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CVE-2023-35788

HIGH

7.8

CVSS Score

Published: June 16, 2023 at 12:00 AM UTC

Updated: June 17, 2026 at 06:05 AM UTC

13 products affected across 4 vendorsLinux KernelDebian LinuxUbuntu Linux

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Severity

HIGH7.8

Exploit prediction

EPSS 0.5%

SSVC

PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ubuntu Linux · Canonicalrubygems

95%

14.04 16.04 18.04 20.04 22.04

Debian Linux · Debiandrupal

95%

Linux Kernel · Linux

95%

4.19 ≤ v < 4.19.2854.20 ≤ v < 5.4.2465.11 ≤ v < 5.15.1165.16 ≤ v < 6.1.335.5 ≤ v < 5.10.1836.2 ≤ v < 6.3.7

Affected range stops below 4.19.285, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.10.183, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.15.116, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.4.246, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.1.33, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.3.7, so it looks safe — our inference, not a vendor statement

H300S Firmware · NetAppdrupal

95%

All versions

netapp-h300s (same device)

H410C Firmware · NetAppdrupal

95%

All versions

netapp-h410c (same device)

H410S Firmware · NetAppdrupal

95%

All versions

netapp-h410s (same device)

H500S Firmware · NetAppdrupal

95%

All versions

netapp-h500s (same device)

H700S Firmware · NetAppdrupal

95%

All versions

netapp-h700s (same device)

H300S · NetAppdevice

80%

All versions

H410C · NetAppdevice

80%

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (10)

Third Party AdvisoryVDB Entry

Source: [email protected]

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

Mailing ListExploit

Source: [email protected]

http://www.openwall.com/lists/oss-security/2023/06/17/1

Mailing ListPatch

Source: [email protected]

https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.7

Patch

Source: [email protected]

https://git.kernel.org/linus/4d56304e5827c8cc8cc18c75343d283af7c4825c

Mailing ListThird Party Advisory

Source: [email protected]

https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html

Mailing ListThird Party Advisory

Source: [email protected]

https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html

Third Party Advisory

Source: [email protected]

https://security.netapp.com/advisory/ntap-20230714-0002/

Vendor AdvisoryThird Party Advisory

Source: [email protected]

https://www.debian.org/security/2023/dsa-5448

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCISA-ADP

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-787

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