7.1

CVE-2026-98167: linux

CVSS: 7.1v4.0HighReceived
AliasesUBUNTU-CVE-2026-98167DEBIAN-CVE-2026-98167
Published 06-10-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-98167 is a high (CVSS 7.1) vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.3% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v4.0 (OSV · Ubuntu), selected by version preference
EPSS score
0.22%
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. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix server->total_read for compound encrypted PDUs In receive_encrypted_standard(), server->total_read is left at the full decrypted frame size when walking sub-PDUs of a compound encrypted frame. As a result, cifs_handle_standard() passes this full size to smb2_check_message(), causing the PDU length guards to incorrectly validate the entire compound frame instead of the current sub-PDU. This allows truncated non-last sub-PDUs to bypass length validation, leading to out-of-bounds reads in smb2_get_data_area_len(). Fix this by setting server->total_read to the true length of the current sub-PDU: next_cmd for non-last sub-PDUs, and the remaining pdu_length for the last one.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

06-10-202621-10-2026
EPSS score
0.22%

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

Ubuntu165 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) | < 6.1.190-1 | < 6.12.113-1 | < 7.2.8-1
Linux1 product
  • linux≥ b24df3e30cbf48255db866720fb71f14bf9d2f39, < 8703539d22fdbc13dd2db090ee199c3a427b8ea0 | ≥ b24df3e30cbf48255db866720fb71f14bf9d2f39, < e78fc1d240b27349b45a0f1c3e3c2c401d7e230d | ≥ b24df3e30cbf48255db866720fb71f14bf9d2f39, < a46eb242e9eef3a3897d166748b23303c516e870 | ≥ b24df3e30cbf48255db866720fb71f14bf9d2f39, < ebb8a075fdc7af3d196a4f158a0e18dbc394c0e3 | ≥ b24df3e30cbf48255db866720fb71f14bf9d2f39, < 282b72f9a7ef31296c48366db4128882999cc048 | ≥ b24df3e30cbf48255db866720fb71f14bf9d2f39, < f73726b83e4756fdaa099e1bc1143293bd57ad79 | 4.19

3 vendors · 167 products

References

10 links