| 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-2024-35958: net: ena: Fix incorrect descriptor free behavior |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: ena: Fix incorrect descriptor free behavior |
| |
| ENA has two types of TX queues: |
| - queues which only process TX packets arriving from the network stack |
| - queues which only process TX packets forwarded to it by XDP_REDIRECT |
| or XDP_TX instructions |
| |
| The ena_free_tx_bufs() cycles through all descriptors in a TX queue |
| and unmaps + frees every descriptor that hasn't been acknowledged yet |
| by the device (uncompleted TX transactions). |
| The function assumes that the processed TX queue is necessarily from |
| the first category listed above and ends up using napi_consume_skb() |
| for descriptors belonging to an XDP specific queue. |
| |
| This patch solves a bug in which, in case of a VF reset, the |
| descriptors aren't freed correctly, leading to crashes. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35958 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.6 with commit 548c4940b9f1f527f81509468dd60b61418880b6 and fixed in 5.10.216 with commit b26aa765f7437e1bbe8db4c1641b12bd5dd378f0 |
| Issue introduced in 5.6 with commit 548c4940b9f1f527f81509468dd60b61418880b6 and fixed in 5.15.156 with commit fdfbf54d128ab6ab255db138488f9650485795a2 |
| Issue introduced in 5.6 with commit 548c4940b9f1f527f81509468dd60b61418880b6 and fixed in 6.1.87 with commit 19ff8fed3338898b70b2aad831386c78564912e1 |
| Issue introduced in 5.6 with commit 548c4940b9f1f527f81509468dd60b61418880b6 and fixed in 6.6.28 with commit 5c7f2240d9835a7823d87f7460d8eae9f4e504c7 |
| Issue introduced in 5.6 with commit 548c4940b9f1f527f81509468dd60b61418880b6 and fixed in 6.8.7 with commit c31baa07f01307b7ae05f3ce32b89d8e2ba0cc1d |
| Issue introduced in 5.6 with commit 548c4940b9f1f527f81509468dd60b61418880b6 and fixed in 6.9 with commit bf02d9fe00632d22fa91d34749c7aacf397b6cde |
| |
| 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-2024-35958 |
| 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/amazon/ena/ena_netdev.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/b26aa765f7437e1bbe8db4c1641b12bd5dd378f0 |
| https://git.kernel.org/stable/c/fdfbf54d128ab6ab255db138488f9650485795a2 |
| https://git.kernel.org/stable/c/19ff8fed3338898b70b2aad831386c78564912e1 |
| https://git.kernel.org/stable/c/5c7f2240d9835a7823d87f7460d8eae9f4e504c7 |
| https://git.kernel.org/stable/c/c31baa07f01307b7ae05f3ce32b89d8e2ba0cc1d |
| https://git.kernel.org/stable/c/bf02d9fe00632d22fa91d34749c7aacf397b6cde |
