EDAC/altera: Drop __init from ECC setup paths for re-probe safety
CVSS score
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EPSS probability
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Risk score
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Published
20 h ago
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
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Source agreement
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Evidence confidence
%63
Short explanation
The CVE-2026-98740 vulnerability in the Linux kernel EDAC/altera subsystem involves __init annotated ECC setup paths executing after init memory is freed, leading to freed memory dereferencing.
It threatens runtime security because init markings on setup paths can trigger freed memory dereference issues during deferred probing or manual rebinding scenarios.
What should be done?
- Follow vendor advisories
- Drop __init from ECC setup paths
- Keep the kernel codebase updated
Chain of evidence and sources
EDAC/altera alt sistemindeki __init nitelikleri, belleğin serbest bırakılmasından sonra çalışan yollarda serbest bırakılmış belleğe başvurulmasına neden olur.
a10 EDAC .setup geri çağrıları ve yardımcı fonksiyonlar __init ile işaretlenmiştir.
Show the technical text from the sources
In the Linux kernel, the following vulnerability has been resolved: EDAC/altera: Drop __init from ECC setup paths for re-probe safety Sashiko reports: "Does suppressing sysfs unbinding fully prevent the execution of freed __init memory? If altr_sysmgr_regmap_lookup_by_phandle() returns -EPROBE_DEFER, the probe is deferred until after __init memory is freed." The a10 EDAC .setup callbacks (sdmmc, ethernet, nand, dma, usb, qspi) and their helpers (altr_init_a10_ecc_device_type, altr_init_a10_ecc_block) were marked __init. These run from the probe path, which may execute after init memory is freed -- e.g. a probe deferred via -EPROBE_DEFER that only succeeds once a late/module dependency appears, or a manual unbind/rebind. Calling __init code then dereferences freed memory. Remove __init so these functions remain valid at runtime.
Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
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Patch and Remediation Guide
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-98740 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-98740 weaknesses.
Official Sources and Advisories
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