9.8

CVE-2026-45988: linux

CVSS: 9.8v3.1CriticalAnalyzed
AliasesUBUNTU-CVE-2026-45988DEBIAN-CVE-2026-45988
Published 27-05-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-45988 is a critical (CVSS 9.8) vulnerability in linux. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.3% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.46%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 31 · Related 45
LSN-0121-1OPENSUSE-SU-2026:10954-1USN-8488-1USN-8488-2USN-8489-1USN-8492-1

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix re-decryption of RESPONSE packets If a RESPONSE packet gets a temporary failure during processing, it may end up in a partially decrypted state - and then get requeued for a retry. Fix this by just discarding the packet; we will send another CHALLENGE packet and thereby elicit a further response. Similarly, discard an incoming CHALLENGE packet if we get an error whilst generating a RESPONSE; the server will send another CHALLENGE.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

0.00 pp

From 0.46% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.46%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu159 products
  • linux< 3.13.0-214.265 | < 4.4.0-283.317 | < 4.15.0-253.265 | < 5.4.0-233.253 | < 5.15.0-185.195 | < 6.8.0-134.134 | < 6.17.0-40.40 | < 7.0.0-27.27
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1156.162 | < 4.4.0-1194.209 | < 4.15.0-1194.207 | < 5.4.0-1161.172 | < 5.15.0-1111.118 | < 6.8.0-1060.63 | < 6.17.0-1019.19 | < 7.0.0-1008.8
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < d61482be4aae1835b78875761206241835a7510e | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 7b89868305052b94a91b708c462bc2281fa42a4a | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 76cb9a2d252274adfae6e293a292434631a7d472 | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < f55b383070170e988e4dec28be2af1714d258521 | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 0422e7a4883f25101903f3e8105c0808aa5f4ce9 | 2.6.22
  • linux_kernel≥ 2.6.22, < 6.6.140 | ≥ 6.7, < 6.12.86 | ≥ 6.13, < 6.18.27 | ≥ 6.19, < 7.0.4
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.86-1 | < 7.0.4-1

3 vendors · 162 products

References

54 links
Show all 54 references