| 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-2024-26977: pci_iounmap(): Fix MMIO mapping leak |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| pci_iounmap(): Fix MMIO mapping leak |
| |
| The #ifdef ARCH_HAS_GENERIC_IOPORT_MAP accidentally also guards iounmap(), |
| which means MMIO mappings are leaked. |
| |
| Move the guard so we call iounmap() for MMIO mappings. |
| |
| The Linux kernel CVE team has assigned CVE-2024-26977 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit 316e8d79a0959c302b0c462ab64b069599f10eef and fixed in 5.15.154 with commit 5e4b23e7a7b33a1e56bfa3e5598138a2234d55b6 |
| Issue introduced in 5.15 with commit 316e8d79a0959c302b0c462ab64b069599f10eef and fixed in 6.1.84 with commit 6d21d0356aa44157a62e39c0d1a13d4c69a8d0c8 |
| Issue introduced in 5.15 with commit 316e8d79a0959c302b0c462ab64b069599f10eef and fixed in 6.6.24 with commit b5d40f02e7222da032c2042aebcf2a07de9b342f |
| Issue introduced in 5.15 with commit 316e8d79a0959c302b0c462ab64b069599f10eef and fixed in 6.7.12 with commit f3749345a9b7295dd071d0ed589634cb46364f77 |
| Issue introduced in 5.15 with commit 316e8d79a0959c302b0c462ab64b069599f10eef and fixed in 6.8.3 with commit af280e137e273935f2e09f4d73169998298792ed |
| Issue introduced in 5.15 with commit 316e8d79a0959c302b0c462ab64b069599f10eef and fixed in 6.9 with commit 7626913652cc786c238e2dd7d8740b17d41b2637 |
| |
| 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-2024-26977 |
| 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: |
| lib/pci_iomap.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/5e4b23e7a7b33a1e56bfa3e5598138a2234d55b6 |
| https://git.kernel.org/stable/c/6d21d0356aa44157a62e39c0d1a13d4c69a8d0c8 |
| https://git.kernel.org/stable/c/b5d40f02e7222da032c2042aebcf2a07de9b342f |
| https://git.kernel.org/stable/c/f3749345a9b7295dd071d0ed589634cb46364f77 |
| https://git.kernel.org/stable/c/af280e137e273935f2e09f4d73169998298792ed |
| https://git.kernel.org/stable/c/7626913652cc786c238e2dd7d8740b17d41b2637 |
