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CVE-2026-49430Disclosure(freebsd / freebsd)

LOWCVSS 7.8 · 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

The ZFS_IOC_RECV_NEW ioctl, in the heal receive path, similarly truncated a 64-bit payload size to a 32-bit integer for allocation, then used the original 64-bit size as the length for a byteswap operation. A local user with the "receive" delegated ZFS permission can trigger kernel memory corruption via ZFS_IOC_RECV_NEW by sending a crafted receive stream in heal mode.

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0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-122

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 · 2026-08-19: 1Technical Details · 2026-08-19: 108-19
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-49430 ZFS Kernel Memory Corruption via ZFS_IOC_RECV_NEW ioctl https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-49430

    Post summary

    The entry announces a new kernel memory corruption vulnerability in ZFS (CVE-2026-49430) that exploits the ZFS_IOC_RECV_NEW ioctl, providing basic technical details but lacking evidence of exploitation or mitigation.

    00000103
    4.1K followersView on X
CPE platform detail38 entries

38 of 38 entries

PartVendorProductVersionTarget SWTarget HW
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
OSfreebsdfreebsd14.3--
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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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