| 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-2025-21687: vfio/platform: check the bounds of read/write syscalls |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| vfio/platform: check the bounds of read/write syscalls |
| |
| count and offset are passed from user space and not checked, only |
| offset is capped to 40 bits, which can be used to read/write out of |
| bounds of the device. |
| |
| The Linux kernel CVE team has assigned CVE-2025-21687 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.1 with commit 6e3f264560099869f68830cb14b3b3e71e5ac76a and fixed in 5.4.290 with commit f21636f24b6786c8b13f1af4319fa75ffcf17f38 |
| Issue introduced in 4.1 with commit 6e3f264560099869f68830cb14b3b3e71e5ac76a and fixed in 5.4.291 with commit 9377cdc118cf327248f1a9dde7b87de067681dc9 |
| Issue introduced in 4.1 with commit 6e3f264560099869f68830cb14b3b3e71e5ac76a and fixed in 5.10.234 with commit d19a8650fd3d7aed8d1af1d9a77f979a8430eba1 |
| Issue introduced in 4.1 with commit 6e3f264560099869f68830cb14b3b3e71e5ac76a and fixed in 5.10.235 with commit ed81d82bb6e9df3a137f2c343ed689e6c68268ef |
| Issue introduced in 4.1 with commit 6e3f264560099869f68830cb14b3b3e71e5ac76a and fixed in 5.15.178 with commit 92340e6c5122d823ad064984ef7513eba9204048 |
| Issue introduced in 4.1 with commit 6e3f264560099869f68830cb14b3b3e71e5ac76a and fixed in 5.15.179 with commit f65ce06387f8c1fb54bd59e18a8428248ec68eaf |
| Issue introduced in 4.1 with commit 6e3f264560099869f68830cb14b3b3e71e5ac76a and fixed in 6.1.128 with commit 6bcb8a5b70b80143db9bf12dfa7d53636f824d53 |
| Issue introduced in 4.1 with commit 6e3f264560099869f68830cb14b3b3e71e5ac76a and fixed in 6.1.129 with commit 1485932496a1b025235af8aa1e21988d6b7ccd54 |
| Issue introduced in 4.1 with commit 6e3f264560099869f68830cb14b3b3e71e5ac76a and fixed in 6.6.75 with commit c981c32c38af80737a2fedc16e270546d139ccdd |
| Issue introduced in 4.1 with commit 6e3f264560099869f68830cb14b3b3e71e5ac76a and fixed in 6.12.12 with commit a20fcaa230f7472456d12cf761ed13938e320ac3 |
| Issue introduced in 4.1 with commit 6e3f264560099869f68830cb14b3b3e71e5ac76a and fixed in 6.13.1 with commit 665cfd1083866f87301bbd232cb8ba48dcf4acce |
| Issue introduced in 4.1 with commit 6e3f264560099869f68830cb14b3b3e71e5ac76a and fixed in 6.14 with commit ce9ff21ea89d191e477a02ad7eabf4f996b80a69 |
| |
| 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-2025-21687 |
| 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/vfio/platform/vfio_platform_common.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/f21636f24b6786c8b13f1af4319fa75ffcf17f38 |
| https://git.kernel.org/stable/c/9377cdc118cf327248f1a9dde7b87de067681dc9 |
| https://git.kernel.org/stable/c/d19a8650fd3d7aed8d1af1d9a77f979a8430eba1 |
| https://git.kernel.org/stable/c/ed81d82bb6e9df3a137f2c343ed689e6c68268ef |
| https://git.kernel.org/stable/c/92340e6c5122d823ad064984ef7513eba9204048 |
| https://git.kernel.org/stable/c/f65ce06387f8c1fb54bd59e18a8428248ec68eaf |
| https://git.kernel.org/stable/c/6bcb8a5b70b80143db9bf12dfa7d53636f824d53 |
| https://git.kernel.org/stable/c/1485932496a1b025235af8aa1e21988d6b7ccd54 |
| https://git.kernel.org/stable/c/c981c32c38af80737a2fedc16e270546d139ccdd |
| https://git.kernel.org/stable/c/a20fcaa230f7472456d12cf761ed13938e320ac3 |
| https://git.kernel.org/stable/c/665cfd1083866f87301bbd232cb8ba48dcf4acce |
| https://git.kernel.org/stable/c/ce9ff21ea89d191e477a02ad7eabf4f996b80a69 |
