CVE-2022-50075

Summary

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

tracing/eprobes: Have event probes be consistent with kprobes and uprobes

Currently, if a symbol "@" is attempted to be used with an event probe (eprobes), it will cause a NULL pointer dereference crash.

Both kprobes and uprobes can reference data other than the main registers. Such as immediate address, symbols and the current task name. Have eprobes do the same thing.

For "comm", if "comm" is used and the event being attached to does not have the "comm" field, then make it the "$comm" that kprobes has. This is consistent to the way histograms and filters work.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux7491e2c442781a1860181adb5ab472a52075f393 < b489aca082a23033a3d8355cfb0032f0e2523440affected
LinuxLinux7491e2c442781a1860181adb5ab472a52075f393 < 47cc883f21fa3bcf24891b4b455f4cd461ce2d6eaffected
LinuxLinux7491e2c442781a1860181adb5ab472a52075f393 < 6a832ec3d680b3a4f4fad5752672827d71bae501affected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux5.15.63 <= 5.15.*unaffected
LinuxLinux5.19.4 <= 5.19.*unaffected
LinuxLinux6.0 <= *unaffected

Weaknesses

References