In the Linux kernel, the following vulnerability has been resolved: bpf: Switch CONFIG_CFI_CLANG to CONFIG_CFI This was renamed in commit… (CVE-2026-53099)
A vulnerability in the Linux kernel related to the BPF subsystem was resolved by renaming a configuration option from CONFIG_CFI_CLANG to CONFIG_CFI. The incorrect configuration name caused the relevant code to be compiled out, allowing Control Flow Integrity (CFI) failures for btf_dtor_kfunc_t to still trigger. This issue has been fixed by the renaming commit.
AI Analysis
Technical Summary
The Linux kernel had a vulnerability where the BPF subsystem's Control Flow Integrity feature was not properly enabled due to a misnamed configuration option. The option CONFIG_CFI_CLANG was renamed to CONFIG_CFI in commit 23ef9d439769 to reflect its compiler-agnostic nature. Using the old name caused the CFI-related code to be excluded from compilation, allowing CFI failures for btf_dtor_kfunc_t to occur. This vulnerability has been resolved by switching to the correct configuration name.
Potential Impact
The vulnerability could lead to denial of service (as indicated by the CVSS impact vector showing no confidentiality or integrity impact but high availability impact). There is no indication of confidentiality or integrity compromise. The exploit requires local access with low privileges and no user interaction.
Mitigation Recommendations
A fix is available as the issue was resolved by the commit renaming the configuration option from CONFIG_CFI_CLANG to CONFIG_CFI. Users should ensure their Linux kernel is updated to include this fix. No additional mitigation steps are indicated.
In the Linux kernel, the following vulnerability has been resolved: bpf: Switch CONFIG_CFI_CLANG to CONFIG_CFI This was renamed in commit… (CVE-2026-53099)
Description
A vulnerability in the Linux kernel related to the BPF subsystem was resolved by renaming a configuration option from CONFIG_CFI_CLANG to CONFIG_CFI. The incorrect configuration name caused the relevant code to be compiled out, allowing Control Flow Integrity (CFI) failures for btf_dtor_kfunc_t to still trigger. This issue has been fixed by the renaming commit.
CVSS v3.1
Score 5.5medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel had a vulnerability where the BPF subsystem's Control Flow Integrity feature was not properly enabled due to a misnamed configuration option. The option CONFIG_CFI_CLANG was renamed to CONFIG_CFI in commit 23ef9d439769 to reflect its compiler-agnostic nature. Using the old name caused the CFI-related code to be excluded from compilation, allowing CFI failures for btf_dtor_kfunc_t to occur. This vulnerability has been resolved by switching to the correct configuration name.
Potential Impact
The vulnerability could lead to denial of service (as indicated by the CVSS impact vector showing no confidentiality or integrity impact but high availability impact). There is no indication of confidentiality or integrity compromise. The exploit requires local access with low privileges and no user interaction.
Mitigation Recommendations
A fix is available as the issue was resolved by the commit renaming the configuration option from CONFIG_CFI_CLANG to CONFIG_CFI. Users should ensure their Linux kernel is updated to include this fix. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-x2xc-9pfh-8g6q
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-53099"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a5fcf471010f89cc2152624
Added to database: 07/21/2026, 19:57:59 UTC
Last enriched: 09/15/2026, 06:52:11 UTC
Last updated: 09/15/2026, 06:52:11 UTC
Views: 27
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