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Message-ID: <2025091640-CVE-2022-50347-33c3@gregkh> Date: Tue, 16 Sep 2025 18:11:43 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2022-50347: mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host() From: Greg Kroah-Hartman <gregkh@...nel.org> Description =========== In the Linux kernel, the following vulnerability has been resolved: mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, the memory that allocated in mmc_alloc_host() will be leaked and it will lead a kernel crash because of deleting not added device in the remove path. So fix this by checking the return value and calling mmc_free_host() in the error path, besides, led_classdev_unregister() and pm_runtime_disable() also need be called. The Linux kernel CVE team has assigned CVE-2022-50347 to this issue. Affected and fixed versions =========================== Issue introduced in 3.16 with commit c7f6558d84afe60016b8103c0737df6e376a1c2d and fixed in 4.9.337 with commit d7ad7278be401b09c9f9a9f522cf4c449c7fd489 Issue introduced in 3.16 with commit c7f6558d84afe60016b8103c0737df6e376a1c2d and fixed in 4.14.303 with commit e598c9683fe1cf97c2b11b800cc3cee072108220 Issue introduced in 3.16 with commit c7f6558d84afe60016b8103c0737df6e376a1c2d and fixed in 4.19.270 with commit 89303ddbb502c3bc8edbf864f9f85500c8fe07e9 Issue introduced in 3.16 with commit c7f6558d84afe60016b8103c0737df6e376a1c2d and fixed in 5.4.229 with commit 937112e991ed25d1727d878734adcbef3b900274 Issue introduced in 3.16 with commit c7f6558d84afe60016b8103c0737df6e376a1c2d and fixed in 5.10.163 with commit 7fa922c7a3dd623fd59f1af50e8896fd9ca7f654 Issue introduced in 3.16 with commit c7f6558d84afe60016b8103c0737df6e376a1c2d and fixed in 5.15.86 with commit df683201c7ffbd21a806a7cad657b661c5ebfb6f Issue introduced in 3.16 with commit c7f6558d84afe60016b8103c0737df6e376a1c2d and fixed in 6.0.16 with commit 1491667d5450778a265eddddd294219acfd648cb Issue introduced in 3.16 with commit c7f6558d84afe60016b8103c0737df6e376a1c2d and fixed in 6.1.2 with commit a522e26a20a43dcfbef9ee9f71ed803290e852b0 Issue introduced in 3.16 with commit c7f6558d84afe60016b8103c0737df6e376a1c2d and fixed in 6.2 with commit fc38a5a10e9e5a75eb9189854abeb8405b214cc9 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-2022-50347 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/mmc/host/rtsx_usb_sdmmc.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/d7ad7278be401b09c9f9a9f522cf4c449c7fd489 https://git.kernel.org/stable/c/e598c9683fe1cf97c2b11b800cc3cee072108220 https://git.kernel.org/stable/c/89303ddbb502c3bc8edbf864f9f85500c8fe07e9 https://git.kernel.org/stable/c/937112e991ed25d1727d878734adcbef3b900274 https://git.kernel.org/stable/c/7fa922c7a3dd623fd59f1af50e8896fd9ca7f654 https://git.kernel.org/stable/c/df683201c7ffbd21a806a7cad657b661c5ebfb6f https://git.kernel.org/stable/c/1491667d5450778a265eddddd294219acfd648cb https://git.kernel.org/stable/c/a522e26a20a43dcfbef9ee9f71ed803290e852b0 https://git.kernel.org/stable/c/fc38a5a10e9e5a75eb9189854abeb8405b214cc9
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