248 lines
13 KiB
JSON
248 lines
13 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-2026-98735",
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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": "2026-09-25T10:25:14.367Z",
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"datePublished": "2026-10-18T15:47:13.062Z",
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"dateUpdated": "2026-10-30T12:39:11.976Z"
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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": "2026-10-30T12:39:11.976Z"
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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\nBluetooth: hci_core: Serialize ACL scheduling with channel deletion\n\nhci_chan_sent() selects a channel under RCU but drops the read lock before\naccessing chan->conn and returning the channel. The ACL and LE schedulers\nthen use its packet queue and update its transmit counters without any\nprotection against channel deletion.\n\nAfter TX selects a channel and releases RCU, a disconnect command timeout\non the separate request workqueue can run hci_conn_failed() and\nl2cap_conn_del(). hci_chan_del() can then unlink the channel, complete\nsynchronize_rcu(), purge its queue and free it before TX resumes. This\ncauses use-after-free both in hci_chan_sent() and in its callers.\n\nKASAN reported:\n\n BUG: KASAN: slab-use-after-free in hci_chan_sent+0x892/0x9b0\n Workqueue: hci0 hci_tx_work\n Call Trace:\n hci_chan_sent+0x892/0x9b0\n hci_tx_work+0x5e6/0xb70\n Allocated by task 91:\n hci_chan_create+0xe3/0x350\n l2cap_conn_add.part.0+0x12/0xa30\n l2cap_chan_connect+0x110d/0x1b60\n l2cap_sock_connect+0x310/0x530\n Freed by task 99:\n hci_chan_del+0x11f/0x170\n l2cap_conn_del+0x4f1/0x800\n l2cap_connect_cfm+0x88c/0xd30\n hci_conn_failed+0x150/0x250\n hci_abort_conn_sync+0x3e3/0x800\n hci_cmd_sync_run+0x7e/0xc0\n hci_abort_conn+0x105/0x1f0\n disconnect_sync+0x157/0x290\n hci_cmd_sync_work+0x13c/0x290\n\nHold the existing device mutex across channel selection and transmission\nin both schedulers to serialize them with channel teardown. Keep timeout\nhandling outside the critical sections because hci_link_tx_to() acquires\nthe same mutex. This also permits the transmit path to sleep, unlike\nextending the RCU read-side critical section across packet submission."
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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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"net/bluetooth/hci_core.c"
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],
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"versions": [
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{
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"version": "3eff45eaf81780dad25c167bbaafa7d25ae407da",
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"lessThan": "126714c495bf31a5e71411b8e0b65a685bb5e58d",
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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": "3eff45eaf81780dad25c167bbaafa7d25ae407da",
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"lessThan": "7fbeda3dcd5f54e7429f4b5e2cfa7344b7e9b1c9",
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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": "3eff45eaf81780dad25c167bbaafa7d25ae407da",
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"lessThan": "74667f6eb7c12b65c56e02e0f527e4099db4ebfd",
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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": "3eff45eaf81780dad25c167bbaafa7d25ae407da",
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"lessThan": "780affacd92977fd9b819bdc4f26a6832cb27fda",
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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": "3eff45eaf81780dad25c167bbaafa7d25ae407da",
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"lessThan": "51f95ea451f25d7e3f048c0f438f04fa74688aae",
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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": "3eff45eaf81780dad25c167bbaafa7d25ae407da",
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"lessThan": "86e9708f9d19a7f1bd5dc9c1652d07707f79f5bd",
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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": "3eff45eaf81780dad25c167bbaafa7d25ae407da",
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"lessThan": "4fda8f0abeea9929036446d89a476fb8298abcb0",
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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": "3eff45eaf81780dad25c167bbaafa7d25ae407da",
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"lessThan": "f4845ab191a4f686a5da481fbba90ed73bb693b0",
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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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"net/bluetooth/hci_core.c"
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],
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"versions": [
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{
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"version": "3.3",
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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": "3.3",
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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": "5.10.273",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.224",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.191",
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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": "6.6.160",
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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": "6.12.113",
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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": "6.18.56",
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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": "7.2.10",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "3.3",
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"versionEndExcluding": "5.10.273"
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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": "3.3",
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"versionEndExcluding": "5.15.224"
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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": "3.3",
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"versionEndExcluding": "6.1.191"
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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": "3.3",
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"versionEndExcluding": "6.6.160"
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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": "3.3",
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"versionEndExcluding": "6.12.113"
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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": "3.3",
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"versionEndExcluding": "6.18.56"
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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": "3.3",
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"versionEndExcluding": "7.2.10"
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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": "3.3",
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"versionEndExcluding": "7.3"
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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/126714c495bf31a5e71411b8e0b65a685bb5e58d"
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},
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{
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"url": "https://git.kernel.org/stable/c/7fbeda3dcd5f54e7429f4b5e2cfa7344b7e9b1c9"
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},
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{
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"url": "https://git.kernel.org/stable/c/74667f6eb7c12b65c56e02e0f527e4099db4ebfd"
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},
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{
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"url": "https://git.kernel.org/stable/c/780affacd92977fd9b819bdc4f26a6832cb27fda"
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},
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{
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"url": "https://git.kernel.org/stable/c/51f95ea451f25d7e3f048c0f438f04fa74688aae"
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},
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{
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"url": "https://git.kernel.org/stable/c/86e9708f9d19a7f1bd5dc9c1652d07707f79f5bd"
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},
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{
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"url": "https://git.kernel.org/stable/c/4fda8f0abeea9929036446d89a476fb8298abcb0"
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},
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{
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"url": "https://git.kernel.org/stable/c/f4845ab191a4f686a5da481fbba90ed73bb693b0"
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}
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],
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"title": "Bluetooth: hci_core: Serialize ACL scheduling with channel deletion",
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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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} |