Cyber Resilience

CVE-2023-35788

Memory Safety in Linux Kernel 4.19 – 4.19.285

Public PoCMemory Safety
Published
16 June 2023
Modified
05 May 2025
Patch / advisory
CVSS Score v3.1 7.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0053 42th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2023-35788 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Linux Linux Kernel. Its CVSS base score is 7.8 (High).

Operationally, ranked at the 42th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability Data

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.

CWE(s)

Related Threats

CVEs Like This One

CVE-2023-2124Same product: Debian Debian Linux
CVE-2023-35001Same product: Debian Debian Linux
CVE-2023-2911Same product: Debian Debian Linux
CVE-2023-4273Same product: Debian Debian Linux
CVE-2024-26733Same product: Debian Debian Linux
CVE-2021-22555Same product: Linux Linux Kernel
CVE-2019-6977Same product: Canonical Ubuntu Linux
CVE-2022-0435Same product: Linux Linux Kernel
CVE-2024-2961Same product: Debian Debian Linux
CVE-2023-4911Same product: Canonical Ubuntu Linux

Affected Assets

linux
linux kernel
4.19 — 4.19.285 · 4.20 — 5.4.246 · 5.5 — 5.10.183
debian
debian linux
10.0, 11.0, 12.0
netapp
h300s firmware
all versions
netapp
h500s firmware
all versions
netapp
h700s firmware
all versions
netapp
h410s firmware
all versions
netapp
h410c firmware
all versions
canonical
ubuntu linux
14.04, 16.04, 18.04, 20.04, 22.04

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure-development practices (static analysis, bounds checking, code review) are the primary means of preventing out-of-bounds writes.

ID.RA-01 partial match
prevents

Vulnerability scanning and recording can discover out-of-bounds write flaws so they can be remediated.

PR.PS-02 partial match
prevents

Patching or replacing vulnerable software directly eliminates known instances of this coding weakness.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

detects

Security testing in development and acceptance can detect and prevent out-of-bounds write defects.

prevents

Secure development life cycle mandates practices that prevent out-of-bounds writes.

prevents

Application security requirements can specify bounds-checking and safe memory handling.

prevents

Secure architecture and engineering principles reduce the likelihood of buffer overflows.

prevents

Secure coding directly addresses out-of-bounds writes through language choice and coding standards.

prevents

Change management can enforce review gates that catch unsafe memory operations before deployment.

References