CVE-2026-99091
- Source
- https://cve.org/CVERecord?id=CVE-2026-99091
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-99091.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-99091
- Downstream
BELL (1)
DEBIAN (1)
SUSE (6)
- Related
- Published
- 2026-10-26T14:52:00Z
- Modified
- 2026-11-13T04:00:21Z
- Summary
- Bluetooth: MGMT: Fix status of pending commands flushed on power off
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: MGMT: Fix status of pending commands flushed on power off
cmd_complete_rsp() receives a struct cmd_lookup and, for a pending command that has no cmd_complete callback, falls through to cmd_status_rsp(cmd, data). cmd_status_rsp() reads data as a u8 *, so the status sent comes from the first byte of match->sk's representation, not from match->mgmt_status.
commit f53e1c9c726d ("Bluetooth: MGMT: Fix possible crash on mgmt_index_removed") changed the callers' data from &status to &match and updated the cmd_complete branch to match->mgmt_status, but left the fall-through passing data unchanged.
In mgmt_index_removed() match->sk is NULL, so every such command is answered with status 0x00 (Success) instead of MGMT_STATUS_INVALID_INDEX. In __mgmt_power_off() it is NULL too, unless a Set Powered command was pending: then settings_rsp() has stored that command's socket in match->sk, and the byte sent comes from the socket pointer. Either way the status the caller set, MGMT_STATUS_NOT_POWERED (or MGMT_STATUS_INVALID_INDEX when the device is being unregistered), is lost.
Pass the status the callers set.
This was seen on a QCA9377 laptop: bluetoothd's Start Discovery, pending when the adapter was powered off, was answered with Command Status 0x00 and no parameters, and bluetoothd 5.72 crashed on the zero-length success. BlueZ master has since added the length check on that path ("adapter: Fix crash on short start discovery reply", BlueZ a734b06059cb), but userspace should still be told Not Powered, not Success.
Tested on Ubuntu 7.0.0-31 with a virtual controller (hci_vhci): power off is held in HCI Write Scan Enable while a Start Discovery is submitted, and the flush answers it with status 0x00 before this change and 0x0f (Not Powered) after.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99091.json" }- References
-
- https://git.kernel.org/stable/c/07976405a3c71253e50533ee7b7a8b0dc16ab6ba
- https://git.kernel.org/stable/c/44ce36c5789ac84e65de1e98c32db9a5ac04ed47
- https://git.kernel.org/stable/c/7ed7e038b520cf0dfa12d61c2caddb95e2f6922d
- https://git.kernel.org/stable/c/86ef0f58bdecdedb3a1240971c56d71b7e4ce3fc
- https://git.kernel.org/stable/c/bbc485ee811a74fc1d4733d0a2b0eb5aeb271a08
- https://git.kernel.org/stable/c/ec227cddd13cd7ac9077d263a73473ac370a055d
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99091.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-99091
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced19b40ca62607cef78369549d1af091f2fd558931Fixedbbc485ee811a74fc1d4733d0a2b0eb5aeb271a08
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced4883296505aa7e4863c6869b689afb6005633b23Fixed44ce36c5789ac84e65de1e98c32db9a5ac04ed47
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedf53e1c9c726d83092167f2226f32bd3b73f26c21Fixed7ed7e038b520cf0dfa12d61c2caddb95e2f6922dFixedec227cddd13cd7ac9077d263a73473ac370a055dFixed07976405a3c71253e50533ee7b7a8b0dc16ab6baFixed86ef0f58bdecdedb3a1240971c56d71b7e4ce3fc
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0cc47233af35fb5f10b5e6a027cb4ccd480caf9a
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced8c3f7943a29145d8a2d8e24893762f7673323eae
Affected versions
v6.*
Linux / Kernel
Package
- Name
- Kernel
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced6.1.120Fixed6.1.191
- Type
- ECOSYSTEM
- Events
-
Introduced6.6.55Fixed6.6.160
- Type
- ECOSYSTEM
- Events
-
Introduced6.10.14Fixed6.11
- Type
- ECOSYSTEM
- Events
-
Introduced6.11.3Fixed6.12
- Type
- ECOSYSTEM
- Events
-
Introduced6.12.0Fixed6.12.113
- Type
- ECOSYSTEM
- Events
-
Introduced6.13.0Fixed6.18.57
- Type
- ECOSYSTEM
- Events
-
Introduced6.19.0Fixed7.2.11