VulnerabilityPublished 26 Oct 2026

CVE-2026-99092: Linux kernel · riscv: patch: fix handling of bpf-jit execmem addresses

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f71d6ea3843c8038c431c2699482f246aea37ca0 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 17:30 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

Patch: Available – fixed in f71d6ea3843c8038c431c2699482f246aea37ca0, a510e1ae8c9030750c2edf7b0bc9b186cd8c7a06, 562a35b9e0b3d9483d9472995219cadb3592db3d +1

Exploitation evidence

Disclosed: evidence found.
CVE published 26 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to f71d6ea3843c8038c431c2699482f246aea37ca0, a510e1ae8c9030750c2edf7b0bc9b186cd8c7a06, 562a35b9e0b3d9483d9472995219cadb3592db3d or 9e8fc7972b398e9dc2415ece283d8f64edac3858.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 2c9e5d4a008293407836d29d35dfd4353615bd2f, < f71d6ea3843c8038c431c2699482f246aea37ca0	Fixed in f71d6ea3843c8038c431c2699482f246aea37ca0
LinuxLinux	Affected ≥ 2c9e5d4a008293407836d29d35dfd4353615bd2f, < a510e1ae8c9030750c2edf7b0bc9b186cd8c7a06	Fixed in a510e1ae8c9030750c2edf7b0bc9b186cd8c7a06
LinuxLinux	Affected ≥ 2c9e5d4a008293407836d29d35dfd4353615bd2f, < 562a35b9e0b3d9483d9472995219cadb3592db3d	Fixed in 562a35b9e0b3d9483d9472995219cadb3592db3d
LinuxLinux	Affected ≥ 2c9e5d4a008293407836d29d35dfd4353615bd2f, < 9e8fc7972b398e9dc2415ece283d8f64edac3858	Fixed in 9e8fc7972b398e9dc2415ece283d8f64edac3858
LinuxLinux	Affected =6.10	Fixed in–

AI-suggested

A fix for this vulnerability is available and has been applied in specific Linux kernel commits. Users and administrators should update to a Linux kernel version that includes these fixes to resolve the issue. No additional mitigation actions are required beyond applying the official patch. The vulnerability does not affect !CONFIG_MMU builds. Since this is a kernel-level fix, upgrading the kernel is the recommended remediation.

Description

CVE-2026-99092 is a vulnerability in the Linux kernel affecting the riscv architecture's handling of bpf-jit execmem addresses. The issue arises from incorrect assumptions about memory writability in the vmalloc area when CONFIG_STRICT_MODULE_RWX is disabled, causing BPF JIT compilation to fail. This bug affects kernel version 6.10 and similar configurations where strict module RWX enforcement is not enabled. The flaw has been fixed in specific commits addressing the patch_map() function to correctly handle executable memory mappings for BPF JIT code.

Impact

The vulnerability causes BPF JIT compilation to fail on affected riscv Linux kernels, resulting in BPF programs not being JIT-compiled and potentially running less efficiently. This occurs because the kernel attempts to write to read-only memory, causing page faults and error propagation that prevent JIT finalization. There is no indication of code execution or privilege escalation impact. The issue affects kernel stability and performance related to BPF JIT but does not appear to enable direct exploitation or system compromise.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 15:04 UTC

Technical details

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