5.5

CVE-2026-43010: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-43010DEBIAN-CVE-2026-43010CGA-42jr-hw5q-r2rv
Published 01-05-2026Last modified 04-07-2026
Open JSON

Vulnerability summary

CVE-2026-43010 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.12%
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 13 · Related 13
OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22521-1SUSE-SU-2026:22522-1SUSE-SU-2026:22665-1SUSE-SU-2026:22666-1SUSE-SU-2026:22742-1

Timeline

  1. 01-05-2026
    PublishedVulnerability first disclosed.
  2. 04-07-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject sleepable kprobe_multi programs at attach time kprobe.multi programs run in atomic/RCU context and cannot sleep. However, bpf_kprobe_multi_link_attach() did not validate whether the program being attached had the sleepable flag set, allowing sleepable helpers such as bpf_copy_from_user() to be invoked from a non-sleepable context. This causes a "sleeping function called from invalid context" splat: BUG: sleeping function called from invalid context at ./include/linux/uaccess.h:169 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1787, name: sudo preempt_count: 1, expected: 0 RCU nest depth: 2, expected: 0 Fix this by rejecting sleepable programs early in bpf_kprobe_multi_link_attach(), before any further processing.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.12%

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

Ubuntu132 products
  • linuxAll versions (No fix recorded) | < 6.8.0-147.147
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1067.70
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard5 products
  • linux-aws-6.12All versions (No fix recorded)
  • linux-azure-6.12All versions (No fix recorded)
  • linux-gcp-6.12All versions (No fix recorded)
  • linux-qemu-6.12All versions (No fix recorded)
  • linux-vmware-6.12All versions (No fix recorded)
Linux2 products
  • linux≥ 0dcac272540613d41c05e89679e4ddb978b612f1, < 89327ed787746a7aa4db3c97f91d2e294228932b | ≥ 0dcac272540613d41c05e89679e4ddb978b612f1, < d97b19fe5265f7901b2c862f88a4eb1b129a0b61 | ≥ 0dcac272540613d41c05e89679e4ddb978b612f1, < dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3 | ≥ 0dcac272540613d41c05e89679e4ddb978b612f1, < f952157e695fd434bdc05af63a703bb082a78717 | ≥ 0dcac272540613d41c05e89679e4ddb978b612f1, < eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8 | 5.18
  • linux_kernel≥ 5.18, < 6.18.22 | ≥ 6.19, < 6.19.12 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.95-1 | < 6.19.12-1

4 vendors · 140 products

References

12 links
Show all 12 references