CVE-2022-50251

mmc: vub300: fix return value check of mmc_add_host()

State: Published
Severity: Not scored
Published: Sep 15, 2025
Updated: May 11, 2026
Reserved: Sep 15, 2025

Description

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

mmc: vub300: 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, the timer added before mmc_add_host() needs be del.

And this patch fixes another missing call mmc_free_host() if usb_control_msg() fails.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before 41ed46bdbd2878cd6567abe0974a445f8b1b8ec8Affected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before 25f05d762ca5e1c685002a53dd44f68e78ca3febAffected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before a46e681151bbdacdf6b89ee8c4e5bad0555142bbAffected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before 3b29f8769d32016b2d89183db4d80c7a71b7e35eAffected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before 3049a3b927a40d89d4582ff1033cd7953be773c7Affected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before afc898019e7bf18c5eb7a0ac19852fcb1b341b3cAffected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before c9e85979b59cb86f0a15defa8199d740e2b36b90Affected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before 2044b2ea77945f372ef161d1bbf814e471767ff2Affected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before 0613ad2401f88bdeae5594c30afe318e93b14676Affected
LinuxLinux	3.0Affected before 3.0Not 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

88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before 41ed46bdbd2878cd6567abe0974a445f8b1b8ec8Affected
88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before 25f05d762ca5e1c685002a53dd44f68e78ca3febAffected
88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before a46e681151bbdacdf6b89ee8c4e5bad0555142bbAffected
88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before 3b29f8769d32016b2d89183db4d80c7a71b7e35eAffected
88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before 3049a3b927a40d89d4582ff1033cd7953be773c7Affected
88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before afc898019e7bf18c5eb7a0ac19852fcb1b341b3cAffected
88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before c9e85979b59cb86f0a15defa8199d740e2b36b90Affected
88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before 2044b2ea77945f372ef161d1bbf814e471767ff2Affected
88095e7b473a3d9ec3b9c60429576e9cbd327c89 to before 0613ad2401f88bdeae5594c30afe318e93b14676Affected

LinuxLinux

3.0Affected
before 3.0Not 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

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