AZL-112535
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-112535.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-112535
- Upstream
- Published
- 2026-11-02T16:17:45Z
- Modified
- 2026-11-03T14:18:15Z
- Summary
- CVE-2026-99219 affecting package kernel 6.6.159.1-1
- Details
-
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