CVE-2022-50347

mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host()

State: Published
Severity: 5.5 Medium
Published: Sep 16, 2025
Updated: May 11, 2026
Reserved: Sep 16, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
LinuxLinux	c7f6558d84afe60016b8103c0737df6e376a1c2d to before d7ad7278be401b09c9f9a9f522cf4c449c7fd489Affected c7f6558d84afe60016b8103c0737df6e376a1c2d to before e598c9683fe1cf97c2b11b800cc3cee072108220Affected c7f6558d84afe60016b8103c0737df6e376a1c2d to before 89303ddbb502c3bc8edbf864f9f85500c8fe07e9Affected c7f6558d84afe60016b8103c0737df6e376a1c2d to before 937112e991ed25d1727d878734adcbef3b900274Affected c7f6558d84afe60016b8103c0737df6e376a1c2d to before 7fa922c7a3dd623fd59f1af50e8896fd9ca7f654Affected c7f6558d84afe60016b8103c0737df6e376a1c2d to before df683201c7ffbd21a806a7cad657b661c5ebfb6fAffected c7f6558d84afe60016b8103c0737df6e376a1c2d to before 1491667d5450778a265eddddd294219acfd648cbAffected c7f6558d84afe60016b8103c0737df6e376a1c2d to before a522e26a20a43dcfbef9ee9f71ed803290e852b0Affected c7f6558d84afe60016b8103c0737df6e376a1c2d to before fc38a5a10e9e5a75eb9189854abeb8405b214cc9Affected
LinuxLinux	3.16Affected before 3.16Not affected 4.9.337 through 4.9.Not affected 4.14.303 through 4.14.Not affected 4.19.270 through 4.19.Not affected 5.4.229 through 5.4.Not affected 5.10.163 through 5.10.Not affected 5.15.86 through 5.15.Not affected 6.0.16 through 6.0.Not affected 6.1.2 through 6.1.Not affected 6.2 and laterNot affected

Product

Versions

LinuxLinux

c7f6558d84afe60016b8103c0737df6e376a1c2d to before d7ad7278be401b09c9f9a9f522cf4c449c7fd489Affected
c7f6558d84afe60016b8103c0737df6e376a1c2d to before e598c9683fe1cf97c2b11b800cc3cee072108220Affected
c7f6558d84afe60016b8103c0737df6e376a1c2d to before 89303ddbb502c3bc8edbf864f9f85500c8fe07e9Affected
c7f6558d84afe60016b8103c0737df6e376a1c2d to before 937112e991ed25d1727d878734adcbef3b900274Affected
c7f6558d84afe60016b8103c0737df6e376a1c2d to before 7fa922c7a3dd623fd59f1af50e8896fd9ca7f654Affected
c7f6558d84afe60016b8103c0737df6e376a1c2d to before df683201c7ffbd21a806a7cad657b661c5ebfb6fAffected
c7f6558d84afe60016b8103c0737df6e376a1c2d to before 1491667d5450778a265eddddd294219acfd648cbAffected
c7f6558d84afe60016b8103c0737df6e376a1c2d to before a522e26a20a43dcfbef9ee9f71ed803290e852b0Affected
c7f6558d84afe60016b8103c0737df6e376a1c2d to before fc38a5a10e9e5a75eb9189854abeb8405b214cc9Affected

LinuxLinux

3.16Affected
before 3.16Not affected
4.9.337 through 4.9.*Not affected
4.14.303 through 4.14.*Not affected
4.19.270 through 4.19.*Not affected
5.4.229 through 5.4.*Not affected
5.10.163 through 5.10.*Not affected
5.15.86 through 5.15.*Not affected
6.0.16 through 6.0.*Not affected
6.1.2 through 6.1.*Not affected
6.2 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.