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CVE-2024-53049

slub/kunit: fix a WARNING due to unwrapped __kmalloc_cache_noprof

MEDIUM
5.5
CVSS Score
Published: November 19, 2024 at 05:19 PM UTC
Updated: June 17, 2026 at 08:08 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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 ]---

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.11 ≤ v < 6.11.76.11 ≤ v < 6.126.12 rc16.12 rc26.12 rc36.12 rc46.12 rc5a0a44d9175b349df2462089140fb7f292100bd7c
Vendor states this is fixed in 2b059d0d1e624adc6e69a754bc48057f8bf459dc (fixed)
Vendor states this is fixed in 79aea7dfd98fbbf282d1408fc21849fc9a677768 (fixed)
Vendor states this is fixed in 6.11 (unaffected)
Vendor states this is fixed in 6.11.7 (unaffected)
Vendor states this is fixed in 6.12 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/2b059d0d1e624adc6e69a754bc48057f8bf459dc
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/79aea7dfd98fbbf282d1408fc21849fc9a677768

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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