| 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-2023-52834: atl1c: Work around the DMA RX overflow issue |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| atl1c: Work around the DMA RX overflow issue |
| |
| This is based on alx driver commit 881d0327db37 ("net: alx: Work around |
| the DMA RX overflow issue"). |
| |
| The alx and atl1c drivers had RX overflow error which was why a custom |
| allocator was created to avoid certain addresses. The simpler workaround |
| then created for alx driver, but not for atl1c due to lack of tester. |
| |
| Instead of using a custom allocator, check the allocated skb address and |
| use skb_reserve() to move away from problematic 0x...fc0 address. |
| |
| Tested on AR8131 on Acer 4540. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52834 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.15.140 with commit c29a89b23f67ee592f4dee61f9d7efbf86d60315 |
| Fixed in 6.1.64 with commit 57e44ff9c2c9747b2b1a53556810b0e5192655d6 |
| Fixed in 6.5.13 with commit 54a6152da4993ec8e4b53dc3cf577f5a2c829afa |
| Fixed in 6.6.3 with commit 32f08b7b430ee01ec47d730f961a3306c1c7b6fb |
| Fixed in 6.7 with commit 86565682e9053e5deb128193ea9e88531bbae9cf |
| |
| 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-2023-52834 |
| 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/atheros/atl1c/atl1c.h |
| drivers/net/ethernet/atheros/atl1c/atl1c_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/c29a89b23f67ee592f4dee61f9d7efbf86d60315 |
| https://git.kernel.org/stable/c/57e44ff9c2c9747b2b1a53556810b0e5192655d6 |
| https://git.kernel.org/stable/c/54a6152da4993ec8e4b53dc3cf577f5a2c829afa |
| https://git.kernel.org/stable/c/32f08b7b430ee01ec47d730f961a3306c1c7b6fb |
| https://git.kernel.org/stable/c/86565682e9053e5deb128193ea9e88531bbae9cf |
