CVE-2024-42235

Summary

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

s390/mm: Add NULL pointer check to crst_table_free() base_crst_free()

crst_table_free() used to work with NULL pointers before the conversion to ptdescs. Since crst_table_free() can be called with a NULL pointer (error handling in crst_table_upgrade() add an explicit check.

Also add the same check to base_crst_free() for consistency reasons.

In real life this should not happen, since order two GFP_KERNEL allocations will not fail, unless FAIL_PAGE_ALLOC is enabled and used.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux6326c26c1514757242829b292b26eac589013200 < 794fa52b94637d6b2e8c9474fbe3983af5c9f046affected
LinuxLinux6326c26c1514757242829b292b26eac589013200 < f80bd8bb6f380bc265834c46058d38b34174813eaffected
LinuxLinux6326c26c1514757242829b292b26eac589013200 < b5efb63acf7bddaf20eacfcac654c25c446eabe8affected
LinuxLinux6.6affected
LinuxLinux0 < 6.6unaffected
LinuxLinux6.6.41 <= 6.6.*unaffected
LinuxLinux6.9.10 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References