CVE-2024-53049

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> slub/kunit: fix a WARNING due to unwrapped __kmalloc_cache_noprof<br /> <br /> &amp;#39;modprobe slub_kunit&amp;#39; will have a warning as shown below. The root cause<br /> is that __kmalloc_cache_noprof was directly used, which resulted in no<br /> alloc_tag being allocated. This caused current-&gt;alloc_tag to be null,<br /> leading to a warning in alloc_tag_add_check.<br /> <br /> Let&amp;#39;s add an alloc_hook layer to __kmalloc_cache_noprof specifically<br /> within lib/slub_kunit.c, which is the only user of this internal slub<br /> function outside kmalloc implementation itself.<br /> <br /> [58162.947016] WARNING: CPU: 2 PID: 6210 at<br /> ./include/linux/alloc_tag.h:125 alloc_tagging_slab_alloc_hook+0x268/0x27c<br /> [58162.957721] Call trace:<br /> [58162.957919] alloc_tagging_slab_alloc_hook+0x268/0x27c<br /> [58162.958286] __kmalloc_cache_noprof+0x14c/0x344<br /> [58162.958615] test_kmalloc_redzone_access+0x50/0x10c [slub_kunit]<br /> [58162.959045] kunit_try_run_case+0x74/0x184 [kunit]<br /> [58162.959401] kunit_generic_run_threadfn_adapter+0x2c/0x4c [kunit]<br /> [58162.959841] kthread+0x10c/0x118<br /> [58162.960093] ret_from_fork+0x10/0x20<br /> [58162.960363] ---[ end trace 0000000000000000 ]---