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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
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)
guessed Create a notification for this product.
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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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-13T18:28:03+00:00",
      "cve": "CVE-2022-49015",
      "id": "CVE-2022-49015",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "108",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: hsr: Fix potential use-after-free",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49015.json",
      "version": "3"
    },
    "vulnrichment": {
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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 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      "cveMetadata": "{\"cveId\": \"CVE-2022-49015\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:53:27.063Z\", \"dateReserved\": \"2024-08-22T01:27:53.645Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T20:06:24.668Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

Author Source Type Date Other

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.