| 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-2024-53109: nommu: pass NULL argument to vma_iter_prealloc() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| nommu: pass NULL argument to vma_iter_prealloc() |
| |
| When deleting a vma entry from a maple tree, it has to pass NULL to |
| vma_iter_prealloc() in order to calculate internal state of the tree, but |
| it passed a wrong argument. As a result, nommu kernels crashed upon |
| accessing a vma iterator, such as acct_collect() reading the size of vma |
| entries after do_munmap(). |
| |
| This commit fixes this issue by passing a right argument to the |
| preallocation call. |
| |
| The Linux kernel CVE team has assigned CVE-2024-53109 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.6 with commit b5df09226450165c434084d346fcb6d4858b0d52 and fixed in 6.6.63 with commit 8bbf0ab631cdf1dade6745f137cff98751e6ced7 |
| Issue introduced in 6.6 with commit b5df09226450165c434084d346fcb6d4858b0d52 and fixed in 6.11.10 with commit aceaf33b7666b72dfb86e0aa977be81e3bcbc727 |
| Issue introduced in 6.6 with commit b5df09226450165c434084d346fcb6d4858b0d52 and fixed in 6.12 with commit 247d720b2c5d22f7281437fd6054a138256986ba |
| |
| 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-2024-53109 |
| 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: |
| mm/nommu.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/8bbf0ab631cdf1dade6745f137cff98751e6ced7 |
| https://git.kernel.org/stable/c/aceaf33b7666b72dfb86e0aa977be81e3bcbc727 |
| https://git.kernel.org/stable/c/247d720b2c5d22f7281437fd6054a138256986ba |
