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Message-ID: <2025122423-CVE-2023-53990-b239@gregkh> Date: Wed, 24 Dec 2025 11:56:34 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2023-53990: SMB3: Add missing locks to protect deferred close file list From: Greg Kroah-Hartman <gregkh@...nel.org> Description =========== In the Linux kernel, the following vulnerability has been resolved: SMB3: Add missing locks to protect deferred close file list cifs_del_deferred_close function has a critical section which modifies the deferred close file list. We must acquire deferred_lock before calling cifs_del_deferred_close function. The Linux kernel CVE team has assigned CVE-2023-53990 to this issue. Affected and fixed versions =========================== Issue introduced in 5.15.63 with commit 860efae127888ae535bc4eda1b7f27642727c69e and fixed in 5.15.111 with commit 0f87e18203bd30f71eb1a65259e28e291b6cc43a Issue introduced in 6.0 with commit ca08d0eac020d48a3141dbec0a3cf64fbdb17cde and fixed in 6.1.28 with commit 3aa9d065b0685b4e6052f3f2a2462966fdc44fd2 Issue introduced in 6.0 with commit ca08d0eac020d48a3141dbec0a3cf64fbdb17cde and fixed in 6.2.15 with commit cb36365dac25d546ca4af0eb22acb43c9b4ddfdf Issue introduced in 6.0 with commit ca08d0eac020d48a3141dbec0a3cf64fbdb17cde and fixed in 6.3.2 with commit 32a046ccaeea6c19965c04a4c521e703f6607924 Issue introduced in 6.0 with commit ca08d0eac020d48a3141dbec0a3cf64fbdb17cde and fixed in 6.4 with commit ab9ddc87a9055c4bebd6524d5d761d605d52e557 Issue introduced in 5.19.4 with commit 60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5 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-2023-53990 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: fs/cifs/misc.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/0f87e18203bd30f71eb1a65259e28e291b6cc43a https://git.kernel.org/stable/c/3aa9d065b0685b4e6052f3f2a2462966fdc44fd2 https://git.kernel.org/stable/c/cb36365dac25d546ca4af0eb22acb43c9b4ddfdf https://git.kernel.org/stable/c/32a046ccaeea6c19965c04a4c521e703f6607924 https://git.kernel.org/stable/c/ab9ddc87a9055c4bebd6524d5d761d605d52e557
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