01 Record

CVE-2023-53296

sctp: check send stream number after wait_for_sndbuf

MediumPUBLISHEDCNA: Linux

CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

View raw JSON

02 Description

sctp: check send stream number after wait_for_sndbuf

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 4.3% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

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

2025-09-16 08:11Z11 MO AGO

Last updated

2026-05-11 19:42Z3 MO AGO

Reserved

2025-09-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

728271286f5ac87c333f539802db1a239da97e476daeca944b36da8f05387f6d

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 to < 9346a1a21142357972a6f466ba6275ddc54b04ac, 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 to < 0443fff49d6352160c200064156c25898bd9f58c, 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 to < b4b6dfad41aaae9e36e44327b18d5cf4b20dd2ce, 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 to < 667eb99cf7c15fe5b0ecefe75cf658e20ef20c9f, 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 to < d2128636b303aa9cf065055402ee6697409a8837, 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 to < a615e7270318fa0b98bf1ff38daf6cf52d840312, 5bbbbe32a43199c2b9ea5ea66fab6241c64beb51 to < 2584024b23552c00d95b50255e47bd18d306d31a, 4.15—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/9346a1a21142357972a6f466ba6275ddc54b04ac
git.kernel.orghttps://git.kernel.org/stable/c/0443fff49d6352160c200064156c25898bd9f58c
git.kernel.orghttps://git.kernel.org/stable/c/b4b6dfad41aaae9e36e44327b18d5cf4b20dd2ce
git.kernel.orghttps://git.kernel.org/stable/c/667eb99cf7c15fe5b0ecefe75cf658e20ef20c9f
git.kernel.orghttps://git.kernel.org/stable/c/d2128636b303aa9cf065055402ee6697409a8837
git.kernel.orghttps://git.kernel.org/stable/c/a615e7270318fa0b98bf1ff38daf6cf52d840312
git.kernel.orghttps://git.kernel.org/stable/c/2584024b23552c00d95b50255e47bd18d306d31a

01 Record index

CVE-2023-53296

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2023-53296

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References