6

CVE-2026-98170: linux

CVSS: 6.0v4.0MediumReceived
AliasesUBUNTU-CVE-2026-98170DEBIAN-CVE-2026-98170
Published 06-10-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-98170 is a medium (CVSS 6.0) vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.3% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.0/10
010
Medium · v4.0 (OSV · Ubuntu), selected by version preference
EPSS score
0.20%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:12131-1

Timeline

  1. 06-10-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix OOB struct field reads in move_smb2_ea_to_cifs() In move_smb2_ea_to_cifs(), the while (src_size > 0) loop condition is insufficient. It allows iteration to continue even if the remaining src_size is too small to contain a complete smb2_ea_info structure. Consequently, reads of ea_name_length and ea_value_length can occur out-of-bounds. Fix this by ensuring src_size >= sizeof(*src) before attempting to read any structure fields. Additionally, reject any next_entry_offset that is smaller than sizeof(*src) or that would advance the pointer beyond the available buffer. Note that for calls where the server returns a malformed EA list, the error returned to userspace changes from -ENODATA (getxattr) or -ERANGE (listxattr) to -EIO. This correctly signals a server protocol error rather than misleadingly indicating "attribute not present" or "output buffer too small".

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

06-10-202621-10-2026
EPSS score
0.20%

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

Ubuntu168 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.113-1 | < 7.2.8-1
Linux1 product
  • linux≥ 95907fea4fd8ccc736e0a428e52159b4d42b9958, < 61812323c037a94e2e7f0db7ee740c34b126bffe | ≥ 95907fea4fd8ccc736e0a428e52159b4d42b9958, < d3546cecbf81d98bf3b472d341f981eb48c04f47 | ≥ 95907fea4fd8ccc736e0a428e52159b4d42b9958, < 34a3942e787b9c59758115bd65fe1ec89d68c7a4 | ≥ 95907fea4fd8ccc736e0a428e52159b4d42b9958, < 13efcd37a9b3d6ffa1579c3dda3e29c893ed9bca | ≥ 95907fea4fd8ccc736e0a428e52159b4d42b9958, < eeb5ef6083e1cefa2ef75041b5597ff228b8d7bb | 4.14

3 vendors · 170 products

References

9 links