01 Record

CVE-2026-53176

IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN

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

IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN

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: 0.73% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 51.7% 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: Analyzed. NVD last modified this record on 2026-07-15.
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

2026-06-25 08:38Z2 MO AGO

Last updated

2026-08-05 12:33Z1 MO AGO

Reserved

2026-06-09

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-191Integer Underflow (Wrap or Wraparound)Base
CWE-839Numeric Range Comparison Without Minimum CheckBase

Data version

5.2

Document digest

3e1dbb3b7bcd84802049b5f2e01254a17423118cd17f4679604f2dbd2d1697f6

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxb8d26b3be8b33682cf163274ed07479a70554633 to < 75ee6e4aa096aa9e7b2dd5c8ff98356e30aceefb, b8d26b3be8b33682cf163274ed07479a70554633 to < e8a013c0c3ca2f6708341a56612a3f6d6921620a, b8d26b3be8b33682cf163274ed07479a70554633 to < bd22740d7f14cb1c0289444cfd2c8d2938667c1d, b8d26b3be8b33682cf163274ed07479a70554633 to < c1234229399f4af12c553b1b0ffd978eeba65548, b8d26b3be8b33682cf163274ed07479a70554633 to < c5584e089b5af7b3bf8bd5e8ca0560cbf32b0a47, b8d26b3be8b33682cf163274ed07479a70554633 to < df422fd273c96c2ee5beb80fc21adc8c70c29260, b8d26b3be8b33682cf163274ed07479a70554633 to < 1ca40b243277c9e88be5e00bd3e083f71aefb93e, b8d26b3be8b33682cf163274ed07479a70554633 to < 29e7b925ae6df64894e82ab6419994dc25580a8a, 3.10—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/75ee6e4aa096aa9e7b2dd5c8ff98356e30aceefb
git.kernel.orghttps://git.kernel.org/stable/c/e8a013c0c3ca2f6708341a56612a3f6d6921620a
git.kernel.orghttps://git.kernel.org/stable/c/bd22740d7f14cb1c0289444cfd2c8d2938667c1d
git.kernel.orghttps://git.kernel.org/stable/c/c1234229399f4af12c553b1b0ffd978eeba65548
git.kernel.orghttps://git.kernel.org/stable/c/c5584e089b5af7b3bf8bd5e8ca0560cbf32b0a47
git.kernel.orghttps://git.kernel.org/stable/c/df422fd273c96c2ee5beb80fc21adc8c70c29260
git.kernel.orghttps://git.kernel.org/stable/c/1ca40b243277c9e88be5e00bd3e083f71aefb93e
git.kernel.orghttps://git.kernel.org/stable/c/29e7b925ae6df64894e82ab6419994dc25580a8a
access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-53176vdb-entryx_refsource_REDHAT
bugzilla.redhat.comRHBZ#2492741https://bugzilla.redhat.com/show_bug.cgi?id=2492741issue-trackingx_refsource_REDHAT
security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53176.jsonx_sadp-csaf-vex

01 Record index

CVE-2026-53176

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-53176

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References