{"id":"CVE-2022-49235","summary":"ath9k_htc: fix uninit value bugs","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nath9k_htc: fix uninit value bugs\n\nSyzbot reported 2 KMSAN bugs in ath9k. All of them are caused by missing\nfield initialization.\n\nIn htc_connect_service() svc_meta_len and pad are not initialized. Based\non code it looks like in current skb there is no service data, so simply\ninitialize svc_meta_len to 0.\n\nhtc_issue_send() does not initialize htc_frame_hdr::control array. Based\non firmware code, it will initialize it by itself, so simply zero whole\narray to make KMSAN happy\n\nFail logs:\n\nBUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430\n usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430\n hif_usb_send_regout drivers/net/wireless/ath/ath9k/hif_usb.c:127 [inline]\n hif_usb_send+0x5f0/0x16f0 drivers/net/wireless/ath/ath9k/hif_usb.c:479\n htc_issue_send drivers/net/wireless/ath/ath9k/htc_hst.c:34 [inline]\n htc_connect_service+0x143e/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:275\n...\n\nUninit was created at:\n slab_post_alloc_hook mm/slab.h:524 [inline]\n slab_alloc_node mm/slub.c:3251 [inline]\n __kmalloc_node_track_caller+0xe0c/0x1510 mm/slub.c:4974\n kmalloc_reserve net/core/skbuff.c:354 [inline]\n __alloc_skb+0x545/0xf90 net/core/skbuff.c:426\n alloc_skb include/linux/skbuff.h:1126 [inline]\n htc_connect_service+0x1029/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:258\n...\n\nBytes 4-7 of 18 are uninitialized\nMemory access of size 18 starts at ffff888027377e00\n\nBUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430\n usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430\n hif_usb_send_regout drivers/net/wireless/ath/ath9k/hif_usb.c:127 [inline]\n hif_usb_send+0x5f0/0x16f0 drivers/net/wireless/ath/ath9k/hif_usb.c:479\n htc_issue_send drivers/net/wireless/ath/ath9k/htc_hst.c:34 [inline]\n htc_connect_service+0x143e/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:275\n...\n\nUninit was created at:\n slab_post_alloc_hook mm/slab.h:524 [inline]\n slab_alloc_node mm/slub.c:3251 [inline]\n __kmalloc_node_track_caller+0xe0c/0x1510 mm/slub.c:4974\n kmalloc_reserve net/core/skbuff.c:354 [inline]\n __alloc_skb+0x545/0xf90 net/core/skbuff.c:426\n alloc_skb include/linux/skbuff.h:1126 [inline]\n htc_connect_service+0x1029/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:258\n...\n\nBytes 16-17 of 18 are uninitialized\nMemory access of size 18 starts at ffff888027377e00","modified":"2026-04-02T08:27:24.792306Z","published":"2025-02-26T01:56:00.212Z","related":["SUSE-SU-2025:01983-1","SUSE-SU-2025:1027-1","SUSE-SU-2025:1176-1","SUSE-SU-2025:1183-1","SUSE-SU-2025:1194-1","SUSE-SU-2025:1241-1","SUSE-SU-2025:1263-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49235.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0b700f7d06492de34964b6f414120043364f8191"},{"type":"WEB","url":"https://git.kernel.org/stable/c/11f11ac281f0c0b363d2940204f28bae0422ed71"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4d244b731188e0b63fc40a9d2dec72e9181fb37c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5abf2b761b998063f5e2bae93fd4ab10e2a80f10"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5c2a6a8daa17a3f65b38b9a5574bb362c13fa1d9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7da6169b6ebb75816b57be3beb829afa74f3b4b6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d1e0df1c57bd30871dd1c855742a7c346dbca853"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e352acdd378e9263cc4c6018e588f2dac7161d07"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ee4222052a76559c20e821bc3519cefb58b6d3e9"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49235.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49235"},{"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":"fb9987d0f748c983bb795a86f47522313f701a08"},{"fixed":"5c2a6a8daa17a3f65b38b9a5574bb362c13fa1d9"},{"fixed":"e352acdd378e9263cc4c6018e588f2dac7161d07"},{"fixed":"ee4222052a76559c20e821bc3519cefb58b6d3e9"},{"fixed":"4d244b731188e0b63fc40a9d2dec72e9181fb37c"},{"fixed":"11f11ac281f0c0b363d2940204f28bae0422ed71"},{"fixed":"0b700f7d06492de34964b6f414120043364f8191"},{"fixed":"7da6169b6ebb75816b57be3beb829afa74f3b4b6"},{"fixed":"5abf2b761b998063f5e2bae93fd4ab10e2a80f10"},{"fixed":"d1e0df1c57bd30871dd1c855742a7c346dbca853"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49235.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"}]}