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Vulnerability details: VCID-k9uw-x14d-qkhy
Vulnerability ID VCID-k9uw-x14d-qkhy
Aliases CVE-2026-31700
Summary kernel: net/packet: fix TOCTOU race on mmap'd vnet_hdr in tpacket_snd()
Status Published
Exploitability 0.5
Weighted Severity 5.5
Risk 2.8
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
System Score Found at
cvssv3 6.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31700.json
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-31700
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-31700
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-31700
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2026-31700
cvssv3.1 7 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31700.json
https://api.first.org/data/v1/epss?cve=CVE-2026-31700
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-31700
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2464358 https://bugzilla.redhat.com/show_bug.cgi?id=2464358
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31700.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.02709
EPSS Score 0.00014
Published At June 5, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:29:02.171319+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31700.json 38.6.0