206 lines
9.9 KiB
JSON
206 lines
9.9 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-68194",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-07-30T09:28:09.374Z",
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"datePublished": "2026-08-10T12:00:12.245Z",
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"dateUpdated": "2026-08-19T16:31:09.017Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-19T16:31:09.017Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921: drop TXRX_NOTIFY on non-mmio buses\n\nPKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7921_rx_check() and\nmt7921_queue_rx_skb() dispatch it to mt7921_mac_tx_free() on every bus.\nmt7921_mac_tx_free() cleans the DMA tx queues with\nmt76_queue_tx_cleanup(), which calls queue_ops->tx_cleanup(). Only the\nmmio queue ops implement that callback; on USB and SDIO it is NULL, so\na TXRX_NOTIFY there calls a NULL pointer in the RX worker:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000000\n RIP: 0010:0x0\n Call Trace:\n mt7921_mac_tx_free+0x64/0x310 [mt7921_common]\n mt7921_rx_check+0x5f/0xf0 [mt7921_common]\n mt76u_rx_worker+0x1b9/0x620 [mt76_usb]\n\nDrop the event on non-mmio buses via mt76_is_mmio(), as in\ncommit 5683e1488aa9 (\"wifi: mt76: connac: do not check WED status for\nnon-mmio devices\")."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/wireless/mediatek/mt76/mt7921/mac.c"
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],
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"versions": [
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{
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"version": "48fab5bbef4092d925ab3214773ad12e68807223",
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"lessThan": "7003a2cbddd7917933c1f169c7874cfa6ab852c3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "48fab5bbef4092d925ab3214773ad12e68807223",
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"lessThan": "ef2ee5f820c3ef87643b51e960c20b4a14d8336b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "48fab5bbef4092d925ab3214773ad12e68807223",
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"lessThan": "ecf995b828191829ba4a87169bccabcbeb5c9c32",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "48fab5bbef4092d925ab3214773ad12e68807223",
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"lessThan": "263816e92e8d66c81c98ccab2b5d2191ed08ec71",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "48fab5bbef4092d925ab3214773ad12e68807223",
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"lessThan": "24475d2ddc8d8dfd82f4d2be0d951401f86911a6",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "48fab5bbef4092d925ab3214773ad12e68807223",
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"lessThan": "da4082e91acabc1498611ed8ccc53f0610baefc6",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/wireless/mediatek/mt76/mt7921/mac.c"
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],
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"versions": [
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{
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"version": "5.16",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.16",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.183",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.148",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.101",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.42",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.6",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.16",
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"versionEndExcluding": "6.1.183"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.16",
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"versionEndExcluding": "6.6.148"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.16",
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"versionEndExcluding": "6.12.101"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.16",
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"versionEndExcluding": "6.18.42"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.16",
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"versionEndExcluding": "7.1.6"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.16",
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/7003a2cbddd7917933c1f169c7874cfa6ab852c3"
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},
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{
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"url": "https://git.kernel.org/stable/c/ef2ee5f820c3ef87643b51e960c20b4a14d8336b"
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},
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{
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"url": "https://git.kernel.org/stable/c/ecf995b828191829ba4a87169bccabcbeb5c9c32"
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},
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{
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"url": "https://git.kernel.org/stable/c/263816e92e8d66c81c98ccab2b5d2191ed08ec71"
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},
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{
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"url": "https://git.kernel.org/stable/c/24475d2ddc8d8dfd82f4d2be0d951401f86911a6"
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},
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{
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"url": "https://git.kernel.org/stable/c/da4082e91acabc1498611ed8ccc53f0610baefc6"
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}
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],
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"title": "wifi: mt76: mt7921: drop TXRX_NOTIFY on non-mmio buses",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |