| From bippy-7c5fe7eed585 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-21936: Bluetooth: Add check for mgmt_alloc_skb() in mgmt_device_connected() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| Bluetooth: Add check for mgmt_alloc_skb() in mgmt_device_connected() |
| |
| Add check for the return value of mgmt_alloc_skb() in |
| mgmt_device_connected() to prevent null pointer dereference. |
| |
| The Linux kernel CVE team has assigned CVE-2025-21936 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.17 with commit e96741437ef0a5d18144e790ac894397efda0924 and fixed in 6.1.131 with commit dc516e66fb28c61b248b393e2ddd63bd7f104969 |
| Issue introduced in 5.17 with commit e96741437ef0a5d18144e790ac894397efda0924 and fixed in 6.6.83 with commit bdb1805c248e9694dbb3ffa8867cef2e52cf7261 |
| Issue introduced in 5.17 with commit e96741437ef0a5d18144e790ac894397efda0924 and fixed in 6.12.19 with commit 7841180342c9a0fd97d54f3e62c7369309b5cd84 |
| Issue introduced in 5.17 with commit e96741437ef0a5d18144e790ac894397efda0924 and fixed in 6.13.7 with commit 7d39387886ffe220323cbed5c155233c3276926b |
| Issue introduced in 5.17 with commit e96741437ef0a5d18144e790ac894397efda0924 and fixed in 6.14 with commit d8df010f72b8a32aaea393e36121738bb53ed905 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2025-21936 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| net/bluetooth/mgmt.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/dc516e66fb28c61b248b393e2ddd63bd7f104969 |
| https://git.kernel.org/stable/c/bdb1805c248e9694dbb3ffa8867cef2e52cf7261 |
| https://git.kernel.org/stable/c/7841180342c9a0fd97d54f3e62c7369309b5cd84 |
| https://git.kernel.org/stable/c/7d39387886ffe220323cbed5c155233c3276926b |
| https://git.kernel.org/stable/c/d8df010f72b8a32aaea393e36121738bb53ed905 |
