| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-49918: ipvs: fix WARNING in __ip_vs_cleanup_batch() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ipvs: fix WARNING in __ip_vs_cleanup_batch() |
| |
| During the initialization of ip_vs_conn_net_init(), if file ip_vs_conn |
| or ip_vs_conn_sync fails to be created, the initialization is successful |
| by default. Therefore, the ip_vs_conn or ip_vs_conn_sync file doesn't |
| be found during the remove. |
| |
| The following is the stack information: |
| name 'ip_vs_conn_sync' |
| WARNING: CPU: 3 PID: 9 at fs/proc/generic.c:712 |
| remove_proc_entry+0x389/0x460 |
| Modules linked in: |
| Workqueue: netns cleanup_net |
| RIP: 0010:remove_proc_entry+0x389/0x460 |
| Call Trace: |
| <TASK> |
| __ip_vs_cleanup_batch+0x7d/0x120 |
| ops_exit_list+0x125/0x170 |
| cleanup_net+0x4ea/0xb00 |
| process_one_work+0x9bf/0x1710 |
| worker_thread+0x665/0x1080 |
| kthread+0x2e4/0x3a0 |
| ret_from_fork+0x1f/0x30 |
| </TASK> |
| |
| The Linux kernel CVE team has assigned CVE-2022-49918 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.39 with commit 61b1ab4583e275af216c8454b9256de680499b19 and fixed in 4.19.265 with commit f08ee2aa24c076f81d84e26e213d8c6f4efd9f50 |
| Issue introduced in 2.6.39 with commit 61b1ab4583e275af216c8454b9256de680499b19 and fixed in 5.4.224 with commit 7effc4ce3d1434ce6ff286866585a6e905fdbfc1 |
| Issue introduced in 2.6.39 with commit 61b1ab4583e275af216c8454b9256de680499b19 and fixed in 5.10.154 with commit 931f56d59c854263b32075bfac56fdb3b1598d1b |
| Issue introduced in 2.6.39 with commit 61b1ab4583e275af216c8454b9256de680499b19 and fixed in 5.15.78 with commit 5ee2d6b726b0ce339e36569e5849692f4cf4595e |
| Issue introduced in 2.6.39 with commit 61b1ab4583e275af216c8454b9256de680499b19 and fixed in 6.0.8 with commit e724220b826e008764309d2a1f55a9434a4e1530 |
| Issue introduced in 2.6.39 with commit 61b1ab4583e275af216c8454b9256de680499b19 and fixed in 6.1 with commit 3d00c6a0da8ddcf75213e004765e4a42acc71d5d |
| |
| 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-2022-49918 |
| 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/netfilter/ipvs/ip_vs_conn.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/f08ee2aa24c076f81d84e26e213d8c6f4efd9f50 |
| https://git.kernel.org/stable/c/7effc4ce3d1434ce6ff286866585a6e905fdbfc1 |
| https://git.kernel.org/stable/c/931f56d59c854263b32075bfac56fdb3b1598d1b |
| https://git.kernel.org/stable/c/5ee2d6b726b0ce339e36569e5849692f4cf4595e |
| https://git.kernel.org/stable/c/e724220b826e008764309d2a1f55a9434a4e1530 |
| https://git.kernel.org/stable/c/3d00c6a0da8ddcf75213e004765e4a42acc71d5d |
