CVE-2023-54314

Summary

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

media: af9005: Fix null-ptr-deref in af9005_i2c_xfer

In af9005_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 af9005_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
LinuxLinuxaf4e067e1dcf926d9523dff11e46c45fd9fa9da2 < 98c12abb275b75a98ff62de9466d21e4daa98536affected
LinuxLinuxaf4e067e1dcf926d9523dff11e46c45fd9fa9da2 < 63d962ac7a52c0ff4cd09af2e284dce5e5955dfeaffected
LinuxLinuxaf4e067e1dcf926d9523dff11e46c45fd9fa9da2 < 0c02eb70b1dd4ae9bb304ce6cdadbc6faba2b2e9affected
LinuxLinuxaf4e067e1dcf926d9523dff11e46c45fd9fa9da2 < c7e5ac737db25d7387fe517cb5207706782b6cf8affected
LinuxLinuxaf4e067e1dcf926d9523dff11e46c45fd9fa9da2 < 033b0c0780adee32dde218179e9bc51d2525108faffected
LinuxLinuxaf4e067e1dcf926d9523dff11e46c45fd9fa9da2 < abb6fd93e05e80668d2317fe1110bc99b05034c3affected
LinuxLinuxaf4e067e1dcf926d9523dff11e46c45fd9fa9da2 < e595ff350b2fd600823ee8491df7df693ae4b7c5affected
LinuxLinuxaf4e067e1dcf926d9523dff11e46c45fd9fa9da2 < f4ee84f27625ce1fdf41e8483fa0561a1b837d10affected
LinuxLinux2.6.23affected
LinuxLinux0 < 2.6.23unaffected
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

References