| 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-2022-49903: ipv6: fix WARNING in ip6_route_net_exit_late() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ipv6: fix WARNING in ip6_route_net_exit_late() |
| |
| During the initialization of ip6_route_net_init_late(), if file |
| ipv6_route or rt6_stats fails to be created, the initialization is |
| successful by default. Therefore, the ipv6_route or rt6_stats file |
| doesn't be found during the remove in ip6_route_net_exit_late(). It |
| will cause WRNING. |
| |
| The following is the stack information: |
| name 'rt6_stats' |
| WARNING: CPU: 0 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 |
| PKRU: 55555554 |
| Call Trace: |
| <TASK> |
| ops_exit_list+0xb0/0x170 |
| 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-2022-49903 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.26 with commit cdb1876192dbe680b3ac955717fdf7f863c1762d and fixed in 4.19.265 with commit 83fbf246ced54dadd7b9adc2a16efeff30ba944d |
| Issue introduced in 2.6.26 with commit cdb1876192dbe680b3ac955717fdf7f863c1762d and fixed in 5.4.224 with commit 381453770f731f0f43616a1cd4c759b7807a1517 |
| Issue introduced in 2.6.26 with commit cdb1876192dbe680b3ac955717fdf7f863c1762d and fixed in 5.10.154 with commit 5dbb47ee89762da433cd8458788d7640c85f1a07 |
| Issue introduced in 2.6.26 with commit cdb1876192dbe680b3ac955717fdf7f863c1762d and fixed in 5.15.78 with commit 0ed71af4d017d2bd2cbb8f7254f613a4914def26 |
| Issue introduced in 2.6.26 with commit cdb1876192dbe680b3ac955717fdf7f863c1762d and fixed in 6.0.8 with commit 080589287127838046077904f34d5054ea0f895c |
| Issue introduced in 2.6.26 with commit cdb1876192dbe680b3ac955717fdf7f863c1762d and fixed in 6.1 with commit 768b3c745fe5789f2430bdab02f35a9ad1148d97 |
| |
| 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-2022-49903 |
| 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/route.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/83fbf246ced54dadd7b9adc2a16efeff30ba944d |
| https://git.kernel.org/stable/c/381453770f731f0f43616a1cd4c759b7807a1517 |
| https://git.kernel.org/stable/c/5dbb47ee89762da433cd8458788d7640c85f1a07 |
| https://git.kernel.org/stable/c/0ed71af4d017d2bd2cbb8f7254f613a4914def26 |
| https://git.kernel.org/stable/c/080589287127838046077904f34d5054ea0f895c |
| https://git.kernel.org/stable/c/768b3c745fe5789f2430bdab02f35a9ad1148d97 |
