CVE-2026-99219Published

ftrace: Initialize modname and offset in print_rec()

Exact source revision recorded 3 Nov 2026 21:57:16 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-99219

Published

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.

Source published: 2 Nov 2026 16:06:31 UTC
Source modified: 3 Nov 2026 19:12:54 UTC
Observed here: 3 Nov 2026 21:57:16 UTC
Source terms: CVE Program Terms of Use

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