| 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-2024-27037: clk: zynq: Prevent null pointer dereference caused by kmalloc failure |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| clk: zynq: Prevent null pointer dereference caused by kmalloc failure |
| |
| The kmalloc() in zynq_clk_setup() will return null if the |
| physical memory has run out. As a result, if we use snprintf() |
| to write data to the null address, the null pointer dereference |
| bug will happen. |
| |
| This patch uses a stack variable to replace the kmalloc(). |
| |
| The Linux kernel CVE team has assigned CVE-2024-27037 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.11 with commit 0ee52b157b8ed88550ddd6291e54bb4bfabde364 and fixed in 5.15.153 with commit 01511ac7be8e45f80e637f6bf61af2d3d2dee9db |
| Issue introduced in 3.11 with commit 0ee52b157b8ed88550ddd6291e54bb4bfabde364 and fixed in 6.1.83 with commit 8c4889a9ea861d7be37463c10846eb75e1b49c9d |
| Issue introduced in 3.11 with commit 0ee52b157b8ed88550ddd6291e54bb4bfabde364 and fixed in 6.6.23 with commit 0801c893fd48cdba66a3c8f44c3fe43cc67d3b85 |
| Issue introduced in 3.11 with commit 0ee52b157b8ed88550ddd6291e54bb4bfabde364 and fixed in 6.7.11 with commit ca976c6a592f789700200069ef9052493c0b73d8 |
| Issue introduced in 3.11 with commit 0ee52b157b8ed88550ddd6291e54bb4bfabde364 and fixed in 6.8.2 with commit 58a946ab43501f2eba058d24d96af0ad1122475b |
| Issue introduced in 3.11 with commit 0ee52b157b8ed88550ddd6291e54bb4bfabde364 and fixed in 6.9 with commit 7938e9ce39d6779d2f85d822cc930f73420e54a6 |
| |
| 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-2024-27037 |
| 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/clk/zynq/clkc.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/01511ac7be8e45f80e637f6bf61af2d3d2dee9db |
| https://git.kernel.org/stable/c/8c4889a9ea861d7be37463c10846eb75e1b49c9d |
| https://git.kernel.org/stable/c/0801c893fd48cdba66a3c8f44c3fe43cc67d3b85 |
| https://git.kernel.org/stable/c/ca976c6a592f789700200069ef9052493c0b73d8 |
| https://git.kernel.org/stable/c/58a946ab43501f2eba058d24d96af0ad1122475b |
| https://git.kernel.org/stable/c/7938e9ce39d6779d2f85d822cc930f73420e54a6 |
