| 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-2025-21802: net: hns3: fix oops when unload drivers paralleling |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: hns3: fix oops when unload drivers paralleling |
| |
| When unload hclge driver, it tries to disable sriov first for each |
| ae_dev node from hnae3_ae_dev_list. If user unloads hns3 driver at |
| the time, because it removes all the ae_dev nodes, and it may cause |
| oops. |
| |
| But we can't simply use hnae3_common_lock for this. Because in the |
| process flow of pci_disable_sriov(), it will trigger the remove flow |
| of VF, which will also take hnae3_common_lock. |
| |
| To fixes it, introduce a new mutex to protect the unload process. |
| |
| The Linux kernel CVE team has assigned CVE-2025-21802 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.10.76 with commit d36b15e3e7b5937cb1f6ac590a85facc3a320642 and fixed in 5.10.235 with commit 622d92a67656e5c4d2d6ccac02d688ed995418c6 |
| Issue introduced in 5.15 with commit 0dd8a25f355b4df2d41c08df1716340854c7d4c5 and fixed in 5.15.179 with commit 8c640dd3d900cc8988a39c007591f1deee776df4 |
| Issue introduced in 5.15 with commit 0dd8a25f355b4df2d41c08df1716340854c7d4c5 and fixed in 6.1.129 with commit e876522659012ef2e73834a0b9f1cbe3f74d5fad |
| Issue introduced in 5.15 with commit 0dd8a25f355b4df2d41c08df1716340854c7d4c5 and fixed in 6.6.76 with commit b5a8bc47aa0a4aa8bca5466dfa2d12dbb5b3cd0c |
| Issue introduced in 5.15 with commit 0dd8a25f355b4df2d41c08df1716340854c7d4c5 and fixed in 6.12.13 with commit 82736bb83fb0221319c85c2e9917d0189cd84e1e |
| Issue introduced in 5.15 with commit 0dd8a25f355b4df2d41c08df1716340854c7d4c5 and fixed in 6.13.2 with commit cafe9a27e22736d4a01b3933e36225f9857c7988 |
| Issue introduced in 5.15 with commit 0dd8a25f355b4df2d41c08df1716340854c7d4c5 and fixed in 6.14 with commit 92e5995773774a3e70257e9c95ea03518268bea5 |
| Issue introduced in 4.19.214 with commit b06ad258e01389ca3ff13bc180f3fcd6a608f1cd |
| Issue introduced in 5.4.156 with commit c4b64011e458aa2b246cd4e42012cfd83d2d9a5c |
| Issue introduced in 5.14.15 with commit 9b5a29f0acefa3eb1dbe2fa302b393eeff64d933 |
| |
| 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-2025-21802 |
| 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/hnae3.c |
| drivers/net/ethernet/hisilicon/hns3/hnae3.h |
| drivers/net/ethernet/hisilicon/hns3/hns3_enet.c |
| drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c |
| drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.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/622d92a67656e5c4d2d6ccac02d688ed995418c6 |
| https://git.kernel.org/stable/c/8c640dd3d900cc8988a39c007591f1deee776df4 |
| https://git.kernel.org/stable/c/e876522659012ef2e73834a0b9f1cbe3f74d5fad |
| https://git.kernel.org/stable/c/b5a8bc47aa0a4aa8bca5466dfa2d12dbb5b3cd0c |
| https://git.kernel.org/stable/c/82736bb83fb0221319c85c2e9917d0189cd84e1e |
| https://git.kernel.org/stable/c/cafe9a27e22736d4a01b3933e36225f9857c7988 |
| https://git.kernel.org/stable/c/92e5995773774a3e70257e9c95ea03518268bea5 |
