01 Record

CVE-2026-31787

xen/privcmd: fix double free via VMA splitting

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

xen/privcmd: fix double free via VMA splitting

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.18% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 8.2% of scored records. A rank, not a probability.
NVD base score: 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-04-30 10:31Z4 MO AGO

Last updated

2026-06-14 17:44Z2 MO AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-415Double FreeVariant
CWE-763Release of Invalid Pointer or ReferenceBase

Data version

5.2

Document digest

bcab4f07da38bf4816299cbcf06fcbab3d02f42444b92c035e267ad10aa1524c

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxd71f513985c22f1050295d1a7e4327cf9fb060da to < dbf862ce9f009128ab86b234d91413a3e450beb4, d71f513985c22f1050295d1a7e4327cf9fb060da to < 2b985d3a024b9e8c24e21671b34e855569763808, d71f513985c22f1050295d1a7e4327cf9fb060da to < 1576ff3869cbd3620717195f971c85b7d7fd62b5, d71f513985c22f1050295d1a7e4327cf9fb060da to < 402d84ad9e89bd4cbfd07ca8598532b7021daf95, d71f513985c22f1050295d1a7e4327cf9fb060da to < 2894a351fe2ea8684919d36df3188b9a35e3926f, d71f513985c22f1050295d1a7e4327cf9fb060da to < 446ee446d9ae66f36e95c3c90bbcc4e56b94cde0, d71f513985c22f1050295d1a7e4327cf9fb060da to < 71bf829800758a6e3889096e4754ef47ba7fc850, d71f513985c22f1050295d1a7e4327cf9fb060da to < 24daca4fc07f3ff8cd0e3f629cd982187f48436a, 3.8—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/dbf862ce9f009128ab86b234d91413a3e450beb4
git.kernel.orghttps://git.kernel.org/stable/c/2b985d3a024b9e8c24e21671b34e855569763808
git.kernel.orghttps://git.kernel.org/stable/c/1576ff3869cbd3620717195f971c85b7d7fd62b5
git.kernel.orghttps://git.kernel.org/stable/c/402d84ad9e89bd4cbfd07ca8598532b7021daf95
git.kernel.orghttps://git.kernel.org/stable/c/2894a351fe2ea8684919d36df3188b9a35e3926f
git.kernel.orghttps://git.kernel.org/stable/c/446ee446d9ae66f36e95c3c90bbcc4e56b94cde0
git.kernel.orghttps://git.kernel.org/stable/c/71bf829800758a6e3889096e4754ef47ba7fc850
git.kernel.orghttps://git.kernel.org/stable/c/24daca4fc07f3ff8cd0e3f629cd982187f48436a
www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/04/28/14
xenbits.xen.orghttp://xenbits.xen.org/xsa/advisory-487.html

01 Record index

CVE-2026-31787

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-31787

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References