| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-56532: ALSA: us122l: Use snd_card_free_when_closed() at disconnection |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ALSA: us122l: Use snd_card_free_when_closed() at disconnection |
| |
| The USB disconnect callback is supposed to be short and not too-long |
| waiting. OTOH, the current code uses snd_card_free() at |
| disconnection, but this waits for the close of all used fds, hence it |
| can take long. It eventually blocks the upper layer USB ioctls, which |
| may trigger a soft lockup. |
| |
| An easy workaround is to replace snd_card_free() with |
| snd_card_free_when_closed(). This variant returns immediately while |
| the release of resources is done asynchronously by the card device |
| release at the last close. |
| |
| The loop of us122l->mmap_count check is dropped as well. The check is |
| useless for the asynchronous operation with *_when_closed(). |
| |
| The Linux kernel CVE team has assigned CVE-2024-56532 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.28 with commit 030a07e441296c372f946cd4065b5d831d8dc40c and fixed in 4.19.325 with commit 020cbc4d7414f0962004213e2b7bc5cc607e9ec7 |
| Issue introduced in 2.6.28 with commit 030a07e441296c372f946cd4065b5d831d8dc40c and fixed in 5.4.287 with commit 75f418b249d84021865eaa59515d3ed9b75ce4d6 |
| Issue introduced in 2.6.28 with commit 030a07e441296c372f946cd4065b5d831d8dc40c and fixed in 5.10.231 with commit bf0aa35a7cb8602cccf2387712114e836f65c154 |
| Issue introduced in 2.6.28 with commit 030a07e441296c372f946cd4065b5d831d8dc40c and fixed in 5.15.174 with commit 9a48bd2184b142c92a4e17eac074c61fcf975bc9 |
| Issue introduced in 2.6.28 with commit 030a07e441296c372f946cd4065b5d831d8dc40c and fixed in 6.1.120 with commit bc778ad3e495333eebda36fe91d5b2c93109cc16 |
| Issue introduced in 2.6.28 with commit 030a07e441296c372f946cd4065b5d831d8dc40c and fixed in 6.6.64 with commit 2938dd2648522336133c151dd67bb9bf01cbd390 |
| Issue introduced in 2.6.28 with commit 030a07e441296c372f946cd4065b5d831d8dc40c and fixed in 6.11.11 with commit 9b27924dc8d7f8a8c35e521287d4ccb9a006e597 |
| Issue introduced in 2.6.28 with commit 030a07e441296c372f946cd4065b5d831d8dc40c and fixed in 6.12.2 with commit 9d5c530e4d70f64b1114f2cc29ac690ba7ac4a38 |
| Issue introduced in 2.6.28 with commit 030a07e441296c372f946cd4065b5d831d8dc40c and fixed in 6.13 with commit b7df09bb348016943f56b09dcaafe221e3f73947 |
| |
| 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-2024-56532 |
| 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: |
| sound/usb/usx2y/us122l.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/020cbc4d7414f0962004213e2b7bc5cc607e9ec7 |
| https://git.kernel.org/stable/c/75f418b249d84021865eaa59515d3ed9b75ce4d6 |
| https://git.kernel.org/stable/c/bf0aa35a7cb8602cccf2387712114e836f65c154 |
| https://git.kernel.org/stable/c/9a48bd2184b142c92a4e17eac074c61fcf975bc9 |
| https://git.kernel.org/stable/c/bc778ad3e495333eebda36fe91d5b2c93109cc16 |
| https://git.kernel.org/stable/c/2938dd2648522336133c151dd67bb9bf01cbd390 |
| https://git.kernel.org/stable/c/9b27924dc8d7f8a8c35e521287d4ccb9a006e597 |
| https://git.kernel.org/stable/c/9d5c530e4d70f64b1114f2cc29ac690ba7ac4a38 |
| https://git.kernel.org/stable/c/b7df09bb348016943f56b09dcaafe221e3f73947 |
