CVE-2026-68135 (GCVE-0-2026-68135)

Vulnerability from cvelistv5 – Published: 2026-08-10 11:58 – Updated: 2026-08-19 16:29
VLAI
Title
net: hip04: fix RX buffer leak on build_skb failure
Summary
In the Linux kernel, the following vulnerability has been resolved: net: hip04: fix RX buffer leak on build_skb failure When build_skb() fails in hip04_rx_poll(), the driver jumps to the refill path without releasing the current RX buffer and its DMA mapping. Installing a replacement buffer then overwrites the slot references and leaks both resources. Keep the current slot intact and return budget so NAPI retries the same buffer. Also free a newly allocated RX fragment when dma_map_single() fails. This issue was found by an in-house static analysis tool.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 701a0fd5231866db08cebcd502894699f49cb960 , < 690ecc13a4032e5cae1dc6659512f32b033533b0 (git)
Affected: 701a0fd5231866db08cebcd502894699f49cb960 , < 2b19fe277645fd1aeb18fd4ecdcf31966080dee7 (git)
Affected: 701a0fd5231866db08cebcd502894699f49cb960 , < bcd43ee1f25b682151df213c06a99b2e1c1cf2e5 (git)
Affected: 701a0fd5231866db08cebcd502894699f49cb960 , < e054dcd990d8180cde529ea28ce0838e76a5ad5e (git)
Affected: 701a0fd5231866db08cebcd502894699f49cb960 , < 67a7614bde310da006ab259f4f163d3fb0f9e253 (git)
Affected: 701a0fd5231866db08cebcd502894699f49cb960 , < 80d977f280b4eccd4ac5369871d0ecb2b9c9a49d (git)
Affected: 701a0fd5231866db08cebcd502894699f49cb960 , < a0f247d63489a107bbc3b712a77b302af2a2a173 (git)
Affected: 701a0fd5231866db08cebcd502894699f49cb960 , < 14fa65d10f5696b063a7d8d26e8291ea84a2c6ed (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.5
Unaffected: 0 , < 4.5 (semver)
Unaffected: 5.10.265 , ≤ 5.10.* (semver)
Unaffected: 5.15.216 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hip04: fix RX buffer leak on build_skb failure\n\nWhen build_skb() fails in hip04_rx_poll(), the driver jumps to the\nrefill path without releasing the current RX buffer and its DMA mapping.\nInstalling a replacement buffer then overwrites the slot references and\nleaks both resources.\n\nKeep the current slot intact and return budget so NAPI retries the same\nbuffer.  Also free a newly allocated RX fragment when dma_map_single()\nfails.\n\nThis issue was found by an in-house static analysis tool."
        }
      ],
      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "datePublished": "2026-08-10T11:58:58.463Z",
    "dateReserved": "2026-07-30T09:28:09.370Z",
    "dateUpdated": "2026-08-19T16:29:52.114Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-14T17:30:04+00:00",
      "cve": "CVE-2026-68135",
      "id": "CVE-2026-68135",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_affected": "139",
      "product_status:known_not_affected": "137",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: hip04: fix RX buffer leak on build_skb failure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68135.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-08-18T16:56:22Z",
      "cve": "CVE-2026-68135",
      "id": "CVE-2026-68135",
      "initial_release_date": "2026-08-18T16:56:22Z",
      "product_status:known_affected": "243",
      "product_status:known_not_affected": "53",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68135",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68135.json",
      "version": "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.