CVE detail
CVE-2026-49416
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 6.9 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
1 source links · newest first
- https://security.freebsd.org/advisories/FreeBSD-SA-26:34.vt.ascsecurity.freebsd.org
No excerpt available.
Vendor Advisorysecurity.freebsd.orgJun 27, 2026, 10:16 AM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
Related records
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