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Message-ID: <2025051018-CVE-2023-53145-281f@gregkh> Date: Sat, 10 May 2025 16:19:19 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2023-53145: Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition From: Greg Kroah-Hartman <gregkh@...nel.org> Description =========== In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition In btsdio_probe, the data->work is bound with btsdio_work. It will be started in btsdio_send_frame. If the btsdio_remove runs with a unfinished work, there may be a race condition that hdev is freed but used in btsdio_work. Fix it by canceling the work before do cleanup in btsdio_remove. The Linux kernel CVE team has assigned CVE-2023-53145 to this issue. Affected and fixed versions =========================== Fixed in 4.14.326 with commit 6c3653627397a0d6eab19b20a59423e118985a6b Fixed in 4.19.295 with commit 3efcbf25e5ab4d4ad1b7e6ba0869ff85540e3f6e Fixed in 5.4.257 with commit a6650d27ab2c12a8ee750f396edb5ac8b4558b2e Fixed in 5.10.195 with commit 746b363bef41cc159c051c47f9e30800bc6b520d Fixed in 5.15.131 with commit a5c2a467e9e789ae0891de55b766daac52e3b7b3 Fixed in 6.1.52 with commit 179c65828593aff1f444e15debd40a477cb23cf4 Fixed in 6.3 with commit 73f7b171b7c09139eb3c6a5677c200dc1be5f318 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-2023-53145 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: drivers/bluetooth/btsdio.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/6c3653627397a0d6eab19b20a59423e118985a6b https://git.kernel.org/stable/c/3efcbf25e5ab4d4ad1b7e6ba0869ff85540e3f6e https://git.kernel.org/stable/c/a6650d27ab2c12a8ee750f396edb5ac8b4558b2e https://git.kernel.org/stable/c/746b363bef41cc159c051c47f9e30800bc6b520d https://git.kernel.org/stable/c/a5c2a467e9e789ae0891de55b766daac52e3b7b3 https://git.kernel.org/stable/c/179c65828593aff1f444e15debd40a477cb23cf4 https://git.kernel.org/stable/c/73f7b171b7c09139eb3c6a5677c200dc1be5f318
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