01 Record

CVE-2026-74556

scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer

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: 0.40% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 32.7% of scored records. A rank, not a probability.
NVD base score: 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Received. NVD last modified this record on 2026-08-19.
Red Hat severity: Important. 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

2026-08-15 12:28Z20 DAYS AGO

Last updated

2026-08-19 16:38Z16 DAYS AGO

Reserved

2026-08-15

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base

Data version

5.2

Document digest

10ce7b1968f4796afb065b424a3660dd485a18d01b88bbca4bf5434e8adc0a66

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxa081c13e39b5c17052a7b46fafa61019c4c110ff to < a51812842084fd390590ab8dc0431f10c73ddc56, a081c13e39b5c17052a7b46fafa61019c4c110ff to < a8f94cc9f0e5759252551be3a172960c57f21f54, a081c13e39b5c17052a7b46fafa61019c4c110ff to < f1a3a51fc5dba0e99532379665069f1700da6b44, a081c13e39b5c17052a7b46fafa61019c4c110ff to < c97b5265cc47775f77fd2a23d6bde0426997b233, a081c13e39b5c17052a7b46fafa61019c4c110ff to < 084af0253673425ce2ae62e3c7f74f0dd023711b, a081c13e39b5c17052a7b46fafa61019c4c110ff to < 72815741715bd41556dac5eeb068bf0f8af06ee7, a081c13e39b5c17052a7b46fafa61019c4c110ff to < b0aa3e8e2ab4ca92adb28a3ef41873b3363b8676, a081c13e39b5c17052a7b46fafa61019c4c110ff to < c1dea15f819cded9b3faf58f8bec72323568b6e6, 2.6.29—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/a51812842084fd390590ab8dc0431f10c73ddc56
git.kernel.orghttps://git.kernel.org/stable/c/a8f94cc9f0e5759252551be3a172960c57f21f54
git.kernel.orghttps://git.kernel.org/stable/c/f1a3a51fc5dba0e99532379665069f1700da6b44
git.kernel.orghttps://git.kernel.org/stable/c/c97b5265cc47775f77fd2a23d6bde0426997b233
git.kernel.orghttps://git.kernel.org/stable/c/084af0253673425ce2ae62e3c7f74f0dd023711b
git.kernel.orghttps://git.kernel.org/stable/c/72815741715bd41556dac5eeb068bf0f8af06ee7
git.kernel.orghttps://git.kernel.org/stable/c/b0aa3e8e2ab4ca92adb28a3ef41873b3363b8676
git.kernel.orghttps://git.kernel.org/stable/c/c1dea15f819cded9b3faf58f8bec72323568b6e6

01 Record index

CVE-2026-74556

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-74556

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References