# CVE-2024-53049: linux: In the Linux kernel, the following vulnerability has been resolved:  slub/kunit: fix a WARNING due to unwrapped __kma...

CVE-2024-53049 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-53049, released November 19, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-53049
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 19, 2024

## 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 ]---

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.11.7-1 | [DEBIAN-CVE-2024-53049](https://patchblox.com/security/data/fix/linux/debian-cve-2024-53049.md) | Nov 19, 2024 |
| Linux | linux Debian 14 | 6.11.7-1 | [DEBIAN-CVE-2024-53049](https://patchblox.com/security/data/fix/linux/debian-cve-2024-53049.md) | Nov 19, 2024 |

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