| 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-2024-35962: netfilter: complete validation of user input |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| netfilter: complete validation of user input |
| |
| In my recent commit, I missed that do_replace() handlers |
| use copy_from_sockptr() (which I fixed), followed |
| by unsafe copy_from_sockptr_offset() calls. |
| |
| In all functions, we can perform the @optlen validation |
| before even calling xt_alloc_table_info() with the following |
| check: |
| |
| if ((u64)optlen < (u64)tmp.size + sizeof(tmp)) |
| return -EINVAL; |
| |
| The Linux kernel CVE team has assigned CVE-2024-35962 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.10.215 with commit 0f038242b77ddfc505bf4163d4904c1abd2e74d6 and fixed in 5.10.216 with commit cf4bc359b76144a3dd55d7c09464ef4c5f2b2b05 |
| Issue introduced in 5.15.154 with commit 440e948cf0eff32cfe322dcbca3f2525354b159b and fixed in 5.15.156 with commit 97dab36e57c64106e1c8ebd66cbf0d2d1e52d6b7 |
| Issue introduced in 6.1.85 with commit 18aae2cb87e5faa9c5bd865260ceadac60d5a6c5 and fixed in 6.1.87 with commit c760089aa98289b4b88a7ff5a62dd92845adf223 |
| Issue introduced in 6.6.26 with commit 81d51b9b7c95e791ba3c1a2dd77920a9d3b3f525 and fixed in 6.6.28 with commit 89242d9584c342cb83311b598d9e6b82572eadf8 |
| Issue introduced in 6.8.5 with commit 58f2bfb789e6bd3bc24a2c9c1580f3c67aec3018 and fixed in 6.8.7 with commit 562b7245131f6e9f1d280c8b5a8750f03edfc05c |
| |
| 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-2024-35962 |
| 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: |
| net/ipv4/netfilter/arp_tables.c |
| net/ipv4/netfilter/ip_tables.c |
| net/ipv6/netfilter/ip6_tables.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/cf4bc359b76144a3dd55d7c09464ef4c5f2b2b05 |
| https://git.kernel.org/stable/c/97dab36e57c64106e1c8ebd66cbf0d2d1e52d6b7 |
| https://git.kernel.org/stable/c/c760089aa98289b4b88a7ff5a62dd92845adf223 |
| https://git.kernel.org/stable/c/89242d9584c342cb83311b598d9e6b82572eadf8 |
| https://git.kernel.org/stable/c/562b7245131f6e9f1d280c8b5a8750f03edfc05c |
| https://git.kernel.org/stable/c/65acf6e0501ac8880a4f73980d01b5d27648b956 |
