01 Record

CVE-2026-31708

smb: client: fix OOB read in smb2_ioctl_query_info QUERY_INFO path

HighPUBLISHEDCNA: Linux

CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

View raw JSON

02 Description

smb: client: fix OOB read in smb2_ioctl_query_info QUERY_INFO path

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.31% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 23.2% of scored records. A rank, not a probability.
NVD base score: 8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-19.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-05-01 13:56Z4 MO AGO

Last updated

2026-08-05 12:24Z1 MO AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Weaknesses

CWE-125Out-of-bounds ReadBase
CWE-805Buffer Access with Incorrect Length ValueBase

Data version

5.2

Document digest

562001d3630ead52a31b194b9d82f866cb9fa5f3799d3736b5278f5b0e22f218

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxf5778c398713692a16150ae96e5c8270bab8399f to < e66bdc0704977ecee667a81d38255b579c2353d0, f5778c398713692a16150ae96e5c8270bab8399f to < 9e203dbb5402897c43130fb171a2617008a91f45, f5778c398713692a16150ae96e5c8270bab8399f to < 1dd757379997b71a328a4b591ffaf481acd0ead1, f5778c398713692a16150ae96e5c8270bab8399f to < a34d456934fe42e4da5d2cc07787bf418bee99c6, f5778c398713692a16150ae96e5c8270bab8399f to < ac2f14e4705d020f04e806efa0d49ab8dc2b145f, f5778c398713692a16150ae96e5c8270bab8399f to < 078fae8f50adebb903ccf2252b44391324571e78, f5778c398713692a16150ae96e5c8270bab8399f to < 85fd46ee26a11841c670449508025965f61ce131, f5778c398713692a16150ae96e5c8270bab8399f to < a58c5af19ff0d6f44f6e9fe31e33a2c92223f77e, 5.1—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/e66bdc0704977ecee667a81d38255b579c2353d0
git.kernel.orghttps://git.kernel.org/stable/c/9e203dbb5402897c43130fb171a2617008a91f45
git.kernel.orghttps://git.kernel.org/stable/c/1dd757379997b71a328a4b591ffaf481acd0ead1
git.kernel.orghttps://git.kernel.org/stable/c/a34d456934fe42e4da5d2cc07787bf418bee99c6
git.kernel.orghttps://git.kernel.org/stable/c/ac2f14e4705d020f04e806efa0d49ab8dc2b145f
git.kernel.orghttps://git.kernel.org/stable/c/078fae8f50adebb903ccf2252b44391324571e78
git.kernel.orghttps://git.kernel.org/stable/c/85fd46ee26a11841c670449508025965f61ce131
git.kernel.orghttps://git.kernel.org/stable/c/a58c5af19ff0d6f44f6e9fe31e33a2c92223f77e

01 Record index

CVE-2026-31708

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-31708

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References