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Message-ID: <2025050128-CVE-2025-23151-aba7@gregkh> Date: Thu, 1 May 2025 14:56:31 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2025-23151: bus: mhi: host: Fix race between unprepare and queue_buf From: Greg Kroah-Hartman <gregkh@...nel.org> 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 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-rc1 with commit 0686a818d77a431fc3ba2fab4b46bbb04e8c9380 Issue introduced in 5.15.149 with commit 176ed1727badd2fad2158e2b214dcbc24f4be7a1 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/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
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