CVE-2026-63448

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Source

https://cve.org/CVERecord?id=CVE-2026-63448

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63448.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-63448

Aliases

GHSA-hvvj-c8xx-9g35

Downstream

Published

2026-09-18T20:20:01Z

Modified

2026-09-30T08:05:20Z

Severity

5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

Suricata smb: some SMB flows can cause resource exhaustion

Details

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, the SMB parser can retain force-completed transactions on flows where Suricata sees payload in only one direction, including async-oneside flows, because cleanup waits for inspection in the unseen direction. The transaction creation paths in rust/src/smb can exceed the intended SMB_MAX_TX bound, and cleanup repeatedly scans the growing list. Sustained one-directional SMB traffic can therefore cause unbounded per-flow state and CPU and memory exhaustion. This issue is fixed in versions 8.0.6 and 7.0.17.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-400",
        "CWE-401",
        "CWE-407"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63448.json"
}

References

Affected packages

Git / github.com/oisf/suricata

Affected ranges

Type

GIT

Repo

https://github.com/oisf/suricata

Events

Introduced

Fixed

f707f3208de8216e4eccada5c10e6edce460a82a

Introduced

9956286fb89f9cad9e9f95b99dc751f8666617b7

Fixed

4c28cc1b4ac64f48efdca6ce3e09748227a04a7e

Fixed

755d6c3061de4d7ba97f0ed31cdc17ab8cab4476

Fixed

7ec9d72d28b9370712cf77a5b9d40d6b5db27cb4

Fixed

88adab8bd3d62912941647ab65032d5ec75c893a

Fixed

9a54a043516e644bb7b9d34117a91977f950a281

Fixed

bc39274a638d1cca2391cfa4891c8b6c255ff9ce

Fixed

c8f68b0e4f9e721dca1c9ed6e08597c6964c7ac3

Database specific

Show details

{
    "cpe": "cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "7.0.17"
        },
        {
            "introduced": "8.0.0"
        },
        {
            "fixed": "8.0.6"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

suricata-0.*

suricata-0.8.2

suricata-1.*

suricata-1.0.0

suricata-1.0.1

suricata-1.0.2

suricata-1.1

suricata-1.1beta1

suricata-1.1beta2

suricata-1.1beta3

suricata-1.1rc1

suricata-1.2

suricata-1.2.1

suricata-1.2beta1

suricata-1.2rc1

suricata-1.3

suricata-1.3.1

suricata-1.3beta1

suricata-1.3beta2

suricata-1.3rc1

suricata-1.4

suricata-1.4beta1

suricata-1.4beta2

suricata-1.4beta3

suricata-1.4rc1

suricata-2.*

suricata-2.0

suricata-2.0.1

suricata-2.0.1rc1

suricata-2.0.2

suricata-2.0beta1

suricata-2.0beta2

suricata-2.0rc1

suricata-2.0rc2

suricata-2.0rc3

suricata-2.1beta1

suricata-2.1beta2

suricata-2.1beta3

suricata-2.1beta4

suricata-3.*

suricata-3.0

suricata-3.0.1

suricata-3.0.1RC1

suricata-3.0RC1

suricata-3.0RC2

suricata-3.0RC3

suricata-3.1

suricata-3.1.1

suricata-3.1.2

suricata-3.1RC1

suricata-3.2

suricata-3.2.1

suricata-3.2RC1

suricata-3.2beta1

suricata-4.*

suricata-4.0.0

suricata-4.0.0-beta1

suricata-4.0.0-rc1

suricata-4.0.0-rc2

suricata-4.0.1

suricata-4.1.0

suricata-4.1.0-beta1

suricata-4.1.0-rc1

suricata-4.1.0-rc2

suricata-4.1.1

suricata-4.1.2

suricata-5.*

suricata-5.0.0

suricata-5.0.0-beta1

suricata-5.0.0-rc1

suricata-5.0.1

suricata-6.*

suricata-6.0.0

suricata-6.0.0-beta1

suricata-6.0.0-rc1

suricata-6.0.1

suricata-7.*

suricata-7.0.0

suricata-7.0.0-beta1

suricata-7.0.0-rc1

suricata-7.0.0-rc2

suricata-7.0.1

suricata-7.0.10

suricata-7.0.11

suricata-7.0.12

suricata-7.0.13

suricata-7.0.14

suricata-7.0.15

suricata-7.0.16

suricata-7.0.2

suricata-7.0.3

suricata-7.0.4

suricata-7.0.5

suricata-7.0.6

suricata-7.0.7

suricata-7.0.8

suricata-7.0.9

suricata-8.*

suricata-8.0.0

suricata-8.0.1

suricata-8.0.2

suricata-8.0.3

suricata-8.0.4

suricata-8.0.5

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63448.json"

vanir_signatures

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vanir_signatures_modified

"2026-09-30T08:05:20Z"