{"id":"CVE-2024-53049","summary":"slub/kunit: fix a WARNING due to unwrapped __kmalloc_cache_noprof","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nslub/kunit: fix a WARNING due to unwrapped __kmalloc_cache_noprof\n\n'modprobe slub_kunit' will have a warning as shown below. The root cause\nis that __kmalloc_cache_noprof was directly used, which resulted in no\nalloc_tag being allocated. This caused current-\u003ealloc_tag to be null,\nleading to a warning in alloc_tag_add_check.\n\nLet's add an alloc_hook layer to __kmalloc_cache_noprof specifically\nwithin lib/slub_kunit.c, which is the only user of this internal slub\nfunction outside kmalloc implementation itself.\n\n[58162.947016] WARNING: CPU: 2 PID: 6210 at\n./include/linux/alloc_tag.h:125 alloc_tagging_slab_alloc_hook+0x268/0x27c\n[58162.957721] Call trace:\n[58162.957919]  alloc_tagging_slab_alloc_hook+0x268/0x27c\n[58162.958286]  __kmalloc_cache_noprof+0x14c/0x344\n[58162.958615]  test_kmalloc_redzone_access+0x50/0x10c [slub_kunit]\n[58162.959045]  kunit_try_run_case+0x74/0x184 [kunit]\n[58162.959401]  kunit_generic_run_threadfn_adapter+0x2c/0x4c [kunit]\n[58162.959841]  kthread+0x10c/0x118\n[58162.960093]  ret_from_fork+0x10/0x20\n[58162.960363] ---[ end trace 0000000000000000 ]---","modified":"2026-04-02T12:22:41.612107Z","published":"2024-11-19T17:19:35.260Z","related":["USN-7276-1","USN-7277-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/53xxx/CVE-2024-53049.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2b059d0d1e624adc6e69a754bc48057f8bf459dc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/79aea7dfd98fbbf282d1408fc21849fc9a677768"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/53xxx/CVE-2024-53049.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-53049"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a0a44d9175b349df2462089140fb7f292100bd7c"},{"fixed":"79aea7dfd98fbbf282d1408fc21849fc9a677768"},{"fixed":"2b059d0d1e624adc6e69a754bc48057f8bf459dc"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-53049.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}