CVE-2023-53220

Summary

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

media: az6007: Fix null-ptr-deref in az6007_i2c_xfer()

In az6007_i2c_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach az6007_i2c_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash.

Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 < c6763fefa267f6e62595a6ac1f57815d99fc90b7affected
LinuxLinuxcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 < adcb73f8ce9aec48b1f85223f401c1574015d8d2affected
LinuxLinuxcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 < 991c77fe18c6f374bbf83376f8c42550aa565662affected
LinuxLinuxcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 < a9def3e9718a4dc756f48db147d42ec41a966240affected
LinuxLinuxcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 < 5b1ea100ad3695025969dc4693f307877fb688d6affected
LinuxLinuxcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 < 6ab7ea4e17d6a605d05308adf8f3408924770cbaaffected
LinuxLinuxcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 < a1110f19d4940e4185251d072cbb0ff51486a1e7affected
LinuxLinuxcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 < 1047f9343011f2cedc73c64829686206a7e9fc3faffected
LinuxLinux3.4affected
LinuxLinux0 < 3.4unaffected
LinuxLinux4.14.326 <= 4.14.*unaffected
LinuxLinux4.19.295 <= 4.19.*unaffected
LinuxLinux5.4.257 <= 5.4.*unaffected
LinuxLinux5.10.197 <= 5.10.*unaffected
LinuxLinux5.15.133 <= 5.15.*unaffected
LinuxLinux6.1.55 <= 6.1.*unaffected
LinuxLinux6.5.5 <= 6.5.*unaffected
LinuxLinux6.6 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References