CVE-2026-49418(freebsd / freebsd)

LOWCVSS 8.8 · 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

When msync(MS_INVALIDATE) is called on a mapping of an unmanaged device object, the physical pages in the mapping range are marked invalid but remain in the pager's page list. A subsequent page fault will cause the fault handler to re-insert the page into the object's list. This corrupts the list, and on object destruction the page is freed twice. An unprivileged local user with access to a device that provides memory-mapped I/O can trigger a use-after-free in the kernel, though this is limited to a pool of objects ("fictitious pages") that are never recycled for a different purpose. It may be possible to exploit this to escalate privileges.

0.0/ 10 priority

Sources & remediation

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

  • 1 total mentions across 1 day

Affected systems

Vendors
Products
freebsd

4 versions affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-10-26: 110-26
Full discourse1 post
  • Forha@Forhanvv

    PS5 FIRMWARE 14.10 SECURITY AUDIT: DEAD ENDS PRUNED & WEBCORE BECOMES #1 PRIORITY 🎯 New hardware testing results from 1,850 probes across retail 14.10 consoles: • Ecosystem Priority Aligned: Both research teams officially designate WebKit Canvas UAF (CVE-2026-43720 / @Arn0Stride7) as the #1 active exploit path for PS5 14.10; Lua-side bridge probe p550 deployed • Ghost Handle Closed (CVE-2019-5607): Probes 527b–527d tested high-volume STREAM/DGRAM buffer fills; zero phantom fds observed (patched in kernel) • Direct Memory R/W via dmem0: mmap(477) on /dev/dmem0 successfully maps physical GPU memory (0x100000000–0x150000000); 16GB physical scan confirms kernel System RAM (< 4GB) is 100% isolated • msync UAF Refused (CVE-2026-49418): Syscall 65 tested with MS_INVALIDATE across all 5 mapping classes; returns -1 (EINVAL) everywhere • AIO TOCTOU Race Mitigated: Probe 540b hit 384/384 slot swaps, but kernel safety code detected reallocation and aborted free (0x80020010)

    25095105.7K
    9.6K followersView on X
CPE platform detail38 entries

38 of 38 entries

PartVendorProductVersionTarget SWTarget HW
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
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--
OSfreebsdfreebsd14.4--
OSfreebsdfreebsd14.4--
OSfreebsdfreebsd14.4--
OSfreebsdfreebsd14.4--
OSfreebsdfreebsd14.4--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.0--
OSfreebsdfreebsd15.1--
OSfreebsdfreebsd15.1--
OSfreebsdfreebsd15.1--

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