprof+0x26/0x50

[<ffffffff821b2f37>] setup_mq_sysctls+0x57/0x1d0

[<ffffffff821b29cc>] copy_ipcs+0x29c/0x3b0

[<ffffffff815d6a10>] create_new_namespaces+0x1d0/0x920

[<ffffffff815d7449>] copy_

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

References