# CVE-2026-99219: ftrace: Initialize modname and offset in print_rec()

CVE-2026-99219 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-99219, released November 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-99219
- Priority: Routine
- CVSS: 4.1 (Moderate)
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 2, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-99219

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.115-1 | [DEBIAN-CVE-2026-99219](https://patchblox.com/security/data/fix/linux/debian-cve-2026-99219.md) | Nov 3, 2026 |
| Linux | linux Debian 14 | 7.2.14-1 | [DEBIAN-CVE-2026-99219](https://patchblox.com/security/data/fix/linux/debian-cve-2026-99219.md) | Nov 3, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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