01 Record

CVE-2026-45856

RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send

HighPUBLISHEDCNA: Linux

CNA base score7.1 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

View raw JSON

02 Description

RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send

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: 0.17% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 6.1% of scored records. A rank, not a probability.
NVD base score: 7.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
NVD analysis status: Analyzed. NVD last modified this record on 2026-06-25.
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

2026-05-27 12:15Z3 MO AGO

Last updated

2026-08-05 12:28Z1 MO AGO

Reserved

2026-05-13

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

CWE-125Out-of-bounds ReadBase
CWE-1284Improper Validation of Specified Quantity in InputBase

Data version

5.2

Document digest

665990b641361ec978945773bd771a9be21303c3850114514a8bd124e8d567ea

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxc3bea3d2dc5358e05541527283279102383b0231 to < 9c15ec4cd4e7f57c6bbcb4e73e99290f150dd2a7, c3bea3d2dc5358e05541527283279102383b0231 to < 9b5ac1c15334d46c0dbd49d64a2257b929500163, c3bea3d2dc5358e05541527283279102383b0231 to < 01c9b152647dc70dc06a4a2eff86ebb3b3c76075, c3bea3d2dc5358e05541527283279102383b0231 to < bf1feed1a7886af945f92890493aefd2b5c9928a, c3bea3d2dc5358e05541527283279102383b0231 to < d533425ac1f2925b4fc3e4ed9b9d72362cb23475, c3bea3d2dc5358e05541527283279102383b0231 to < bf4454da8b1e712714628c0a0d6e7845bb40790a, c3bea3d2dc5358e05541527283279102383b0231 to < bef70ff9841990658610512b4a18e4a88c9b4df6, c3bea3d2dc5358e05541527283279102383b0231 to < 1956f0a74ccf5dc9c3ef717f2985c3ed3400aab0, 5.0—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/9c15ec4cd4e7f57c6bbcb4e73e99290f150dd2a7
git.kernel.orghttps://git.kernel.org/stable/c/9b5ac1c15334d46c0dbd49d64a2257b929500163
git.kernel.orghttps://git.kernel.org/stable/c/01c9b152647dc70dc06a4a2eff86ebb3b3c76075
git.kernel.orghttps://git.kernel.org/stable/c/bf1feed1a7886af945f92890493aefd2b5c9928a
git.kernel.orghttps://git.kernel.org/stable/c/d533425ac1f2925b4fc3e4ed9b9d72362cb23475
git.kernel.orghttps://git.kernel.org/stable/c/bf4454da8b1e712714628c0a0d6e7845bb40790a
git.kernel.orghttps://git.kernel.org/stable/c/bef70ff9841990658610512b4a18e4a88c9b4df6
git.kernel.orghttps://git.kernel.org/stable/c/1956f0a74ccf5dc9c3ef717f2985c3ed3400aab0

01 Record index

CVE-2026-45856

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-45856

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References