| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-23140: misc: pci_endpoint_test: Avoid issue of interrupts remaining after request_irq error |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| misc: pci_endpoint_test: Avoid issue of interrupts remaining after request_irq error |
| |
| After devm_request_irq() fails with error in pci_endpoint_test_request_irq(), |
| the pci_endpoint_test_free_irq_vectors() is called assuming that all IRQs |
| have been released. |
| |
| However, some requested IRQs remain unreleased, so there are still |
| /proc/irq/* entries remaining, and this results in WARN() with the |
| following message: |
| |
| remove_proc_entry: removing non-empty directory 'irq/30', leaking at least 'pci-endpoint-test.0' |
| WARNING: CPU: 0 PID: 202 at fs/proc/generic.c:719 remove_proc_entry +0x190/0x19c |
| |
| To solve this issue, set the number of remaining IRQs to test->num_irqs, |
| and release IRQs in advance by calling pci_endpoint_test_release_irq(). |
| |
| [kwilczynski: commit log] |
| |
| The Linux kernel CVE team has assigned CVE-2025-23140 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.19 with commit e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 and fixed in 5.4.293 with commit 705be96504779e4a333ea042b4779ea941f0ace9 |
| Issue introduced in 4.19 with commit e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 and fixed in 5.10.237 with commit e516e187bf32d8decc7c7d0025ae4857cad13c0e |
| Issue introduced in 4.19 with commit e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 and fixed in 5.15.181 with commit 54c9f299ad7d7c4be5d271ed12d01a59e95b8907 |
| Issue introduced in 4.19 with commit e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 and fixed in 6.1.135 with commit 9d5118b107b1a2353ed0dff24404aee2e6b7ca0a |
| Issue introduced in 4.19 with commit e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 and fixed in 6.6.88 with commit 5a4b7181213268c9b07bef8800905528435db44a |
| Issue introduced in 4.19 with commit e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 and fixed in 6.12.25 with commit 0557e70e2aeba8647bf5a950820b67cfb86533db |
| Issue introduced in 4.19 with commit e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 and fixed in 6.14.3 with commit 770407f6173f4f39f4e2c1b54422b79ce6c98bdb |
| Issue introduced in 4.19 with commit e03327122e2c8e6ae4565ef5b3d3cbe4364546a1 and fixed in 6.15 with commit f6cb7828c8e17520d4f5afb416515d3fae1af9a9 |
| |
| 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-2025-23140 |
| 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/misc/pci_endpoint_test.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/705be96504779e4a333ea042b4779ea941f0ace9 |
| https://git.kernel.org/stable/c/e516e187bf32d8decc7c7d0025ae4857cad13c0e |
| https://git.kernel.org/stable/c/54c9f299ad7d7c4be5d271ed12d01a59e95b8907 |
| https://git.kernel.org/stable/c/9d5118b107b1a2353ed0dff24404aee2e6b7ca0a |
| https://git.kernel.org/stable/c/5a4b7181213268c9b07bef8800905528435db44a |
| https://git.kernel.org/stable/c/0557e70e2aeba8647bf5a950820b67cfb86533db |
| https://git.kernel.org/stable/c/770407f6173f4f39f4e2c1b54422b79ce6c98bdb |
| https://git.kernel.org/stable/c/f6cb7828c8e17520d4f5afb416515d3fae1af9a9 |
