5.5

CVE-2022-50007: xfrm: fix refcount leak in __xfrm_policy_check()

Analyzed
AliasesUBUNTU-CVE-2022-50007DEBIAN-CVE-2022-50007
Published 18-06-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-50007 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16.9% 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 · +0.01 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 3 · Related 1
RHSA-2023:2458RHSA-2023:2951SUSE-SU-2025:03204-1

Timeline

  1. 18-06-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: xfrm: fix refcount leak in __xfrm_policy_check() The issue happens on an error path in __xfrm_policy_check(). When the fetching process of the object `pols[1]` fails, the function simply returns 0, forgetting to decrement the reference count of `pols[0]`, which is incremented earlier by either xfrm_sk_policy_lookup() or xfrm_policy_lookup(). This may result in memory leaks. Fix it by decreasing the reference count of `pols[0]` in that path.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

Increase +0.01 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

No weakness data has been published for this record.

Affected systems

Version check

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

Ubuntu111 products
  • linuxAll versions (No fix recorded) | < 4.15.0-201.212 | < 5.4.0-132.148 | < 5.15.0-53.59
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1147.159 | < 5.4.0-1089.97 | < 5.15.0-1023.27
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 134b0fc544ba062498451611cb6f3e4454221b3d, < 18e6b6e2555c93f5ca09f2b85ef1fa025c8accea | ≥ 134b0fc544ba062498451611cb6f3e4454221b3d, < 8f94b933103ee1bda119543369cc18a1be5536db | ≥ 134b0fc544ba062498451611cb6f3e4454221b3d, < 0769491a8acd3e85ca4c3f65080eac2c824262df | ≥ 134b0fc544ba062498451611cb6f3e4454221b3d, < 63da7a2bbf3f28094920e0b8a17d2571a9bd842d | ≥ 134b0fc544ba062498451611cb6f3e4454221b3d, < 1305d7d4f35ca6f214a2d23b075aa6a924cff3be | ≥ 134b0fc544ba062498451611cb6f3e4454221b3d, < 26ad2398fe4984f4f6f930bcb3bc9047fa77265b | ≥ 134b0fc544ba062498451611cb6f3e4454221b3d, < d66c052879791313f90c0584420f196a038fb8b8 | ≥ 134b0fc544ba062498451611cb6f3e4454221b3d, < 9c9cb23e00ddf45679b21b4dacc11d1ae7961ebe | 2.6.19
  • linux_kernel≥ 2.6.20, < 4.9.327 | ≥ 4.10, < 4.14.292 | ≥ 4.15, < 4.19.257 | ≥ 4.20, < 5.4.212 | ≥ 5.5, < 5.10.140 | ≥ 5.11, < 5.15.64 | ≥ 5.16, < 5.19.6 | 2.6.19 | 2.6.19:rc2 | 2.6.19:rc3 | 2.6.19:rc4 | 2.6.19:rc5 | 2.6.19:rc6 | 6.0:rc1 | 6.0:rc2
Debian1 product
  • linux< 6.0.2-1

3 vendors · 114 products

References

11 links
Show all 11 references