CVE-2026-46171: linux
CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-46171DEBIAN-CVE-2026-46171CGA-gcfj-rfgv-qqfvCGA-h7pc-52rx-7rmjCGA-m66v-rxph-3h8jCGA-v2vg-wj39-p8w7CGA-w53j-h7h4-jc62
Published 28-05-2026Last modified 14-06-2026
Vulnerability summary
CVE-2026-46171 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.7% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
0.16%
0%100%
Low · +0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 12 · Related 12Timeline
- 28-05-2026PublishedVulnerability first disclosed.
- 14-06-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: riscv: kvm: fix vector context allocation leak When the second kzalloc (host_context.vector.datap) fails in kvm_riscv_vcpu_alloc_vector_context, the first allocation (guest_context.vector.datap) is leaked. Free it before returning.
CVSS metrics
4 scores · 3 sources · 2 versionsLow 2.0Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NSourcesSingle source
Medium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.16%
Chance of exploitation in the next 30 days
Percentile
5%
Versus all other CVEs
30-day change
+0.03 pp
From 0.13% on 19-09-2026
19-09-202619-10-2026
EPSS score0.16%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu141 products
- linuxAll versions (No fix recorded) | < 7.0.0-28.28
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 7.0.0-1009.9
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Chainguard5 products
- linux-aws-6.12All versions (No fix recorded)
- linux-azure-6.12All versions (No fix recorded)
- linux-gcp-6.12All versions (No fix recorded)
- linux-qemu-6.12All versions (No fix recorded)
- linux-vmware-6.12All versions (No fix recorded)
Linux2 products
- linux≥ 0f4b82579716b12bb88257bd7ea80f25c791fb2c, < bd62c0f61bc722a097417401030c596cea8e21aa | ≥ 0f4b82579716b12bb88257bd7ea80f25c791fb2c, < 1d57ab45ec5c0e22789de793bcf2a31ad6fb7d98 | ≥ 0f4b82579716b12bb88257bd7ea80f25c791fb2c, < b7c958d7c1eb1cb9b2be7b5ee4129fcd66cec978 | 6.5
- linux_kernel≥ 6.5, < 6.18.30 | ≥ 6.19, < 7.0.7
Debian1 product
- linuxAll versions (No fix recorded) | < 7.0.7-1
4 vendors · 149 products
