In the Linux kernel, the following vulnerability has been resolved: ftrace: Initialize modname and offset in printrec() printrec() leaves…
CVE-2026-99219
In the Linux kernel, the following vulnerability has been resolved: ftrace: Initialize modname and offset in printrec() printrec() leaves 'modname' and 'offset' uninitialized and kallsymslookup() 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 seqprintf(). Oops: general protection fault RIP: 0010:string+0x48/0xe0 Call Trace: vsnprintf+0x1f5/0x650 seqprintf+0x8e/0xb0 printrec+0x6c/0xc0 tshow+0x4c/0x440 seqreaditer+0x119/0x480 This can be triggered by reading availablefilterfunctions while a module is being loaded or unloaded. Initialize both variables so a failed lookup skips the module name.
Assessment
- CVSS
- Not yet scored
- Severity
- Unscored
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 2 November 2026
- Last updated
- 3 November 2026
- Assigner
- Linux
At the source
References
- https://git.kernel.org/stable/c/753d5cba113a52cb155428f4ea93a4b0148c4bf1
- https://git.kernel.org/stable/c/0e5ff07be834abaf4280e1dca7f9591e339d0960
- https://git.kernel.org/stable/c/e2e6fb972bfec4a0551bc7c185bdb17f78f94997
- https://git.kernel.org/stable/c/8932e5a4df110a25578728526bb5a3dbc849d8a2
- https://git.kernel.org/stable/c/7271c064dd60d4456c5b90da757acd9420d06697
- https://git.kernel.org/stable/c/d97dba9ff13987d1fc415408557a54adde980311
- https://git.kernel.org/stable/c/e1f339ff3b83857b93baf8b88186275a413d445e
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