| 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-2024-42269: netfilter: iptables: Fix potential null-ptr-deref in ip6table_nat_table_init(). |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| netfilter: iptables: Fix potential null-ptr-deref in ip6table_nat_table_init(). |
| |
| ip6table_nat_table_init() accesses net->gen->ptr[ip6table_nat_net_ops.id], |
| but the function is exposed to user space before the entry is allocated |
| via register_pernet_subsys(). |
| |
| Let's call register_pernet_subsys() before xt_register_template(). |
| |
| The Linux kernel CVE team has assigned CVE-2024-42269 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 and fixed in 5.15.165 with commit 419ee6274c5153b89c4393c1946faa4c3cad4f9e |
| Issue introduced in 5.15 with commit fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 and fixed in 6.1.104 with commit 91b6df6611b7edb28676c4f63f90c56c30d3e601 |
| Issue introduced in 5.15 with commit fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 and fixed in 6.6.45 with commit e85b9b6a87be4cb3710082038b677e97f2389003 |
| Issue introduced in 5.15 with commit fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 and fixed in 6.10.4 with commit 87dba44e9471b79b255d0736858a897332db9226 |
| Issue introduced in 5.15 with commit fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 and fixed in 6.11 with commit c22921df777de5606f1047b1345b8d22ef1c0b34 |
| |
| 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-2024-42269 |
| 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/ipv6/netfilter/ip6table_nat.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/419ee6274c5153b89c4393c1946faa4c3cad4f9e |
| https://git.kernel.org/stable/c/91b6df6611b7edb28676c4f63f90c56c30d3e601 |
| https://git.kernel.org/stable/c/e85b9b6a87be4cb3710082038b677e97f2389003 |
| https://git.kernel.org/stable/c/87dba44e9471b79b255d0736858a897332db9226 |
| https://git.kernel.org/stable/c/c22921df777de5606f1047b1345b8d22ef1c0b34 |
