| 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-2021-47311: net: qcom/emac: fix UAF in emac_remove |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: qcom/emac: fix UAF in emac_remove |
| |
| adpt is netdev private data and it cannot be |
| used after free_netdev() call. Using adpt after free_netdev() |
| can cause UAF bug. Fix it by moving free_netdev() at the end of the |
| function. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47311 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.9 with commit 54e19bc74f3380d414681762ceed9f7245bc6a6e and fixed in 4.9.277 with commit 4d04a42b926e682140776e54188f4a44f1f01a81 |
| Issue introduced in 4.9 with commit 54e19bc74f3380d414681762ceed9f7245bc6a6e and fixed in 4.14.241 with commit b1e091331920f8fbfc747dcbd16263fcd71abb2d |
| Issue introduced in 4.9 with commit 54e19bc74f3380d414681762ceed9f7245bc6a6e and fixed in 4.19.199 with commit 11e9d163d631198bb3eb41a677a61b499516c0f7 |
| Issue introduced in 4.9 with commit 54e19bc74f3380d414681762ceed9f7245bc6a6e and fixed in 5.4.135 with commit 2b70ca92847c619d6264c7372ef74fcbfd1e048c |
| Issue introduced in 4.9 with commit 54e19bc74f3380d414681762ceed9f7245bc6a6e and fixed in 5.10.53 with commit b560521eca03d0a2db6093a5a632cbdd0a0cf833 |
| Issue introduced in 4.9 with commit 54e19bc74f3380d414681762ceed9f7245bc6a6e and fixed in 5.13.5 with commit 8a225a6e07a57a1538d53637cb3d82bd3e477839 |
| Issue introduced in 4.9 with commit 54e19bc74f3380d414681762ceed9f7245bc6a6e and fixed in 5.14 with commit ad297cd2db8953e2202970e9504cab247b6c7cb4 |
| |
| 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-2021-47311 |
| 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/qualcomm/emac/emac.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/4d04a42b926e682140776e54188f4a44f1f01a81 |
| https://git.kernel.org/stable/c/b1e091331920f8fbfc747dcbd16263fcd71abb2d |
| https://git.kernel.org/stable/c/11e9d163d631198bb3eb41a677a61b499516c0f7 |
| https://git.kernel.org/stable/c/2b70ca92847c619d6264c7372ef74fcbfd1e048c |
| https://git.kernel.org/stable/c/b560521eca03d0a2db6093a5a632cbdd0a0cf833 |
| https://git.kernel.org/stable/c/8a225a6e07a57a1538d53637cb3d82bd3e477839 |
| https://git.kernel.org/stable/c/ad297cd2db8953e2202970e9504cab247b6c7cb4 |
