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Message-ID: <2024022602-CVE-2019-25162-70ae@gregkh> Date: Mon, 26 Feb 2024 18:21:02 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2019-25162: i2c: Fix a potential use after free Description =========== In the Linux kernel, the following vulnerability has been resolved: i2c: Fix a potential use after free Free the adap structure only after we are done using it. This patch just moves the put_device() down a bit to avoid the use after free. [wsa: added comment to the code, added Fixes tag] The Linux kernel CVE team has assigned CVE-2019-25162 to this issue. Affected and fixed versions =========================== Issue introduced in 4.3 with commit 611e12ea0f12 and fixed in 4.14.291 with commit e6412ba3b650 Issue introduced in 4.3 with commit 611e12ea0f12 and fixed in 4.19.256 with commit 23a191b132cd Issue introduced in 4.3 with commit 611e12ea0f12 and fixed in 5.4.211 with commit 871a1e94929a Issue introduced in 4.3 with commit 611e12ea0f12 and fixed in 5.10.137 with commit 81cb31756888 Issue introduced in 4.3 with commit 611e12ea0f12 and fixed in 5.15.61 with commit 35927d7509ab Issue introduced in 4.3 with commit 611e12ea0f12 and fixed in 5.18.18 with commit e8e1a046cf87 Issue introduced in 4.3 with commit 611e12ea0f12 and fixed in 5.19.2 with commit 12b0606000d0 Issue introduced in 4.3 with commit 611e12ea0f12 and fixed in 6.0 with commit e4c72c06c367 Please see https://www.kernel.org or 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-2019-25162 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/i2c/i2c-core-base.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/e6412ba3b6508bdf9c074d310bf4144afa6aec1a https://git.kernel.org/stable/c/23a191b132cd87f746c62f3dc27da33683d85829 https://git.kernel.org/stable/c/871a1e94929a27bf6e2cd99523865c840bbc2d87 https://git.kernel.org/stable/c/81cb31756888bb062e92d2dca21cd629d77a46a9 https://git.kernel.org/stable/c/35927d7509ab9bf41896b7e44f639504eae08af7 https://git.kernel.org/stable/c/e8e1a046cf87c8b1363e5de835114f2779e2aaf4 https://git.kernel.org/stable/c/12b0606000d0828630c033bf0c74c748464fe87d https://git.kernel.org/stable/c/e4c72c06c367758a14f227c847f9d623f1994ecf
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