| 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-2024-44995: net: hns3: fix a deadlock problem when config TC during resetting |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: hns3: fix a deadlock problem when config TC during resetting |
| |
| When config TC during the reset process, may cause a deadlock, the flow is |
| as below: |
| pf reset start |
| │ |
| ▼ |
| ...... |
| setup tc │ |
| │ ▼ |
| ▼ DOWN: napi_disable() |
| napi_disable()(skip) │ |
| │ │ |
| ▼ ▼ |
| ...... ...... |
| │ │ |
| ▼ │ |
| napi_enable() │ |
| ▼ |
| UINIT: netif_napi_del() |
| │ |
| ▼ |
| ...... |
| │ |
| ▼ |
| INIT: netif_napi_add() |
| │ |
| ▼ |
| ...... global reset start |
| │ │ |
| ▼ ▼ |
| UP: napi_enable()(skip) ...... |
| │ │ |
| ▼ ▼ |
| ...... napi_disable() |
| |
| In reset process, the driver will DOWN the port and then UINIT, in this |
| case, the setup tc process will UP the port before UINIT, so cause the |
| problem. Adds a DOWN process in UINIT to fix it. |
| |
| The Linux kernel CVE team has assigned CVE-2024-44995 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.15 with commit bb6b94a896d4dd4dcdeccca87c3fd22521c652c0 and fixed in 5.4.283 with commit 67492d4d105c0a6321b00c393eec96b9a7a97a16 |
| Issue introduced in 4.15 with commit bb6b94a896d4dd4dcdeccca87c3fd22521c652c0 and fixed in 5.10.225 with commit fc250eca15bde34c4c8f806b9d88f55bd56a992c |
| Issue introduced in 4.15 with commit bb6b94a896d4dd4dcdeccca87c3fd22521c652c0 and fixed in 5.15.166 with commit 195918217448a6bb7f929d6a2ffffce9f1ece1cc |
| Issue introduced in 4.15 with commit bb6b94a896d4dd4dcdeccca87c3fd22521c652c0 and fixed in 6.1.107 with commit 6ae2b7d63cd056f363045eb65409143e16f23ae8 |
| Issue introduced in 4.15 with commit bb6b94a896d4dd4dcdeccca87c3fd22521c652c0 and fixed in 6.6.48 with commit fa1d4de7265c370e673583ac8d1bd17d21826cd9 |
| Issue introduced in 4.15 with commit bb6b94a896d4dd4dcdeccca87c3fd22521c652c0 and fixed in 6.10.7 with commit de37408d5c26fc4a296a28a0c96dcb814219bfa1 |
| Issue introduced in 4.15 with commit bb6b94a896d4dd4dcdeccca87c3fd22521c652c0 and fixed in 6.11 with commit be5e816d00a506719e9dbb1a9c861c5ced30a109 |
| |
| 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-2024-44995 |
| 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/net/ethernet/hisilicon/hns3/hns3_enet.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/67492d4d105c0a6321b00c393eec96b9a7a97a16 |
| https://git.kernel.org/stable/c/fc250eca15bde34c4c8f806b9d88f55bd56a992c |
| https://git.kernel.org/stable/c/195918217448a6bb7f929d6a2ffffce9f1ece1cc |
| https://git.kernel.org/stable/c/6ae2b7d63cd056f363045eb65409143e16f23ae8 |
| https://git.kernel.org/stable/c/fa1d4de7265c370e673583ac8d1bd17d21826cd9 |
| https://git.kernel.org/stable/c/de37408d5c26fc4a296a28a0c96dcb814219bfa1 |
| https://git.kernel.org/stable/c/be5e816d00a506719e9dbb1a9c861c5ced30a109 |
