What is CVE-2023-35788?

CVE-2023-35788 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Out-of-bounds Write flaw (CWE-787). CVE-2023-35788 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-35788?

CVE-2023-35788 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2023-35788?

No patch is currently available for CVE-2023-35788. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-35788 actively exploited?

CVE-2023-35788 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Write (CWE-787)?

The product writes data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/787.html

CVE-2023-35788

High

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation.

Package Linux Kernel

Published 2023-06-16

Last modified 2025-05-05

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-787

CVE-2023-35788 is a Out-of-bounds Write vulnerability

What is Out-of-bounds Write?

The product writes data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2023-35788 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Packet Storm
http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html

Third Party Advisory VDB Entry
Openwall
http://www.openwall.com/lists/oss-security/2023/06/17/1

Exploit Mailing List
Debian Security
https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html

Mailing List Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html

Mailing List Third Party Advisory
Security
https://security.netapp.com/advisory/ntap-20230714-0002/

Third Party Advisory
Debian Security
https://www.debian.org/security/2023/dsa-5448

Third Party Advisory
Debian Security
https://www.debian.org/security/2023/dsa-5480

Third Party Advisory
Openwall
https://www.openwall.com/lists/oss-security/2023/06/07/1

Exploit Mailing List
Kernel patch commit
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.7
Patch
Kernel patch commit
https://git.kernel.org/linus/4d56304e5827c8cc8cc18c75343d283af7c4825c
Patch

Details

CVE ID CVE-2023-35788

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2023-06-16

Modified 2025-05-05

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-35788?

CVE-2023-35788 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . CVE-2023-35788 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-35788?

CVE-2023-35788 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2023-35788?

No patch is currently available for CVE-2023-35788. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-35788 actively exploited?

No — CVE-2023-35788 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Out-of-bounds Write (CWE-787)?

The product writes data past the end or before the beginning of the intended buffer. View CWE-787 on MITRE CWE →