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Message-ID: <2025072509-CVE-2025-38395-3a19@gregkh> Date: Fri, 25 Jul 2025 14:55:26 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2025-38395: regulator: gpio: Fix the out-of-bounds access to drvdata::gpiods From: Greg Kroah-Hartman <gregkh@...nel.org> Description =========== In the Linux kernel, the following vulnerability has been resolved: regulator: gpio: Fix the out-of-bounds access to drvdata::gpiods drvdata::gpiods is supposed to hold an array of 'gpio_desc' pointers. But the memory is allocated for only one pointer. This will lead to out-of-bounds access later in the code if 'config::ngpios' is > 1. So fix the code to allocate enough memory to hold 'config::ngpios' of GPIO descriptors. While at it, also move the check for memory allocation failure to be below the allocation to make it more readable. The Linux kernel CVE team has assigned CVE-2025-38395 to this issue. Affected and fixed versions =========================== Issue introduced in 5.1 with commit d6cd33ad71029a3f77ba1686caf55d4dea58d916 and fixed in 5.4.296 with commit a3cd5ae7befbac849e0e0529c94ca04e8093cfd2 Issue introduced in 5.1 with commit d6cd33ad71029a3f77ba1686caf55d4dea58d916 and fixed in 5.10.240 with commit 9fe71972869faed1f8f9b3beb9040f9c1b300c79 Issue introduced in 5.1 with commit d6cd33ad71029a3f77ba1686caf55d4dea58d916 and fixed in 5.15.187 with commit 56738cbac3bbb1d39a71a07f57484dec1db8b239 Issue introduced in 5.1 with commit d6cd33ad71029a3f77ba1686caf55d4dea58d916 and fixed in 6.1.144 with commit a1e12fac214d4f49fcb186dbdf9c5592e7fa0a7a Issue introduced in 5.1 with commit d6cd33ad71029a3f77ba1686caf55d4dea58d916 and fixed in 6.6.97 with commit 24418bc77a66cb5be9f5a837431ba3674ed8b52f Issue introduced in 5.1 with commit d6cd33ad71029a3f77ba1686caf55d4dea58d916 and fixed in 6.12.37 with commit e4d19e5d71b217940e33f2ef6c6962b7b68c5606 Issue introduced in 5.1 with commit d6cd33ad71029a3f77ba1686caf55d4dea58d916 and fixed in 6.15.6 with commit 3830ab97cda9599872625cc0dc7b00160193634f Issue introduced in 5.1 with commit d6cd33ad71029a3f77ba1686caf55d4dea58d916 and fixed in 6.16-rc5 with commit c9764fd88bc744592b0604ccb6b6fc1a5f76b4e3 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-2025-38395 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/regulator/gpio-regulator.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/a3cd5ae7befbac849e0e0529c94ca04e8093cfd2 https://git.kernel.org/stable/c/9fe71972869faed1f8f9b3beb9040f9c1b300c79 https://git.kernel.org/stable/c/56738cbac3bbb1d39a71a07f57484dec1db8b239 https://git.kernel.org/stable/c/a1e12fac214d4f49fcb186dbdf9c5592e7fa0a7a https://git.kernel.org/stable/c/24418bc77a66cb5be9f5a837431ba3674ed8b52f https://git.kernel.org/stable/c/e4d19e5d71b217940e33f2ef6c6962b7b68c5606 https://git.kernel.org/stable/c/3830ab97cda9599872625cc0dc7b00160193634f https://git.kernel.org/stable/c/c9764fd88bc744592b0604ccb6b6fc1a5f76b4e3
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