8.8

CVE-2026-63865: linux

CVSS: 8.8v3.1HighAwaiting analysis
AliasesUBUNTU-CVE-2026-63865DEBIAN-CVE-2026-63865
Published 19-07-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-63865 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.1% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
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 44 · Related 44
OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23477-1SUSE-SU-2026:23481-1SUSE-SU-2026:23528-1SUSE-SU-2026:23529-1SUSE-SU-2026:23881-1

Timeline

  1. 19-07-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Drop task_to_inode and inet_conn_established from lsm sleepable hooks bpf_lsm_task_to_inode() is called under rcu_read_lock() and bpf_lsm_inet_conn_established() is called from softirq context, so neither hook can be used by sleepable LSM programs.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.13%

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

Ubuntu154 products
  • linux< 5.15.0-186.196 | < 6.8.0-136.136 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1112.119 | < 6.8.0-1061.64 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.10-1
Linux1 product
  • linux≥ 423f16108c9d832bd96059d5c882c8ef6d76eb96, < 452a927cddcd67478d030e646f41cb904a93156f | ≥ 423f16108c9d832bd96059d5c882c8ef6d76eb96, < f0fc2a9828171205244a28013f02889f50b71c9f | ≥ 423f16108c9d832bd96059d5c882c8ef6d76eb96, < 26b380a3ca0b605fd8860995ed6a208f276dd316 | ≥ 423f16108c9d832bd96059d5c882c8ef6d76eb96, < 0d918263c9bfc86078edb2e2f7302a0c6ce42b7c | ≥ 423f16108c9d832bd96059d5c882c8ef6d76eb96, < 281f2a214565a5cbf8b7355a65738d80bd19b8c5 | ≥ 423f16108c9d832bd96059d5c882c8ef6d76eb96, < 989f1b93907de1753a814996222da375f07e579b | ≥ 423f16108c9d832bd96059d5c882c8ef6d76eb96, < beaf0e96b1da74549a6cabd040f9667d83b2e97e | 5.11

3 vendors · 156 products

References

44 links
Show all 44 references