| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-23151: bus: mhi: host: Fix race between unprepare and queue_buf |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| bus: mhi: host: Fix race between unprepare and queue_buf |
| |
| A client driver may use mhi_unprepare_from_transfer() to quiesce |
| incoming data during the client driver's tear down. The client driver |
| might also be processing data at the same time, resulting in a call to |
| mhi_queue_buf() which will invoke mhi_gen_tre(). If mhi_gen_tre() runs |
| after mhi_unprepare_from_transfer() has torn down the channel, a panic |
| will occur due to an invalid dereference leading to a page fault. |
| |
| This occurs because mhi_gen_tre() does not verify the channel state |
| after locking it. Fix this by having mhi_gen_tre() confirm the channel |
| state is valid, or return error to avoid accessing deinitialized data. |
| |
| [mani: added stable tag] |
| |
| The Linux kernel CVE team has assigned CVE-2025-23151 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15.149 with commit 176ed1727badd2fad2158e2b214dcbc24f4be7a1 and fixed in 5.15.181 with commit 899d0353ea69681f474b6bc9de32c663b89672da |
| Issue introduced in 6.1.76 with commit 0b093176fd0967a5f56e2c86b0d48247f6c0fa0f and fixed in 6.1.135 with commit 3e7ecf181cbdde9753204ada3883ca1704d8702b |
| Issue introduced in 6.6.15 with commit ce16274a6b8d1483d0d8383272deb2bfd1b577ca and fixed in 6.6.88 with commit 5f084993c90d9d0b4a52a349ede5120f992a7ca1 |
| Issue introduced in 6.8 with commit b89b6a863dd53bc70d8e52d50f9cfaef8ef5e9c9 and fixed in 6.12.24 with commit a77955f7704b2a00385e232cbcc1cb06b5c7a425 |
| Issue introduced in 6.8 with commit b89b6a863dd53bc70d8e52d50f9cfaef8ef5e9c9 and fixed in 6.13.12 with commit 178e5657c8fd285125cc6743a81b513bce099760 |
| Issue introduced in 6.8 with commit b89b6a863dd53bc70d8e52d50f9cfaef8ef5e9c9 and fixed in 6.14.3 with commit ee1fce83ed56450087309b9b74ad9bcb2b010fa6 |
| Issue introduced in 6.8 with commit b89b6a863dd53bc70d8e52d50f9cfaef8ef5e9c9 and fixed in 6.15 with commit 0686a818d77a431fc3ba2fab4b46bbb04e8c9380 |
| Issue introduced in 6.7.3 with commit 642adb03541673f3897f64bbb62856ffd73807f5 |
| |
| 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-2025-23151 |
| 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/bus/mhi/host/main.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/899d0353ea69681f474b6bc9de32c663b89672da |
| https://git.kernel.org/stable/c/3e7ecf181cbdde9753204ada3883ca1704d8702b |
| https://git.kernel.org/stable/c/5f084993c90d9d0b4a52a349ede5120f992a7ca1 |
| https://git.kernel.org/stable/c/a77955f7704b2a00385e232cbcc1cb06b5c7a425 |
| https://git.kernel.org/stable/c/178e5657c8fd285125cc6743a81b513bce099760 |
| https://git.kernel.org/stable/c/ee1fce83ed56450087309b9b74ad9bcb2b010fa6 |
| https://git.kernel.org/stable/c/0686a818d77a431fc3ba2fab4b46bbb04e8c9380 |
