| 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-2024-56745: PCI: Fix reset_method_store() memory leak |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| PCI: Fix reset_method_store() memory leak |
| |
| In reset_method_store(), a string is allocated via kstrndup() and assigned |
| to the local "options". options is then used in with strsep() to find |
| spaces: |
| |
| while ((name = strsep(&options, " ")) != NULL) { |
| |
| If there are no remaining spaces, then options is set to NULL by strsep(), |
| so the subsequent kfree(options) doesn't free the memory allocated via |
| kstrndup(). |
| |
| Fix by using a separate tmp_options to iterate with strsep() so options is |
| preserved. |
| |
| The Linux kernel CVE team has assigned CVE-2024-56745 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit d88f521da3efd698e36d0d504a2abba6ac4f5ef8 and fixed in 5.15.174 with commit 403efb4457c0c8f8f51e904cc57d39193780c6bd |
| Issue introduced in 5.15 with commit d88f521da3efd698e36d0d504a2abba6ac4f5ef8 and fixed in 6.1.120 with commit 931d07ccffcc3614f20aaf602b31e89754e21c59 |
| Issue introduced in 5.15 with commit d88f521da3efd698e36d0d504a2abba6ac4f5ef8 and fixed in 6.6.64 with commit 8e098baf6bc3f3a6aefc383509aba07e202f7ee0 |
| Issue introduced in 5.15 with commit d88f521da3efd698e36d0d504a2abba6ac4f5ef8 and fixed in 6.11.11 with commit 543d0eb40e45c6a51f1bff02f417b602e54472d5 |
| Issue introduced in 5.15 with commit d88f521da3efd698e36d0d504a2abba6ac4f5ef8 and fixed in 6.12.2 with commit fe6fae61f3b993160aef5fe2b7141a83872c144f |
| Issue introduced in 5.15 with commit d88f521da3efd698e36d0d504a2abba6ac4f5ef8 and fixed in 6.13 with commit 2985b1844f3f3447f2d938eff1ef6762592065a5 |
| |
| 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-2024-56745 |
| 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/pci/pci.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/403efb4457c0c8f8f51e904cc57d39193780c6bd |
| https://git.kernel.org/stable/c/931d07ccffcc3614f20aaf602b31e89754e21c59 |
| https://git.kernel.org/stable/c/8e098baf6bc3f3a6aefc383509aba07e202f7ee0 |
| https://git.kernel.org/stable/c/543d0eb40e45c6a51f1bff02f417b602e54472d5 |
| https://git.kernel.org/stable/c/fe6fae61f3b993160aef5fe2b7141a83872c144f |
| https://git.kernel.org/stable/c/2985b1844f3f3447f2d938eff1ef6762592065a5 |
