{"id":"CVE-2022-49112","summary":"mt76: fix monitor mode crash with sdio driver","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmt76: fix monitor mode crash with sdio driver\n\nmt7921s driver may receive frames with fragment buffers. If there is a\nCTS packet received in monitor mode, the payload is 10 bytes only and\nneed 6 bytes header padding after RXD buffer. However, only RXD in the\nfirst linear buffer, if we pull buffer size RXD-size+6 bytes with\nskb_pull(), that would trigger \"BUG_ON(skb-\u003elen \u003c skb-\u003edata_len)\" in\n__skb_pull().\n\nTo avoid the nonlinear buffer issue, enlarge the RXD size from 128 to\n256 to make sure all MCU operation in linear buffer.\n\n[   52.007562] kernel BUG at include/linux/skbuff.h:2313!\n[   52.007578] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP\n[   52.007987] pc : skb_pull+0x48/0x4c\n[   52.008015] lr : mt7921_queue_rx_skb+0x494/0x890 [mt7921_common]\n[   52.008361] Call trace:\n[   52.008377]  skb_pull+0x48/0x4c\n[   52.008400]  mt76s_net_worker+0x134/0x1b0 [mt76_sdio 35339a92c6eb7d4bbcc806a1d22f56365565135c]\n[   52.008431]  __mt76_worker_fn+0xe8/0x170 [mt76 ef716597d11a77150bc07e3fdd68eeb0f9b56917]\n[   52.008449]  kthread+0x148/0x3ac\n[   52.008466]  ret_from_fork+0x10/0x30","modified":"2026-04-02T08:27:18.206565Z","published":"2025-02-26T01:54:57.109Z","related":["SUSE-SU-2025:1027-1","SUSE-SU-2025:1176-1","SUSE-SU-2025:1183-1","SUSE-SU-2025:1241-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49112.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/123bc712b1de0805f9d683687e17b1ec2aba0b68"},{"type":"WEB","url":"https://git.kernel.org/stable/c/13946d5a68efd11dd6af2f6ef4c908f6b00158a5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/95e2af01669c7a3cb7a933cefa06361f9db15059"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c37b4cab3d97ef64b206fca4d9daabd9aff7356e"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49112.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49112"},{"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":"7bc04215a66b60e198aecaee8418f6d79fa19faa"},{"fixed":"13946d5a68efd11dd6af2f6ef4c908f6b00158a5"},{"fixed":"c37b4cab3d97ef64b206fca4d9daabd9aff7356e"},{"fixed":"95e2af01669c7a3cb7a933cefa06361f9db15059"},{"fixed":"123bc712b1de0805f9d683687e17b1ec2aba0b68"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49112.json"}}],"schema_version":"1.7.5"}