vulnerability

Ubuntu: (Multiple Advisories) (CVE-2024-53049): Linux kernel vulnerabilities

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Nov 19, 2024
Added
Feb 20, 2025
Modified
Mar 3, 2025

Description

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

slub/kunit: fix a WARNING due to unwrapped __kmalloc_cache_noprof

'modprobe slub_kunit' will have a warning as shown below. The root cause
is that __kmalloc_cache_noprof was directly used, which resulted in no
alloc_tag being allocated. This caused current->alloc_tag to be null,
leading to a warning in alloc_tag_add_check.

Let's add an alloc_hook layer to __kmalloc_cache_noprof specifically
within lib/slub_kunit.c, which is the only user of this internal slub
function outside kmalloc implementation itself.

[58162.947016] WARNING: CPU: 2 PID: 6210 at
./include/linux/alloc_tag.h:125 alloc_tagging_slab_alloc_hook+0x268/0x27c
[58162.957721] Call trace:
[58162.957919] alloc_tagging_slab_alloc_hook+0x268/0x27c
[58162.958286] __kmalloc_cache_noprof+0x14c/0x344
[58162.958615] test_kmalloc_redzone_access+0x50/0x10c [slub_kunit]
[58162.959045] kunit_try_run_case+0x74/0x184 [kunit]
[58162.959401] kunit_generic_run_threadfn_adapter+0x2c/0x4c [kunit]
[58162.959841] kthread+0x10c/0x118
[58162.960093] ret_from_fork+0x10/0x20
[58162.960363] ---[ end trace 0000000000000000 ]---

Solutions

ubuntu-upgrade-linux-image-6-11-0-1005-realtimeubuntu-upgrade-linux-image-6-11-0-1008-raspiubuntu-upgrade-linux-image-6-11-0-1009-awsubuntu-upgrade-linux-image-6-11-0-1009-azureubuntu-upgrade-linux-image-6-11-0-1009-azure-fdeubuntu-upgrade-linux-image-6-11-0-1009-gcpubuntu-upgrade-linux-image-6-11-0-1010-lowlatencyubuntu-upgrade-linux-image-6-11-0-1010-lowlatency-64kubuntu-upgrade-linux-image-6-11-0-1011-oracleubuntu-upgrade-linux-image-6-11-0-1011-oracle-64kubuntu-upgrade-linux-image-6-11-0-1015-oemubuntu-upgrade-linux-image-6-11-0-18-genericubuntu-upgrade-linux-image-6-11-0-18-generic-64kubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-fdeubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-24-04ubuntu-upgrade-linux-image-generic-hwe-24-04ubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-64kubuntu-upgrade-linux-image-oem-24-04ubuntu-upgrade-linux-image-oem-24-04aubuntu-upgrade-linux-image-oem-24-04bubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-64kubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-realtimeubuntu-upgrade-linux-image-realtime-hwe-24-04ubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-24-04
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