{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-80764", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.791Z", "datePublished": "2026-09-04T15:12:36.599Z", "dateUpdated": "2026-10-19T08:43:20.790Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:43:20.790Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: fix LE list UAF on reset\n\nhci_cc_reset() clears the LE accept and resolving lists without taking\nhdev->lock. Other command-complete handlers serialize updates to these\nlists with that lock, and the debugfs readers hold it while walking them.\n\nThis permits the reset completion and a debugfs read to interleave as\nfollows:\n\n hci_rx_work debugfs reader\n ----------- --------------\n lock hdev->lock\n fetch current entry\n list_del(entry)\n kfree(entry)\n read entry fields\n\nThe reader then dereferences a freed list entry and may follow its stale\nnext pointer.\n\nKASAN reported:\n\n BUG: KASAN: slab-use-after-free in white_list_show+0x15f/0x180\n Read of size 1 at addr ffff8881015dab16 by task poc/95\n\n Call Trace:\n white_list_show+0x15f/0x180\n seq_read_iter+0x3ff/0x1190\n seq_read+0x267/0x3d0\n vfs_read+0x177/0xa20\n ksys_read+0xf7/0x1c0\n\n Allocated by task 91:\n hci_bdaddr_list_add+0x1a6/0x3a0\n hci_cc_le_add_to_accept_list+0xab/0x140\n hci_cmd_complete_evt+0x26c/0x9a0\n hci_event_packet+0x454/0xb20\n hci_rx_work+0x293/0x730\n\n Freed by task 90:\n kfree+0x131/0x3c0\n hci_bdaddr_list_clear+0xd8/0x160\n hci_cc_reset+0x28a/0x370\n hci_cmd_complete_evt+0x26c/0x9a0\n hci_event_packet+0x454/0xb20\n hci_rx_work+0x293/0x730\n\nTake hdev->lock around both list clears. This matches the existing\nmutation and traversal locking convention." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/bluetooth/hci_event.c" ], "versions": [ { "version": "a4d5504d5c39cc84f1f828e19967595597a8136e", "lessThan": "8e68c380290b1dd64a0a512ce66d0264130c46ed", "status": "affected", "versionType": "git" }, { "version": "a4d5504d5c39cc84f1f828e19967595597a8136e", "lessThan": "0628cc9b2fa29985a7b8c774741f8a736b0f5e7c", "status": "affected", "versionType": "git" }, { "version": "a4d5504d5c39cc84f1f828e19967595597a8136e", "lessThan": "d57702d4c55633c243da5a2fec37ae2ad4adb621", "status": "affected", "versionType": "git" }, { "version": "a4d5504d5c39cc84f1f828e19967595597a8136e", "lessThan": "39a3afb91be3cb465f46ce7a8e5696d9e33edf93", "status": "affected", "versionType": "git" }, { "version": "a4d5504d5c39cc84f1f828e19967595597a8136e", "lessThan": "b55e83a4ba31d40deae22d4e4dc8c84083e953c6", "status": "affected", "versionType": "git" }, { "version": "a4d5504d5c39cc84f1f828e19967595597a8136e", "lessThan": "25b05e3ce31d954540e99954bcc66cbceb27ab35", "status": "affected", "versionType": "git" }, { "version": "a4d5504d5c39cc84f1f828e19967595597a8136e", "lessThan": "33af47e847fe4a28b109673affb5874015d54f5a", "status": "affected", "versionType": "git" }, { "version": "0de8cd646b0152c9ddd10257d8284938d0df0181", "status": "affected", "versionType": "git" }, { "version": "3.18.3", "lessThan": "3.19", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/bluetooth/hci_event.c" ], "versions": [ { "version": "3.19", "status": "affected" }, { "version": "0", "lessThan": "3.19", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.185", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.154", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.106", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.47", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.11", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.1", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.19", "versionEndExcluding": "6.1.185" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.19", "versionEndExcluding": "6.6.154" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.19", "versionEndExcluding": "6.12.106" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.19", "versionEndExcluding": "6.18.47" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.19", "versionEndExcluding": "7.1.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.19", "versionEndExcluding": "7.2.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.19", "versionEndExcluding": "7.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/8e68c380290b1dd64a0a512ce66d0264130c46ed" }, { "url": "https://git.kernel.org/stable/c/0628cc9b2fa29985a7b8c774741f8a736b0f5e7c" }, { "url": "https://git.kernel.org/stable/c/d57702d4c55633c243da5a2fec37ae2ad4adb621" }, { "url": "https://git.kernel.org/stable/c/39a3afb91be3cb465f46ce7a8e5696d9e33edf93" }, { "url": "https://git.kernel.org/stable/c/b55e83a4ba31d40deae22d4e4dc8c84083e953c6" }, { "url": "https://git.kernel.org/stable/c/25b05e3ce31d954540e99954bcc66cbceb27ab35" }, { "url": "https://git.kernel.org/stable/c/33af47e847fe4a28b109673affb5874015d54f5a" } ], "title": "Bluetooth: hci_event: fix LE list UAF on reset", "x_generator": { "engine": "bippy-1.2.0" } } } }