7.8

CVE-2021-47296: KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak

Modified
AliasesUBUNTU-CVE-2021-47296DEBIAN-CVE-2021-47296
Published 21-05-2024Last modified 05-08-2026

Vulnerability summary

CVE-2021-47296 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.24%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 4
SUSE-SU-2024:2010-1SUSE-SU-2024:2183-1SUSE-SU-2024:2185-1SUSE-SU-2025:01995-1

Timeline

  1. 21-05-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak vcpu_put is not called if the user copy fails. This can result in preempt notifier corruption and crashes, among other issues.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.24% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu83 products
  • linux< 5.4.0-88.99
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1057.60
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ b3cebfe8c1cadf1817939dcc3688a2504a69c662, < 9bafc34dc4ad0cef18727c557f21ed3c3304df50 | ≥ b3cebfe8c1cadf1817939dcc3688a2504a69c662, < f38527f1890543cdfca8dfd06f75f9887cce6151 | ≥ b3cebfe8c1cadf1817939dcc3688a2504a69c662, < e14ef1095387f764d95614d3ec9e4d07c82a3533 | ≥ b3cebfe8c1cadf1817939dcc3688a2504a69c662, < a4a488915feaad38345cc01b80d52e8200ff5209 | ≥ b3cebfe8c1cadf1817939dcc3688a2504a69c662, < bc4188a2f56e821ea057aca6bf444e138d06c252 | 4.18
  • linux_kernel≥ 4.18, < 4.19.199 | ≥ 4.20, < 5.4.136 | ≥ 5.5, < 5.10.54 | ≥ 5.11, < 5.13.6 | 5.14:rc1 | 5.14:rc2
Debian1 product
  • linux< 5.14.6-1

3 vendors · 86 products

References

9 links