CVE-2026-31679
openvswitch: validate MPLS set/set_masked payload length
Severity Score
7.1
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
In the Linux kernel, the following vulnerability has been resolved: openvswitch: validate MPLS set/set_masked payload length validate_set() accepted OVS_KEY_ATTR_MPLS as variable-sized payload for
SET/SET_MASKED actions. In action handling, OVS expects fixed-size
MPLS key data (struct ovs_key_mpls). Use the already normalized key_len (masked case included) and reject
non-matching MPLS action key sizes. Reject invalid MPLS action payload lengths early.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2026-03-09 CVE Reserved
- 2026-04-25 CVE Published
- 2026-04-27 CVE Updated
- 2026-04-28 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (9)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 5.10.253 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.10.253" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 5.15.203 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.15.203" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 6.1.168 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.1.168" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 6.6.131 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.6.131" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 6.12.80 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.12.80" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 6.18.21 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.18.21" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 6.19.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.19.11" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 7.0 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 7.0" | en |
Affected
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