CVE-2022-50353

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 < 70b0620afab3c69d95a7e2dd7ceff162a21c4009affected
LinuxLinux3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 < ecd6f77af3478f5223aa4011642a891b7dc91228affected
LinuxLinux3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 < c7a328cea791cc2769b6417943939420913b4a46affected
LinuxLinux3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 < 9bedf64dda84b29151e41591d8ded9ff0e6d336aaffected
LinuxLinux3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 < 58c3a8d0f1abeb1ca5c2df948be58ad4f7bb6f67affected
LinuxLinux3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 < b40ac3b696a9c84b36211ef0c3f5a422650c101baffected
LinuxLinux3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 < eb7a2d516d4fbd165c07877a20feccb047342b1faffected
LinuxLinux3a96dff0f828ae9dfb43efd49a9b67a74c6dc360 < 29276d56f6ed138db0f38cd31aedc0b725c8c76caffected
LinuxLinux3.8affected
LinuxLinux0 < 3.8unaffected
LinuxLinux4.14.303 <= 4.14.*unaffected
LinuxLinux4.19.270 <= 4.19.*unaffected
LinuxLinux5.4.229 <= 5.4.*unaffected
LinuxLinux5.10.163 <= 5.10.*unaffected
LinuxLinux5.15.86 <= 5.15.*unaffected
LinuxLinux6.0.16 <= 6.0.*unaffected
LinuxLinux6.1.2 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References