5.5

CVE-2026-31713: fuse: abort on fatal signal during sync init

Analyzed
AliasesUBUNTU-CVE-2026-31713DEBIAN-CVE-2026-31713CGA-2j3v-3fpg-cvch
Published 01-05-2026Last modified 14-06-2026

Vulnerability summary

CVE-2026-31713 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.11% chance of exploitation in the next 30 days, higher than 1.5% 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
0.11%
0%100%
Low · -0.05 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 6 · Related 7
OPENSUSE-SU-2026:10793-1USN-8488-1USN-8488-2USN-8507-1USN-8569-1USN-8603-1

Timeline

  1. 01-05-2026
    PublishedVulnerability first disclosed.
  2. 14-06-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: fuse: abort on fatal signal during sync init When sync init is used and the server exits for some reason (error, crash) while processing FUSE_INIT, the filesystem creation will hang. The reason is that while all other threads will exit, the mounting thread (or process) will keep the device fd open, which will prevent an abort from happening. This is a regression from the async mount case, where the mount was done first, and the FUSE_INIT processing afterwards, in which case there's no such recursive syscall keeping the fd open.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.11%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Decrease -0.05 pp

From 0.16% 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.

Ubuntu98 products
  • linux< 7.0.0-27.27
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 7.0.0-1008.8
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard6 products
  • linux-aws-6.18< 6.18.31-r0
  • linux-azure-6.18< 6.18.31-r0 | < 6.18.24-r1
  • linux-gcp-6.18< 6.18.31-r0
  • linux-qemu-6.18< 6.18.24-r3
  • linux-qemu-rc< 7.1_rc3-r0
Linux2 products
  • linux≥ dfb84c33079497bf27058b15780e1c7bba4c371b, < 0c7fca880a40a209a9c92be14143996d14b93ff6 | ≥ dfb84c33079497bf27058b15780e1c7bba4c371b, < 300e812b882a174dca675d8028684001ad5826bc | ≥ dfb84c33079497bf27058b15780e1c7bba4c371b, < 204aa22a686bfee48daca7db620c1e017615f2ff | 6.18
  • linux_kernel≥ 6.18, < 6.18.25 | ≥ 6.19, < 7.0.2 | 7.1:rc1
Debian1 product
  • linux< 7.0.3-1

4 vendors · 107 products

References

12 links
Show all 12 references