5.5

CVE-2021-47373: irqchip/gic-v3-its: Fix potential VPE leak on error

Analyzed
AliasesUBUNTU-CVE-2021-47373DEBIAN-CVE-2021-47373
Published 21-05-2024Last modified 11-05-2026

Vulnerability summary

CVE-2021-47373 is a medium (CVSS 5.5) Off-by-one Error vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.25%
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 11 · Related 8
RHSA-2022:8267RHSA-2024:5101RHSA-2024:5102SUSE-SU-2024:2008-1SUSE-SU-2024:2011-1SUSE-SU-2024:2019-1

Timeline

  1. 21-05-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3-its: Fix potential VPE leak on error In its_vpe_irq_domain_alloc, when its_vpe_init() returns an error, there is an off-by-one in the number of VPEs to be freed. Fix it by simply passing the number of VPEs allocated, which is the index of the loop iterating over the VPEs. [maz: fixed commit message]

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.25% 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.

Ubuntu86 products
  • linux< 4.15.0-163.171 | < 5.4.0-91.102
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.15.0-1116.123 | < 5.4.0-1060.63
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 7d75bbb4bc1ad90386776459d37e4ddfe605671e, < 7d39992d45acd6f2d6b2f62389c55b61fb3d486b | ≥ 7d75bbb4bc1ad90386776459d37e4ddfe605671e, < 5701e8bff314c155e7afdc467b1e0389d86853d0 | ≥ 7d75bbb4bc1ad90386776459d37e4ddfe605671e, < 42d3711c23781045e7a5cd28536c774b9a66d20b | ≥ 7d75bbb4bc1ad90386776459d37e4ddfe605671e, < 568662e37f927e3dc3e475f3ff7cf4ab7719c5e7 | ≥ 7d75bbb4bc1ad90386776459d37e4ddfe605671e, < e0c1c2e5da19685a20557a50f10c6aa4fa26aa84 | ≥ 7d75bbb4bc1ad90386776459d37e4ddfe605671e, < 280bef512933b2dda01d681d8cbe499b98fc5bdd | 4.14
  • linux_kernel≥ 4.14, < 4.14.249 | ≥ 4.15, < 4.19.209 | ≥ 4.20, < 5.4.150 | ≥ 5.5, < 5.10.70 | ≥ 5.11, < 5.14.9 | 5.15:rc1 | 5.15:rc2
Debian1 product
  • linux< 5.14.9-1

3 vendors · 89 products

References

10 links