5.5

CVE-2025-39822: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2025-39822DEBIAN-CVE-2025-39822CGA-25pm-8w8h-hrgh
Published 16-09-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-39822 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.4% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · 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 8 · Related 9
OPENSUSE-SU-2025:20172-1SUSE-SU-2025:4393-1SUSE-SU-2025:4516-1SUSE-SU-2025:4517-1SUSE-SU-2026:20012-1SUSE-SU-2026:20015-1

Timeline

  1. 16-09-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: fix signedness in this_len calculation When importing and using buffers, buf->len is considered unsigned. However, buf->len is converted to signed int when committing. This can lead to unexpected behavior if the buffer is large enough to be interpreted as a negative value. Make min_t calculation unsigned.

CVSS metrics

5 scores · 5 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

Ubuntu94 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Chainguard5 products
  • linux-aws-6.12< 6.12.76-r0 | < 6.12.65-r2 | < 6.12.70-r0 | < 6.12.74-r1 | < 6.12.62-r2 | < 6.12.72-r1 | < 6.12.69-r0 | < 6.12.62-r0 | < 6.12.77-r2 | < 6.12.63-r0 | < 6.12.65-r1 | < 6.12.66-r0 | < 6.12.78-r0 | < 6.12.68-r1 | < 6.12.60-r4 | < 6.12.77-r1 | < 6.12.74-r0 | < 6.12.77-r0 | < 6.12.80-r0 | < 6.12.67-r0 | < 6.12.62-r1 | < 6.12.71-r0 | < 6.12.65-r0 | < 6.12.72-r0 | < 6.12.68-r0
  • linux-azure-6.12< 6.12.65-r2 | < 6.12.72-r0 | < 6.12.65-r3 | < 6.12.71-r0 | < 6.12.66-r0 | < 6.12.74-r1 | < 6.12.78-r0 | < 6.12.77-r0 | < 6.12.62-r0 | < 6.12.65-r1 | < 6.12.77-r2 | < 6.12.77-r1 | < 6.12.63-r0 | < 6.12.80-r0 | < 6.12.70-r0 | < 6.12.67-r0 | < 6.12.68-r0 | < 6.12.60-r4 | < 6.12.69-r0 | < 6.12.74-r0 | < 6.12.65-r4 | < 6.12.62-r2 | < 6.12.76-r0 | < 6.12.62-r1
  • linux-gcp-6.12< 6.12.69-r0 | < 6.12.77-r1 | < 6.12.62-r1 | < 6.12.62-r2 | < 6.12.72-r0 | < 6.12.63-r0 | < 6.12.62-r0 | < 6.12.76-r0 | < 6.12.77-r0 | < 6.12.67-r0 | < 6.12.70-r0 | < 6.12.74-r0 | < 6.12.65-r2 | < 6.12.60-r4 | < 6.12.78-r0 | < 6.12.65-r0 | < 6.12.68-r0 | < 6.12.80-r0 | < 6.12.74-r1 | < 6.12.65-r1 | < 6.12.71-r0 | < 6.12.66-r0 | < 6.12.77-r2 | < 6.12.68-r1
  • linux-qemu-6.12< 6.12.74-r0 | < 6.12.68-r0 | < 6.12.77-r0 | < 6.12.67-r0 | < 6.12.65-r1 | < 6.12.70-r0 | < 6.12.72-r0 | < 6.12.74-r1 | < 6.12.80-r0 | < 6.12.77-r2 | < 6.12.71-r0 | < 6.12.69-r0 | < 6.12.66-r0 | < 6.12.77-r1 | < 6.12.78-r0 | < 6.12.76-r0 | < 6.12.65-r2
  • linux-vmware-6.12< 6.12.77-r0 | < 6.12.71-r0 | < 6.12.65-r2 | < 6.12.66-r0 | < 6.12.74-r1 | < 6.12.80-r0 | < 6.12.67-r0 | < 6.12.78-r0 | < 6.12.69-r0 | < 6.12.68-r0 | < 6.12.70-r0 | < 6.12.77-r1 | < 6.12.68-r1 | < 6.12.74-r0 | < 6.12.76-r0 | < 6.12.65-r1 | < 6.12.72-r0 | < 6.12.77-r2
Linux2 products
  • linux≥ cf9536e550dd243a1681fdbf804221527da20a80, < f4f411c068402c370c4f9a9d4950a97af97bbbb1 | ≥ cf9536e550dd243a1681fdbf804221527da20a80, < c64eff368ac676e8540344d27a3de47e0ad90d21 | 6.15
  • linux_kernel≥ 6.12, < 6.16.5 | 6.17:rc1 | 6.17:rc2 | 6.17:rc3
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.16.5-1

4 vendors · 102 products

References

9 links