HOMEVULNERABILITIESCVE-2026-43248
HIGH

CVE-2026-43248

Published: May 6, 2026· Updated: May 11, 2026

7.8
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.7th

Official Description

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

vhost: move vdpa group bound check to vhost_vdpa

Remove duplication by consolidating these here. This reduces the

posibility of a parent driver missing them.

While we're at it, fix a bug in vdpa_sim where a valid ASID can be

assigned to a group equal to ngroups, causing an out of bound write.

NVD Source

Technical Analysis

CVE-2026-43248 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 1 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/406db68f9cb976a8ddfafd631197264f2307e9c9
PATCHhttps://git.kernel.org/stable/c/7441d35d14d9a3d66d925d90cb73c75394e6d454
PATCHhttps://git.kernel.org/stable/c/cd025c1e876b4e262e71398236a1550486a73ede
PATCHhttps://git.kernel.org/stable/c/ddb57354634b6ba851b79da45f1de42c646f27d0

All References (4)

→
https://git.kernel.org/stable/c/406db68f9cb976a8ddfafd631197264f2307e9c9Patch
→
https://git.kernel.org/stable/c/7441d35d14d9a3d66d925d90cb73c75394e6d454Patch
→
https://git.kernel.org/stable/c/cd025c1e876b4e262e71398236a1550486a73edePatch
→
https://git.kernel.org/stable/c/ddb57354634b6ba851b79da45f1de42c646f27d0Patch

Quick Facts

CVE IDCVE-2026-43248
CVSS Score7.8 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMay 6, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-43248 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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