{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-31511", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.106Z", "datePublished": "2026-04-22T13:54:29.420Z", "dateUpdated": "2026-08-05T12:23:11.297Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:23:11.297Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: Fix dangling pointer on mgmt_add_adv_patterns_monitor_complete\n\nThis fixes the condition checking so mgmt_pending_valid is executed\nwhenever status != -ECANCELED otherwise calling mgmt_pending_free(cmd)\nwould kfree(cmd) without unlinking it from the list first, leaving a\ndangling pointer. Any subsequent list traversal (e.g.,\nmgmt_pending_foreach during __mgmt_power_off, or another\nmgmt_pending_valid call) would dereference freed memory." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable path is reached by a local process sending `MGMT_OP_ADD_ADV_PATTERNS_MONITOR` or `_RSSI` over a `PF_BLUETOOTH` HCI management/control socket. Remote Bluetooth peers do not issue MGMT commands into this path.\nAC:L - The bug occurs on normal non-canceled completion: the command is freed without being unlinked, and the attacker can trigger later list traversal with another MGMT command or device power/index removal. No uncontrollable race is required.\nPR:L - The affected handlers are not marked untrusted, so the socket must be trusted via `CAP_NET_ADMIN`. Because the checks use namespace-scoped capability checks and can be satisfied by an unprivileged local user through user namespaces in plausible deployments, this is Low rather than High.\nUI:N - After obtaining the required local privileges, the attacker can send the MGMT command and trigger the follow-up traversal directly. No victim action is required.\nS:U - The vulnerability corrupts kernel Bluetooth/MGMT state within the same kernel security authority. This is standard local kernel memory corruption, not a VM, IOMMU, or cross-authority boundary escape for CVSS scope.\nC:H - This is a use-after-free of `struct mgmt_pending_cmd` left on a kernel list, and freed slab contents can be reclaimed or read during later traversal. Under the required conservative kernel guidance, UAFs are scored as high confidentiality impact.\nI:H - The dangling list entry can lead to attacker-influenced use of freed kernel memory and list operations/callback dereferences, which is defensibly exploitable beyond a crash. Under the required conservative kernel guidance, UAF memory corruption is high integrity impact.\nA:H - Subsequent traversal of the freed pending command can dereference freed memory and cause a kernel oops/panic, as similar MGMT UAF fixes show. The attacker can trigger this repeatedly once the vulnerable state is created." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/bluetooth/mgmt.c" ], "versions": [ { "version": "0b60eb04b8524e1b4b3f07fea0d16fda9a677d9a", "lessThan": "2074dfffad76981ca451cb7fc98703d04ac562fe", "status": "affected", "versionType": "git" }, { "version": "d71b98f253b079cbadc83266383f26fe7e9e103b", "lessThan": "340666172cf747de58c283d2eef1f335f050538b", "status": "affected", "versionType": "git" }, { "version": "302a1f674c00dd5581ab8e493ef44767c5101aab", "lessThan": "bafec9325d4de26b6c49db75b5d5172de652aae0", "status": "affected", "versionType": "git" }, { "version": "302a1f674c00dd5581ab8e493ef44767c5101aab", "lessThan": "3a89c33deffb3cb7877a7ea2e50734cd12b064f2", "status": "affected", "versionType": "git" }, { "version": "302a1f674c00dd5581ab8e493ef44767c5101aab", "lessThan": "5f5fa4cd35f707344f65ce9e225b6528691dbbaa", "status": "affected", "versionType": "git" }, { "version": "87a1f16f07c6c43771754075e08f45b41d237421", "status": "affected", "versionType": "git" }, { "version": "6.12.59", "lessThan": "6.12.80", "status": "affected", "versionType": "semver" }, { "version": "6.16.10", "lessThan": "6.17", "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/mgmt.c" ], "versions": [ { "version": "6.17", "status": "affected" }, { "version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.80", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.21", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19.11", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0", "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": "6.12.59", "versionEndExcluding": "6.12.80" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.21" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.19.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.0" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16.10" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/2074dfffad76981ca451cb7fc98703d04ac562fe" }, { "url": "https://git.kernel.org/stable/c/340666172cf747de58c283d2eef1f335f050538b" }, { "url": "https://git.kernel.org/stable/c/bafec9325d4de26b6c49db75b5d5172de652aae0" }, { "url": "https://git.kernel.org/stable/c/3a89c33deffb3cb7877a7ea2e50734cd12b064f2" }, { "url": "https://git.kernel.org/stable/c/5f5fa4cd35f707344f65ce9e225b6528691dbbaa" } ], "title": "Bluetooth: MGMT: Fix dangling pointer on mgmt_add_adv_patterns_monitor_complete", "x_generator": { "engine": "bippy-1.2.0" } } } }