249 lines
12 KiB
JSON
249 lines
12 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-2026-46186",
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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": "2026-05-13T15:03:33.103Z",
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"datePublished": "2026-05-28T09:36:40.349Z",
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"dateUpdated": "2026-06-14T18:01:09.675Z"
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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": "2026-06-14T18:01:09.675Z"
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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: virtio_bt: validate rx pkt_type header length\n\nvirtbt_rx_handle() reads the leading pkt_type byte from the RX skb\nand forwards the remainder to hci_recv_frame() for every\nevent/ACL/SCO/ISO type, without checking that the remaining payload\nis at least the fixed HCI header for that type.\n\nAfter the preceding patch bounds the backend-supplied used.len to\n[1, VIRTBT_RX_BUF_SIZE], a one-byte completion still reaches\nhci_recv_frame() with skb->len already pulled to 0. If the byte\nhappened to be HCI_ACLDATA_PKT, the ACL-vs-ISO classification\nfast-path in hci_dev_classify_pkt_type() dereferences\nhci_acl_hdr(skb)->handle whenever the HCI device has an active\nCIS_LINK, BIS_LINK, or PA_LINK connection, reading two bytes of\nuninitialized RX-buffer data. The same hazard exists for every\npacket type the driver accepts because none of the switch cases in\nvirtbt_rx_handle() check skb->len against the per-type minimum HCI\nheader size before handing the frame to the core.\n\nAfter stripping pkt_type, require skb->len to cover the fixed\nheader size for the selected type (event 2, ACL 4, SCO 3, ISO 4)\nbefore calling hci_recv_frame(); drop ratelimited otherwise.\nUnknown pkt_type values still take the original kfree_skb() default\npath.\n\nUse bt_dev_err_ratelimited() because both the length and pkt_type\nvalues come from an untrusted backend that can otherwise flood the\nkernel log."
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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/bluetooth/virtio_bt.c"
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],
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"versions": [
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{
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"version": "cf2719a21fdb9d4c8e9c834d279163609bef575d",
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"lessThan": "149cfb42ad69c7964fd9f2c43831da9152007129",
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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": "160fbcf3bfb93c3c086427f9f4c8bc70f217e9be",
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"lessThan": "7b2d4c04816cdc887f472caaf7fc966cfc107e40",
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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": "160fbcf3bfb93c3c086427f9f4c8bc70f217e9be",
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"lessThan": "1e1e509b6fd2a42421745bbcd98bd16daad20904",
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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": "160fbcf3bfb93c3c086427f9f4c8bc70f217e9be",
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"lessThan": "2c1143564c71e7497b42d8360a8379ccbb011d3c",
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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": "160fbcf3bfb93c3c086427f9f4c8bc70f217e9be",
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"lessThan": "3485c7236c59c8c34a41af1c4b52982437554e79",
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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": "160fbcf3bfb93c3c086427f9f4c8bc70f217e9be",
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"lessThan": "f743eab6486965f276c7e3f1700895f014fdc6db",
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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": "160fbcf3bfb93c3c086427f9f4c8bc70f217e9be",
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"lessThan": "daf23014e5d975e72ea9c02b5160d3fcf070ea47",
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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": "9b67438e315b925a699f0178f4a48baf3d2d6ef4",
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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": "5.15.78",
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"lessThan": "5.15.209",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.0.8",
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"lessThan": "6.1",
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"status": "affected",
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"versionType": "semver"
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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/bluetooth/virtio_bt.c"
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],
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"versions": [
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{
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"version": "6.1",
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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": "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": "5.15.209",
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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": "6.1.175",
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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": "6.6.140",
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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": "6.12.88",
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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": "6.18.30",
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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": "7.0.7",
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"lessThanOrEqual": "7.0.*",
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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",
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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": "5.15.78",
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"versionEndExcluding": "5.15.209"
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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": "6.1",
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"versionEndExcluding": "6.1.175"
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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": "6.1",
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"versionEndExcluding": "6.6.140"
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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": "6.1",
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"versionEndExcluding": "6.12.88"
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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": "6.1",
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"versionEndExcluding": "6.18.30"
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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": "6.1",
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"versionEndExcluding": "7.0.7"
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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": "6.1",
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"versionEndExcluding": "7.1"
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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": "6.0.8"
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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/149cfb42ad69c7964fd9f2c43831da9152007129"
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},
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{
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"url": "https://git.kernel.org/stable/c/7b2d4c04816cdc887f472caaf7fc966cfc107e40"
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},
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{
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"url": "https://git.kernel.org/stable/c/1e1e509b6fd2a42421745bbcd98bd16daad20904"
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},
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{
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"url": "https://git.kernel.org/stable/c/2c1143564c71e7497b42d8360a8379ccbb011d3c"
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},
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{
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"url": "https://git.kernel.org/stable/c/3485c7236c59c8c34a41af1c4b52982437554e79"
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},
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{
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"url": "https://git.kernel.org/stable/c/f743eab6486965f276c7e3f1700895f014fdc6db"
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},
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{
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"url": "https://git.kernel.org/stable/c/daf23014e5d975e72ea9c02b5160d3fcf070ea47"
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}
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],
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"title": "Bluetooth: virtio_bt: validate rx pkt_type header length",
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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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} |