01 Record

CVE-2026-23450

net/smc: fix NULL dereference and UAF in smc_tcp_syn_recv_sock()

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

net/smc: fix NULL dereference and UAF in smc_tcp_syn_recv_sock()

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: 0.56% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 44.3% 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: Modified. NVD last modified this record on 2026-07-24.
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

2026-04-03 15:15Z5 MO AGO

Last updated

2026-08-05 12:21Z1 MO AGO

Reserved

2026-01-13

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-416Use After FreeVariant
CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

75fd780c6b7f26178dca24374b83f42d594fa39cb303d19f3c9f4c2a1f0d3911

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxebfee3e153f67c8b38eb94a7062ee94aa6f92708 to < f315277856caeafcd996c2611afc085ca2d53275, 8270d9c21041470f58348248b9d9dcf3bf79592e to < 1e4f873879e075bbd4eb1c644d6933303ac5eba4, 8270d9c21041470f58348248b9d9dcf3bf79592e to < f00fc26c8a06442b225a350fe000c0a11483e6a3, 8270d9c21041470f58348248b9d9dcf3bf79592e to < cadf3da46c15523fba90d80c9955f536ee3b4023, 8270d9c21041470f58348248b9d9dcf3bf79592e to < fd7579f0a2c84ba8a7d4f206201b50dc8ddf90c2, 8270d9c21041470f58348248b9d9dcf3bf79592e to < 1fab5ece76fb42a761178dcd0ebcbf578377b0dd, 8270d9c21041470f58348248b9d9dcf3bf79592e to < 6d5e4538364b9ceb1ac2941a4deb86650afb3538, 5.15.174 to < 5.15.203, 5.18—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/f315277856caeafcd996c2611afc085ca2d53275
git.kernel.orghttps://git.kernel.org/stable/c/1e4f873879e075bbd4eb1c644d6933303ac5eba4
git.kernel.orghttps://git.kernel.org/stable/c/f00fc26c8a06442b225a350fe000c0a11483e6a3
git.kernel.orghttps://git.kernel.org/stable/c/cadf3da46c15523fba90d80c9955f536ee3b4023
git.kernel.orghttps://git.kernel.org/stable/c/fd7579f0a2c84ba8a7d4f206201b50dc8ddf90c2
git.kernel.orghttps://git.kernel.org/stable/c/1fab5ece76fb42a761178dcd0ebcbf578377b0dd
git.kernel.orghttps://git.kernel.org/stable/c/6d5e4538364b9ceb1ac2941a4deb86650afb3538
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html

01 Record index

CVE-2026-23450

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-23450

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References