| 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-2025-21785: arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array |
| |
| The loop that detects/populates cache information already has a bounds |
| check on the array size but does not account for cache levels with |
| separate data/instructions cache. Fix this by incrementing the index |
| for any populated leaf (instead of any populated level). |
| |
| The Linux kernel CVE team has assigned CVE-2025-21785 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.0 with commit 5d425c18653731af62831d30a4fa023d532657a9 and fixed in 5.4.291 with commit 4371ac7b494e933fffee2bd6265d18d73c4f05aa |
| Issue introduced in 4.0 with commit 5d425c18653731af62831d30a4fa023d532657a9 and fixed in 5.10.235 with commit e4fde33107351ec33f1a64188612fbc6ca659284 |
| Issue introduced in 4.0 with commit 5d425c18653731af62831d30a4fa023d532657a9 and fixed in 5.15.179 with commit 88a3e6afaf002250220793df99404977d343db14 |
| Issue introduced in 4.0 with commit 5d425c18653731af62831d30a4fa023d532657a9 and fixed in 6.1.129 with commit 4ff25f0b18d1d0174c105e4620428bcdc1213860 |
| Issue introduced in 4.0 with commit 5d425c18653731af62831d30a4fa023d532657a9 and fixed in 6.6.79 with commit ab90894f33c15b14c1cee6959ab6c8dcb09127f8 |
| Issue introduced in 4.0 with commit 5d425c18653731af62831d30a4fa023d532657a9 and fixed in 6.12.16 with commit 715eb1af64779e1b1aa0a7b2ffb81414d9f708e5 |
| Issue introduced in 4.0 with commit 5d425c18653731af62831d30a4fa023d532657a9 and fixed in 6.13.4 with commit 67b99a2b5811df4294c2ad50f9bff3b6a08bd618 |
| Issue introduced in 4.0 with commit 5d425c18653731af62831d30a4fa023d532657a9 and fixed in 6.14 with commit 875d742cf5327c93cba1f11e12b08d3cce7a88d2 |
| |
| 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-2025-21785 |
| 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: |
| arch/arm64/kernel/cacheinfo.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/4371ac7b494e933fffee2bd6265d18d73c4f05aa |
| https://git.kernel.org/stable/c/e4fde33107351ec33f1a64188612fbc6ca659284 |
| https://git.kernel.org/stable/c/88a3e6afaf002250220793df99404977d343db14 |
| https://git.kernel.org/stable/c/4ff25f0b18d1d0174c105e4620428bcdc1213860 |
| https://git.kernel.org/stable/c/ab90894f33c15b14c1cee6959ab6c8dcb09127f8 |
| https://git.kernel.org/stable/c/715eb1af64779e1b1aa0a7b2ffb81414d9f708e5 |
| https://git.kernel.org/stable/c/67b99a2b5811df4294c2ad50f9bff3b6a08bd618 |
| https://git.kernel.org/stable/c/875d742cf5327c93cba1f11e12b08d3cce7a88d2 |
