HOMEVULNERABILITIESCVE-2026-31646
MEDIUM

CVE-2026-31646

Published: April 24, 2026· Updated: Apr 27, 2026

5.5
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.8th

Official Description

In the Linux kernel, the following vulnerability has been resolved:

net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool()

page_pool_create() can return an ERR_PTR on failure. The return value

is used unconditionally in the loop that follows, passing the error

pointer through xdp_rxq_info_reg_mem_model() into page_pool_use_xdp_mem(),

which dereferences it, causing a kernel oops.

Add an IS_ERR check after page_pool_create() to return early on failure.

NVD Source

Technical Analysis

CVE-2026-31646 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://git.kernel.org/stable/c/305832c53551cfbe6e5b81ca7ee765e60f4fe8e9
PATCHhttps://git.kernel.org/stable/c/3fd0da4fd8851a7e62d009b7db6c4a05b092bc19
PATCHhttps://git.kernel.org/stable/c/7caf90d9ab97951a58d1de85ab7e7d7cca7a4513
PATCHhttps://git.kernel.org/stable/c/b5dcb41ba891b55157006cac79825c78a32b409e
PATCHhttps://git.kernel.org/stable/c/e63265f188ea39dcf5f546770650027528f3bd0f

All References (5)

→
https://git.kernel.org/stable/c/305832c53551cfbe6e5b81ca7ee765e60f4fe8e9Patch
→
https://git.kernel.org/stable/c/3fd0da4fd8851a7e62d009b7db6c4a05b092bc19Patch
→
https://git.kernel.org/stable/c/7caf90d9ab97951a58d1de85ab7e7d7cca7a4513Patch
→
https://git.kernel.org/stable/c/b5dcb41ba891b55157006cac79825c78a32b409ePatch
→
https://git.kernel.org/stable/c/e63265f188ea39dcf5f546770650027528f3bd0fPatch

Quick Facts

CVE IDCVE-2026-31646
CVSS Score5.5 / 10
SeverityMEDIUM
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedApr 24, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31646 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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