| 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-2021-47464: audit: fix possible null-pointer dereference in audit_filter_rules |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| audit: fix possible null-pointer dereference in audit_filter_rules |
| |
| Fix possible null-pointer dereference in audit_filter_rules. |
| |
| audit_filter_rules() error: we previously assumed 'ctx' could be null |
| |
| The Linux kernel CVE team has assigned CVE-2021-47464 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.3 with commit bf361231c295d92a28ca283ea713f56e93e55796 and fixed in 5.4.156 with commit d6f451f1f60c58d73038c7c3177066f8f084e2a2 |
| Issue introduced in 5.3 with commit bf361231c295d92a28ca283ea713f56e93e55796 and fixed in 5.10.76 with commit 16802fa4c33eb1a8efb23f1e93365190e4047d05 |
| Issue introduced in 5.3 with commit bf361231c295d92a28ca283ea713f56e93e55796 and fixed in 5.14.15 with commit 4e9e46a700201b4c85081fd478c99c692a9aaa0d |
| Issue introduced in 5.3 with commit bf361231c295d92a28ca283ea713f56e93e55796 and fixed in 5.15 with commit 6e3ee990c90494561921c756481d0e2125d8b895 |
| |
| 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-2021-47464 |
| 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: |
| kernel/auditsc.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/d6f451f1f60c58d73038c7c3177066f8f084e2a2 |
| https://git.kernel.org/stable/c/16802fa4c33eb1a8efb23f1e93365190e4047d05 |
| https://git.kernel.org/stable/c/4e9e46a700201b4c85081fd478c99c692a9aaa0d |
| https://git.kernel.org/stable/c/6e3ee990c90494561921c756481d0e2125d8b895 |
