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Message-ID: <2025050817-CVE-2025-37812-44fd@gregkh> Date: Thu, 8 May 2025 08:39:21 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2025-37812: usb: cdns3: Fix deadlock when using NCM gadget From: Greg Kroah-Hartman <gregkh@...nel.org> Description =========== In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: Fix deadlock when using NCM gadget The cdns3 driver has the same NCM deadlock as fixed in cdnsp by commit 58f2fcb3a845 ("usb: cdnsp: Fix deadlock issue during using NCM gadget"). Under PREEMPT_RT the deadlock can be readily triggered by heavy network traffic, for example using "iperf --bidir" over NCM ethernet link. The deadlock occurs because the threaded interrupt handler gets preempted by a softirq, but both are protected by the same spinlock. Prevent deadlock by disabling softirq during threaded irq handler. The Linux kernel CVE team has assigned CVE-2025-37812 to this issue. Affected and fixed versions =========================== Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 5.4.293 with commit eebfb64c624fc738b669100173344fb441c5e719 Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 5.10.237 with commit 59a760e4796a3cd88d8b9d7706e0a638de677751 Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 5.15.181 with commit b96239582531775f2fdcb14de29bdb6870fd4c8c Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 6.1.136 with commit c27db84ed44e50ff90d9e3a2a25fae2e0a0fa015 Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 6.6.89 with commit 48a62deb857f0694f611949015e70ad194d97159 Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 6.12.26 with commit 74cd6e408a4c010e404832f0e4609d29bf1d0c41 Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 6.14.5 with commit 09e90a9689a4aac7a2f726dc2aa472b0b37937b7 Issue introduced in 5.4 with commit 7733f6c32e36ff9d7adadf40001039bf219b1cbe and fixed in 6.15-rc4 with commit a1059896f2bfdcebcdc7153c3be2307ea319501f 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-2025-37812 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/usb/cdns3/cdns3-gadget.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/eebfb64c624fc738b669100173344fb441c5e719 https://git.kernel.org/stable/c/59a760e4796a3cd88d8b9d7706e0a638de677751 https://git.kernel.org/stable/c/b96239582531775f2fdcb14de29bdb6870fd4c8c https://git.kernel.org/stable/c/c27db84ed44e50ff90d9e3a2a25fae2e0a0fa015 https://git.kernel.org/stable/c/48a62deb857f0694f611949015e70ad194d97159 https://git.kernel.org/stable/c/74cd6e408a4c010e404832f0e4609d29bf1d0c41 https://git.kernel.org/stable/c/09e90a9689a4aac7a2f726dc2aa472b0b37937b7 https://git.kernel.org/stable/c/a1059896f2bfdcebcdc7153c3be2307ea319501f
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