5.5

CVE-2022-50482: iommu/vt-d: Clean up si_domain in the init_dmars() error path

Analyzed
AliasesUBUNTU-CVE-2022-50482DEBIAN-CVE-2022-50482
Published 04-10-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-50482 is a medium (CVSS 5.5) Use of Uninitialized Resource vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.5% 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
0.16%
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 7 · Related 4
RHSA-2023:0832RHSA-2023:2951RHSA-2023:6583SUSE-SU-2025:4111-1SUSE-SU-2025:4139-1SUSE-SU-2025:4149-1

Timeline

  1. 04-10-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Clean up si_domain in the init_dmars() error path A splat from kmem_cache_destroy() was seen with a kernel prior to commit ee2653bbe89d ("iommu/vt-d: Remove domain and devinfo mempool") when there was a failure in init_dmars(), because the iommu_domain cache still had objects. While the mempool code is now gone, there still is a leak of the si_domain memory if init_dmars() fails. So clean up si_domain in the init_dmars() error path.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.16% 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.

Ubuntu119 products
  • linuxAll versions (No fix recorded) | < 4.15.0-204.215 | < 5.4.0-139.156 | < 5.15.0-60.66
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1150.163 | < 5.4.0-1096.104 | < 5.15.0-1030.34
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 86080ccc223aabf8d0b85a504f4f06aa88e82fb3, < 749bea542b67513e99240dc58bbfc099e842d508 | ≥ 86080ccc223aabf8d0b85a504f4f06aa88e82fb3, < 5cecfe151874b835331efe086bbdcaeaf64f6b90 | ≥ 86080ccc223aabf8d0b85a504f4f06aa88e82fb3, < 724483b585a1b1e063d42ac5aa835707ff2ec165 | ≥ 86080ccc223aabf8d0b85a504f4f06aa88e82fb3, < d74196bb278b8f8af88e16bd595997dfa3d6fdb0 | ≥ 86080ccc223aabf8d0b85a504f4f06aa88e82fb3, < 0365d6af75f9f2696e94a0fef24a2c8464c037c8 | ≥ 86080ccc223aabf8d0b85a504f4f06aa88e82fb3, < c4ad3ae4c6be9d8b0701761c839771116bca6ea3 | ≥ 86080ccc223aabf8d0b85a504f4f06aa88e82fb3, < 620bf9f981365c18cc2766c53d92bf8131c63f32 | 4.2
  • linux_kernel≥ 4.2, < 4.14.298 | ≥ 4.15, < 4.19.264 | ≥ 4.20, < 5.4.221 | ≥ 5.5, < 5.10.152 | ≥ 5.11, < 5.15.76 | ≥ 5.16, < 6.0.6 | 6.1:rc1
Debian1 product
  • linux< 6.0.6-1

3 vendors · 122 products

References

11 links
Show all 11 references