| 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-2021-47033: mt76: mt7615: fix tx skb dma unmap |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| mt76: mt7615: fix tx skb dma unmap |
| |
| The first pointer in the txp needs to be unmapped as well, otherwise it will |
| leak DMA mapping entries |
| |
| The Linux kernel CVE team has assigned CVE-2021-47033 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.10 with commit 27d5c528a7ca08dcd44877fdd9fc08b76630bf77 and fixed in 5.10.37 with commit 75bc5f779a7664d1fc19cb915039439c6e58bb94 |
| Issue introduced in 5.10 with commit 27d5c528a7ca08dcd44877fdd9fc08b76630bf77 and fixed in 5.11.21 with commit a025277a80add18c33d01042525a74fe5b875f25 |
| Issue introduced in 5.10 with commit 27d5c528a7ca08dcd44877fdd9fc08b76630bf77 and fixed in 5.12.4 with commit 821ae236ccea989a1fcc6abfc4d5b74ad4ba39d2 |
| Issue introduced in 5.10 with commit 27d5c528a7ca08dcd44877fdd9fc08b76630bf77 and fixed in 5.13 with commit ebee7885bb12a8fe2c2f9bac87dbd87a05b645f9 |
| |
| 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-2021-47033 |
| 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/wireless/mediatek/mt76/mt7615/mac.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/75bc5f779a7664d1fc19cb915039439c6e58bb94 |
| https://git.kernel.org/stable/c/a025277a80add18c33d01042525a74fe5b875f25 |
| https://git.kernel.org/stable/c/821ae236ccea989a1fcc6abfc4d5b74ad4ba39d2 |
| https://git.kernel.org/stable/c/ebee7885bb12a8fe2c2f9bac87dbd87a05b645f9 |
