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Message-ID: <2025050814-CVE-2025-37802-0f78@gregkh> Date: Thu, 8 May 2025 08:39:11 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2025-37802: ksmbd: fix WARNING "do not call blocking ops when !TASK_RUNNING" From: Greg Kroah-Hartman <gregkh@...nel.org> Description =========== In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix WARNING "do not call blocking ops when !TASK_RUNNING" wait_event_timeout() will set the state of the current task to TASK_UNINTERRUPTIBLE, before doing the condition check. This means that ksmbd_durable_scavenger_alive() will try to acquire the mutex while already in a sleeping state. The scheduler warns us by giving the following warning: do not call blocking ops when !TASK_RUNNING; state=2 set at [<0000000061515a6f>] prepare_to_wait_event+0x9f/0x6c0 WARNING: CPU: 2 PID: 4147 at kernel/sched/core.c:10099 __might_sleep+0x12f/0x160 mutex lock is not needed in ksmbd_durable_scavenger_alive(). The Linux kernel CVE team has assigned CVE-2025-37802 to this issue. Affected and fixed versions =========================== Fixed in 6.12.26 with commit 8f805b3746d2f41702c77cba22f94f8415fadd1a Fixed in 6.14.5 with commit cd161198e091e8a62b9bd631be970ea9a87d2d6a Fixed in 6.15-rc3 with commit 1df0d4c616138784e033ad337961b6e1a6bcd999 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-2025-37802 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/smb/server/vfs_cache.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/8f805b3746d2f41702c77cba22f94f8415fadd1a https://git.kernel.org/stable/c/cd161198e091e8a62b9bd631be970ea9a87d2d6a https://git.kernel.org/stable/c/1df0d4c616138784e033ad337961b6e1a6bcd999
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