HOMEVULNERABILITIESCVE-2026-31737
MEDIUM

CVE-2026-31737

Published: May 1, 2026· Updated: May 7, 2026

5.5
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:6.8th

Official Description

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

net: ftgmac100: fix ring allocation unwind on open failure

ftgmac100_alloc_rings() allocates rx_skbs, tx_skbs, rxdes, txdes, and

rx_scratch in stages. On intermediate failures it returned -ENOMEM

directly, leaking resources allocated earlier in the function.

Rework the failure path to use staged local unwind labels and free

allocated resources in reverse order before returning -ENOMEM. This

matches common netdev allocation cleanup style.

NVD Source

Technical Analysis

CVE-2026-31737 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 · 2 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/184b3a500d60ea48d1b176103cff1706c456edf3
PATCHhttps://git.kernel.org/stable/c/78da43320d9d6ed788147fb085184e4fc801f057
PATCHhttps://git.kernel.org/stable/c/82f86111f0704ab2ded11a2033bc6cf0be3e09ea
PATCHhttps://git.kernel.org/stable/c/8351d18989c8642fc53e2e12d94e42314a39b078
PATCHhttps://git.kernel.org/stable/c/8a71911fc7eeea930153322bc1efc065db8cd97e
PATCHhttps://git.kernel.org/stable/c/a7e1bf392acf11dc4209820fef75758f6e42bd65
PATCHhttps://git.kernel.org/stable/c/c0fd0fe745f5e8c568d898cd1513d0083e46204a
PATCHhttps://git.kernel.org/stable/c/d45230081f19c280096241353c26b0de457de795

All References (8)

→
https://git.kernel.org/stable/c/184b3a500d60ea48d1b176103cff1706c456edf3Patch
→
https://git.kernel.org/stable/c/78da43320d9d6ed788147fb085184e4fc801f057Patch
→
https://git.kernel.org/stable/c/82f86111f0704ab2ded11a2033bc6cf0be3e09eaPatch
→
https://git.kernel.org/stable/c/8351d18989c8642fc53e2e12d94e42314a39b078Patch
→
https://git.kernel.org/stable/c/8a71911fc7eeea930153322bc1efc065db8cd97ePatch
→
https://git.kernel.org/stable/c/a7e1bf392acf11dc4209820fef75758f6e42bd65Patch
→
https://git.kernel.org/stable/c/c0fd0fe745f5e8c568d898cd1513d0083e46204aPatch
→
https://git.kernel.org/stable/c/d45230081f19c280096241353c26b0de457de795Patch

Quick Facts

CVE IDCVE-2026-31737
CVSS Score5.5 / 10
SeverityMEDIUM
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMay 1, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31737 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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