| 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-2022-49106: staging: vchiq_arm: Avoid NULL ptr deref in vchiq_dump_platform_instances |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| staging: vchiq_arm: Avoid NULL ptr deref in vchiq_dump_platform_instances |
| |
| vchiq_get_state() can return a NULL pointer. So handle this cases and |
| avoid a NULL pointer derefence in vchiq_dump_platform_instances. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49106 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.9 with commit 71bad7f086419dc674244b91ca35a12bfa4cb597 and fixed in 5.15.34 with commit 176df12b38c70b0a45e6392a0ee5bc83489dfc29 |
| Issue introduced in 4.9 with commit 71bad7f086419dc674244b91ca35a12bfa4cb597 and fixed in 5.16.20 with commit 4627250cabaa80278d3ab01ad107893cea83799f |
| Issue introduced in 4.9 with commit 71bad7f086419dc674244b91ca35a12bfa4cb597 and fixed in 5.17.3 with commit 51e5e5c34c22c0bfec0808d8c33e0b2fcf4c7c89 |
| Issue introduced in 4.9 with commit 71bad7f086419dc674244b91ca35a12bfa4cb597 and fixed in 5.18 with commit aa899e686d442c63d50f4d369cc02dbbf0941cb0 |
| |
| 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-2022-49106 |
| 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: |
| drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.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/176df12b38c70b0a45e6392a0ee5bc83489dfc29 |
| https://git.kernel.org/stable/c/4627250cabaa80278d3ab01ad107893cea83799f |
| https://git.kernel.org/stable/c/51e5e5c34c22c0bfec0808d8c33e0b2fcf4c7c89 |
| https://git.kernel.org/stable/c/aa899e686d442c63d50f4d369cc02dbbf0941cb0 |
