CVE-2024-46741

Summary

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

misc: fastrpc: Fix double free of 'buf' in error path

smatch warning: drivers/misc/fastrpc.c:1926 fastrpc_req_mmap() error: double free of 'buf'

In fastrpc_req_mmap() error path, the fastrpc buffer is freed in fastrpc_req_munmap_impl() if unmap is successful.

But in the end, there is an unconditional call to fastrpc_buf_free(). So the above case triggers the double free of fastrpc buf.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux13327ed95222e70fa98805382b65636b872d87cb < 4753cc37b6606ef9a7ec22861d380d45e2707f9aaffected
LinuxLinux72fa6f7820c4cf96c5f7aabc4e54bdf52d1e2ac2 < f77dc8a75859e559f3238a6d906206259227985eaffected
LinuxLinux72fa6f7820c4cf96c5f7aabc4e54bdf52d1e2ac2 < bfc1704d909dc9911a558b1a5833d3d61a43a1f2affected
LinuxLinux72fa6f7820c4cf96c5f7aabc4e54bdf52d1e2ac2 < e8c276d4dc0e19ee48385f74426aebc855b49aafaffected
LinuxLinux911737ad0c860251f640a05feb75f9dc7e41f0d7affected
LinuxLinuxb10e064ca0f708c4b4401ac5eab0f76cf7cec93daffected
LinuxLinux5.10.267 < 5.11affected
LinuxLinux5.15.218 < 5.16affected
LinuxLinux6.2affected
LinuxLinux0 < 6.2unaffected
LinuxLinux6.6.51 <= 6.6.*unaffected
LinuxLinux6.10.10 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References