CVE-2022-50353

mmc: wmt-sdmmc: fix return value check of mmc_add_host()

State: Published
Severity: 5.5 Medium
Published: Sep 17, 2025
Updated: May 11, 2026
Reserved: Sep 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

mmc: wmt-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 goto error path which will call mmc_free_host(), besides, clk_disable_unprepare() also needs 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	3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before 70b0620afab3c69d95a7e2dd7ceff162a21c4009Affected 3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before ecd6f77af3478f5223aa4011642a891b7dc91228Affected 3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before c7a328cea791cc2769b6417943939420913b4a46Affected 3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before 9bedf64dda84b29151e41591d8ded9ff0e6d336aAffected 3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before 58c3a8d0f1abeb1ca5c2df948be58ad4f7bb6f67Affected 3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before b40ac3b696a9c84b36211ef0c3f5a422650c101bAffected 3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before eb7a2d516d4fbd165c07877a20feccb047342b1fAffected 3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before 29276d56f6ed138db0f38cd31aedc0b725c8c76cAffected
LinuxLinux	3.8Affected before 3.8Not 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

3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before 70b0620afab3c69d95a7e2dd7ceff162a21c4009Affected
3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before ecd6f77af3478f5223aa4011642a891b7dc91228Affected
3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before c7a328cea791cc2769b6417943939420913b4a46Affected
3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before 9bedf64dda84b29151e41591d8ded9ff0e6d336aAffected
3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before 58c3a8d0f1abeb1ca5c2df948be58ad4f7bb6f67Affected
3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before b40ac3b696a9c84b36211ef0c3f5a422650c101bAffected
3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before eb7a2d516d4fbd165c07877a20feccb047342b1fAffected
3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 to before 29276d56f6ed138db0f38cd31aedc0b725c8c76cAffected

LinuxLinux

3.8Affected
before 3.8Not 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

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