Description (CNA)
The CONS_HISTORY ioctl handler did not adequately validate the requested history size. A large value caused an integer overflow in the buffer size calculation, resulting in a heap allocation smaller than expected. Subsequent initialization of the buffer wrote beyond the end of the allocation. An unprivileged local user with access to a vt(4) device can trigger an out-of-bounds write in the kernel, potentially escalating privileges.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| FreeBSD / FreeBSD | affected 15.0-RELEASE before p10; affected 14.4-RELEASE before p6; affected 14.3-RELEASE before p15 |
CWE
CWE-190
References
ADP enrichment
No English description supplied.
No references supplied.