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CVE-2026-5398Disclosure(freebsd / freebsd)

LOWCVSS 8.4 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the controlling terminal to the calling process' session. If the invoking process then exits, the terminal structure may end up containing a pointer to freed memory. A malicious process can abuse the dangling pointer to grant itself root privileges.

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0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-416

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • freebsd

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
freebsd
Products
freebsd

4 versions affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-04-25: 1Technical Details · 2026-04-25: 104-25
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • CVE@CVEnew
    Disclosure

    CVE-2026-5398 The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the controlling terminal to the calling process' session. If the invokin… https://www.cve.org/CVERecord?id=CVE-2026-5398

    Post summary

    The message reports details from the CVE record about a kernel back‑pointer issue (TIOCNOTTY), with no evidence of PoC, exploitation, or patch information.

    00000123
    57.3K followersView on X
CPE platform detail33 entries

33 of 33 entries

PartVendorProductVersionTarget SWTarget HW
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd13.5--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.4--
OSfreebsdfreebsd14.4--
OSfreebsdfreebsd14.4--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--

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