{"api_version":"1","generated_at":"2026-08-26T13:45:07+00:00","cve":"CVE-2022-49112","urls":{"html":"https://cve.report/CVE-2022-49112","api":"https://cve.report/api/cve/CVE-2022-49112.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-49112","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-49112"},"summary":{"title":"mt76: fix monitor mode crash with sdio driver","description":"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->len < skb->data_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","state":"PUBLISHED","assigner":"Linux","published_at":"2025-02-26 07:00:48","updated_at":"2026-08-13 00:17:28"},"problem_types":["NVD-CWE-noinfo"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/95e2af01669c7a3cb7a933cefa06361f9db15059","name":"https://git.kernel.org/stable/c/95e2af01669c7a3cb7a933cefa06361f9db15059","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/123bc712b1de0805f9d683687e17b1ec2aba0b68","name":"https://git.kernel.org/stable/c/123bc712b1de0805f9d683687e17b1ec2aba0b68","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c37b4cab3d97ef64b206fca4d9daabd9aff7356e","name":"https://git.kernel.org/stable/c/c37b4cab3d97ef64b206fca4d9daabd9aff7356e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-49112","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49112","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 48fab5bbef4092d925ab3214773ad12e68807223 c37b4cab3d97ef64b206fca4d9daabd9aff7356e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 48fab5bbef4092d925ab3214773ad12e68807223 95e2af01669c7a3cb7a933cefa06361f9db15059 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 48fab5bbef4092d925ab3214773ad12e68807223 123bc712b1de0805f9d683687e17b1ec2aba0b68 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.16.20 5.16.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.17.3 5.17.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.18 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2022","cve_id":"49112","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/mediatek/mt76/mt76.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c37b4cab3d97ef64b206fca4d9daabd9aff7356e","status":"affected","version":"48fab5bbef4092d925ab3214773ad12e68807223","versionType":"git"},{"lessThan":"95e2af01669c7a3cb7a933cefa06361f9db15059","status":"affected","version":"48fab5bbef4092d925ab3214773ad12e68807223","versionType":"git"},{"lessThan":"123bc712b1de0805f9d683687e17b1ec2aba0b68","status":"affected","version":"48fab5bbef4092d925ab3214773ad12e68807223","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/mediatek/mt76/mt76.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.16"},{"lessThan":"5.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.16.*","status":"unaffected","version":"5.16.20","versionType":"semver"},{"lessThanOrEqual":"5.17.*","status":"unaffected","version":"5.17.3","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"5.18","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.16.20","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.17.3","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.18","versionStartIncluding":"5.16","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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->len < skb->data_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"}],"providerMetadata":{"dateUpdated":"2026-08-12T23:57:46.056Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/c37b4cab3d97ef64b206fca4d9daabd9aff7356e"},{"url":"https://git.kernel.org/stable/c/95e2af01669c7a3cb7a933cefa06361f9db15059"},{"url":"https://git.kernel.org/stable/c/123bc712b1de0805f9d683687e17b1ec2aba0b68"}],"title":"mt76: fix monitor mode crash with sdio driver","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2022-49112","datePublished":"2025-02-26T01:54:57.109Z","dateReserved":"2025-02-26T01:49:39.261Z","dateUpdated":"2026-08-12T23:57:46.056Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-02-26 07:00:48","lastModifiedDate":"2026-08-13 00:17:28","problem_types":["NVD-CWE-noinfo"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"5.15.34","matchCriteriaId":"5ED7E49C-8A8C-464E-A693-B954F083C885"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"5.16.20","matchCriteriaId":"ABBBA66E-0244-4621-966B-9790AF1EEB00"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"5.17.3","matchCriteriaId":"AE420AC7-1E59-4398-B84F-71F4B4337762"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2022","CveId":"49112","Ordinal":"1","Title":"mt76: fix monitor mode crash with sdio driver","CVE":"CVE-2022-49112","Year":"2022"},"notes":[{"CveYear":"2022","CveId":"49112","Ordinal":"1","NoteData":"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->len < skb->data_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","Type":"Description","Title":"mt76: fix monitor mode crash with sdio driver"}]}}}