CVE-2022-49015 (GCVE-0-2022-49015)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2026-08-05 08:53
VLAI
Title
net: hsr: Fix potential use-after-free
Summary
In the Linux kernel, the following vulnerability has been resolved: net: hsr: Fix potential use-after-free The skb is delivered to netif_rx() which may free it, after calling this, dereferencing skb may trigger use-after-free.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:13 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f421436a591d34fa5279b54a96ac07d70250cc8d , < 8393ce5040803666bfa26a3a7bf41e44fab0ace9 (git)
Affected: f421436a591d34fa5279b54a96ac07d70250cc8d , < 4b351609af4fdbc23f79ab2b12748f4403ea9af4 (git)
Affected: f421436a591d34fa5279b54a96ac07d70250cc8d , < b35d899854d5d5d58eb7d7e7c0f61afc60d3a9e9 (git)
Affected: f421436a591d34fa5279b54a96ac07d70250cc8d , < 53a62c5efe91665f7a41fad0f888a96f94dc59eb (git)
Affected: f421436a591d34fa5279b54a96ac07d70250cc8d , < 7ca81a161e406834a1fdc405fc83a572bd14b8d9 (git)
Affected: f421436a591d34fa5279b54a96ac07d70250cc8d , < dca370e575d9b6c983f5015e8dc035e23e219ee6 (git)
Affected: f421436a591d34fa5279b54a96ac07d70250cc8d , < f3add2b8cf620966de3ebfa07679ca12d33ec26f (git)
Affected: f421436a591d34fa5279b54a96ac07d70250cc8d , < 7e177d32442b7ed08a9fa61b61724abc548cb248 (git)
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Linux Linux Affected: 3.13
Unaffected: 0 , < 3.13 (semver)
Unaffected: 4.9.335 , ≤ 4.9.* (semver)
Unaffected: 4.14.301 , ≤ 4.14.* (semver)
Unaffected: 4.19.268 , ≤ 4.19.* (semver)
Unaffected: 5.4.226 , ≤ 5.4.* (semver)
Unaffected: 5.10.158 , ≤ 5.10.* (semver)
Unaffected: 5.15.82 , ≤ 5.15.* (semver)
Unaffected: 6.0.12 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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                  "value": "AV:A - HSR/PRP is an IEC 62439-3 Layer-2 Ethernet ring protocol; the vulnerable path is the slave rx_handler (hsr_handle_frame \u2192 hsr_forward_skb \u2192 hsr_deliver_master) and requires the attacker to be on the same LAN/ring segment as the HSR interfaces.\nAC:L - An adjacent attacker can reliably deliver frames addressed to the HSR node (or multicast/broadcast) into the vulnerable deliver path; use-after-free triggering does not depend on conditions outside the attacker\u0027s ability to send traffic.\nPR:N - Exploitation is on the unauthenticated packet-receive path of an already-configured HSR device; no credentials or privileges are required of the remote adjacent attacker.\nUI:N - Frames are processed automatically by the kernel HSR rx_handler with no user action required.\nS:U - Impact is confined to the host kernel that runs the HSR stack; there is no cross-authority boundary such as a VM or IOMMU escape.\nC:H - This is a use-after-free on an sk_buff; UAF on freed heap objects can be leveraged for arbitrary kernel memory disclosure.\nI:H - sk_buff use-after-free enables heap reuse/spraying and control-flow hijacking primitives, so integrity impact is High.\nA:H - Use-after-free of an sk_buff can cause kernel oops/panic or otherwise crash the host when the freed object is accessed or corrupted."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T08:53:27.063Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/8393ce5040803666bfa26a3a7bf41e44fab0ace9"
            },
            {
              "url": "https://git.kernel.org/stable/c/4b351609af4fdbc23f79ab2b12748f4403ea9af4"
            },
            {
              "url": "https://git.kernel.org/stable/c/b35d899854d5d5d58eb7d7e7c0f61afc60d3a9e9"
            },
            {
              "url": "https://git.kernel.org/stable/c/53a62c5efe91665f7a41fad0f888a96f94dc59eb"
            },
            {
              "url": "https://git.kernel.org/stable/c/7ca81a161e406834a1fdc405fc83a572bd14b8d9"
            },
            {
              "url": "https://git.kernel.org/stable/c/dca370e575d9b6c983f5015e8dc035e23e219ee6"
            },
            {
              "url": "https://git.kernel.org/stable/c/f3add2b8cf620966de3ebfa07679ca12d33ec26f"
            },
            {
              "url": "https://git.kernel.org/stable/c/7e177d32442b7ed08a9fa61b61724abc548cb248"
            }
          ],
          "title": "net: hsr: Fix potential use-after-free",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-49015",
        "datePublished": "2024-10-21T20:06:24.668Z",
        "dateReserved": "2024-08-22T01:27:53.645Z",
        "dateUpdated": "2026-08-05T08:53:27.063Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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