CVE-2022-49258

Summary

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

crypto: ccree - Fix use after free in cc_cipher_exit()

kfree_sensitive(ctx_p->user.key) will free the ctx_p->user.key. But ctx_p->user.key is still used in the next line, which will lead to a use after free.

We can call kfree_sensitive() after dev_dbg() to avoid the uaf.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux63ee04c8b491ee148489347e7da9fbfd982ca2bb < c93017c8d5ebf55a4e453ac7c84cc84cf92ab570affected
LinuxLinux63ee04c8b491ee148489347e7da9fbfd982ca2bb < 335bf1fc74f775a8255257aa3e33763f2257b676affected
LinuxLinux63ee04c8b491ee148489347e7da9fbfd982ca2bb < 25c358efee5153dfd240d4e0d3169d5bebe9cacdaffected
LinuxLinux63ee04c8b491ee148489347e7da9fbfd982ca2bb < cffb5382bd8d3cf21b874ab5b84bf7618932286baffected
LinuxLinux63ee04c8b491ee148489347e7da9fbfd982ca2bb < 3d950c34074ed74d2713c3856ba01264523289e6affected
LinuxLinux4.17affected
LinuxLinux0 < 4.17unaffected
LinuxLinux5.10.110 <= 5.10.*unaffected
LinuxLinux5.15.33 <= 5.15.*unaffected
LinuxLinux5.16.19 <= 5.16.*unaffected
LinuxLinux5.17.2 <= 5.17.*unaffected
LinuxLinux5.18 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References