UNKNOWN NVD
CVE-2026-99219
In the Linux kernel, the following vulnerability has been resolved: ftrace: Initialize modname and offset in print_rec() print_rec() leaves 'modname' and 'off
In the Linux kernel, the following vulnerability has been resolved:
ftrace: Initialize modname and offset in print_rec()
print_rec() leaves 'modname' and 'offset' uninitialized and
kallsyms_lookup() only sets them on success. When the lookup fails like
when a module is being loaded or unloaded, 'modname' holds a garbage
value, passes the 'if (modname)' check, and is dereferenced by
seq_printf().
Oops: general protection fault
RIP: 0010:string+0x48/0xe0
Call Trace:
vsnprintf+0x1f5/0x650
seq_printf+0x8e/0xb0
print_rec+0x6c/0xc0
t_show+0x4c/0x440
seq_read_iter+0x119/0x480
This can be triggered by reading available_filter_functions while a
module is being loaded or unloaded.
Initialize both variables so a failed lookup skips the module name.
References
- https://git.kernel.org/stable/c/0e5ff07be834abaf4280e1dca7f9591e339d0960
- https://git.kernel.org/stable/c/7271c064dd60d4456c5b90da757acd9420d06697
- https://git.kernel.org/stable/c/753d5cba113a52cb155428f4ea93a4b0148c4bf1
- https://git.kernel.org/stable/c/8932e5a4df110a25578728526bb5a3dbc849d8a2
- https://git.kernel.org/stable/c/d97dba9ff13987d1fc415408557a54adde980311
This unknown severity vulnerability was published on 2026-11-02 via NVD.
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