Vulnerabilities > CVE-2022-49061 - NULL Pointer Dereference vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: stmmac: fix altr_tse_pcs function when using a fixed-link When using a fixed-link, the altr_tse_pcs driver crashes due to null-pointer dereference as no phy_device is provided to tse_pcs_fix_mac_speed function. Fix this by adding a check for phy_dev before calling the tse_pcs_fix_mac_speed() function. Also clean up the tse_pcs_fix_mac_speed function a bit. There is no need to check for splitter_base and sgmii_adapter_base because the driver will fail if these 2 variables are not derived from the device tree.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- https://git.kernel.org/stable/c/08d5e3e954537931c8da7428034808d202e98299
- https://git.kernel.org/stable/c/62a48383ebe2e159fd68425dd3e16d4c6bd6599a
- https://git.kernel.org/stable/c/6c020f05253df04c3480b586fe188a3582740049
- https://git.kernel.org/stable/c/7e59fdf9547c4f948d1d917ec7ffa5fb5ac53bdb
- https://git.kernel.org/stable/c/a6aaa00324240967272b451bfa772547bd576ee6