5.5

CVE-2026-31634: rxrpc: fix reference count leak in rxrpc_server_keyring()

Modified
AliasesUBUNTU-CVE-2026-31634DEBIAN-CVE-2026-31634
Published 24-04-2026Last modified 15-10-2026

Vulnerability summary

CVE-2026-31634 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.5% 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
0.13%
0%100%
Low · -0.04 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 29 · Related 27
MGASA-2026-0108MGASA-2026-0110USN-8567-1USN-8574-1USN-8574-2USN-8574-3

Timeline

  1. 24-04-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: fix reference count leak in rxrpc_server_keyring() This patch fixes a reference count leak in rxrpc_server_keyring() by checking if rx->securities is already set.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

Decrease -0.04 pp

From 0.17% 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.

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 45d9584e51bdd61faf1900f82666d4ea6a85da72 | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < fc76d0bd00850b7372f0a4a319c0c60f80487632 | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < c6d9ea26cf8756ad6f162578e94a5f82f6fae3c2 | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 9ce36d28f67c2a477a7e2f03480de3f6783fb363 | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 12de9e0e0b0b7058be7dfb8a5927eb565bc25780 | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 8ee931c3cd97f1c42b4fbf057f04b9dae45dfb7a | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 139c750bf06649097d98b0bc41e2a678b4627e27 | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < f125846ee79fcae537a964ce66494e96fa54a6de | 2.6.22
  • linux_kernel≥ 2.6.22.1, < 5.15.203 | ≥ 5.16, < 6.1.169 | ≥ 6.2, < 6.6.135 | ≥ 6.7, < 6.12.82 | ≥ 6.13, < 6.18.23 | ≥ 6.19, < 6.19.13 | 2.6.22 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6 | 7.0:rc7
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.13-1

3 vendors · 160 products

References

43 links
Show all 43 references