| 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-2024-27403: netfilter: nft_flow_offload: reset dst in route object after setting up flow |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| netfilter: nft_flow_offload: reset dst in route object after setting up flow |
| |
| dst is transferred to the flow object, route object does not own it |
| anymore. Reset dst in route object, otherwise if flow_offload_add() |
| fails, error path releases dst twice, leading to a refcount underflow. |
| |
| The Linux kernel CVE team has assigned CVE-2024-27403 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.16 with commit a3c90f7a2323b331ae816d5b0633e68148e25d04 and fixed in 5.15.150 with commit 4c167af9f6b5ae4a5dbc243d5983c295ccc2e43c |
| Issue introduced in 4.16 with commit a3c90f7a2323b331ae816d5b0633e68148e25d04 and fixed in 6.1.80 with commit 012df10717da02367aaf92c65f9c89db206c15f4 |
| Issue introduced in 4.16 with commit a3c90f7a2323b331ae816d5b0633e68148e25d04 and fixed in 6.6.19 with commit 558b00a30e05753a62ecc7e05e939ca8f0241148 |
| Issue introduced in 4.16 with commit a3c90f7a2323b331ae816d5b0633e68148e25d04 and fixed in 6.7.7 with commit 670548c8db44d76e40e1dfc06812bca36a61e9ae |
| Issue introduced in 4.16 with commit a3c90f7a2323b331ae816d5b0633e68148e25d04 and fixed in 6.8 with commit 9e0f0430389be7696396c62f037be4bf72cf93e3 |
| |
| 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-2024-27403 |
| 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: |
| include/net/netfilter/nf_flow_table.h |
| net/netfilter/nf_flow_table_core.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/4c167af9f6b5ae4a5dbc243d5983c295ccc2e43c |
| https://git.kernel.org/stable/c/012df10717da02367aaf92c65f9c89db206c15f4 |
| https://git.kernel.org/stable/c/558b00a30e05753a62ecc7e05e939ca8f0241148 |
| https://git.kernel.org/stable/c/670548c8db44d76e40e1dfc06812bca36a61e9ae |
| https://git.kernel.org/stable/c/9e0f0430389be7696396c62f037be4bf72cf93e3 |
