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CVE-2026-80617 (GCVE-0-2026-80617)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:48 – Updated: 2026-08-29 06:21
VLAI
Title
net: airoha: fix foe_check_time allocation size
Summary
In the Linux kernel, the following vulnerability has been resolved: net: airoha: fix foe_check_time allocation size foe_check_time is declared as u16 pointer but was allocated with only ppe_num_entries bytes instead of ppe_num_entries * sizeof(u16). When airoha_ppe_foe_verify_entry() is called with hash >= ppe_num_entries/2, it writes beyond the allocated buffer, causing heap buffer overflow and potential kernel crash.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 56b99327a451917f1c17f85fc33ea8293c08a9ee , < 112b5eff24e044561ee9599a0d34e0fcea1df4e0 (git)
Affected: 6d5b601d52a27aafff555b480e538507901c672c , < 9f7cd1e26d2f1766438edc9b9254f2c618f9ae98 (git)
Affected: 6d5b601d52a27aafff555b480e538507901c672c , < 5c121ee635680c93d7074becf14cfbaac140f80d (git)
Affected: 6.18.33 , < 6.18.40 (semver)
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Linux Linux Affected: 6.19
Unaffected: 0 , < 6.19 (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
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              "value": "AV:N - The overflow is reached from netdev RX when hardware PPE reports HIT_UNBIND_RATE_REACHED; on Airoha EN7581/AN7583 CPE/router SoCs this path is driven by remotely sourced Ethernet WAN/LAN or WiFi traffic without local syscall access.\nAC:L - An attacker controls packet 5-tuples and send rate to populate FOE entries and force CPU-reason 0x0f; roughly half of valid hash indices (hash \u003e= ppe_num_entries/2) deterministically hit the undersized buffer, with only a 100ms per-hash software throttle.\nPR:N - Exploitation requires only the ability to send network packets to or through the device\u0027s registered interfaces; no local account, capability, namespace admin rights, or authentication on the RX/offload path.\nUI:N - No cooperative victim action is needed beyond normal always-on routing/bridging of attacker-supplied packets through the Airoha Ethernet or mt76 WiFi RX handlers.\nS:U - Impact is confined to kernel heap memory corruption and privilege escalation within the host running the Airoha driver; it does not cross a VM, hypervisor, or IOMMU security boundary.\nC:H - airoha_ppe_check_skb() performs an out-of-bounds read of ppe-\u003efoe_check_time[hash] before writing a u16 timestamp, and the adjacent heap overflow can expose or corrupt neighboring kernel objects.\nI:H - The same path writes a u16 beyond the allocated foe_check_time buffer, giving a kernel heap out-of-bounds write that can be leveraged for further memory corruption or control-flow manipulation.\nA:H - The fix commit explicitly warns of heap buffer overflow and potential kernel crash; corrupted adjacent heap metadata or pointers from the OOB access can trigger oops, panic, or loss of network availability."
            }
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    "datePublished": "2026-08-28T06:48:37.508Z",
    "dateReserved": "2026-08-26T14:34:25.774Z",
    "dateUpdated": "2026-08-29T06:21:25.270Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
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      "cve": "CVE-2026-80617",
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      "title": "SUSE CVE CVE-2026-80617",
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    }
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.