CVE-2026-31658 (GCVE-0-2026-31658)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:45 – Updated: 2026-04-24 14:45
VLAI?
Title
net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()
Summary
In the Linux kernel, the following vulnerability has been resolved: net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit() When dma_map_single() fails in tse_start_xmit(), the function returns NETDEV_TX_OK without freeing the skb. Since NETDEV_TX_OK tells the stack the packet was consumed, the skb is never freed, leaking memory on every DMA mapping failure. Add dev_kfree_skb_any() before returning to properly free the skb.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bbd2190ce96d8fce031f0526c1f970b68adc9d1a , < ae2cd46f57f422b51aedd406ff5d75cbff401d5d (git)
Affected: bbd2190ce96d8fce031f0526c1f970b68adc9d1a , < cb1d318702fdf643061350d164250198df4116f2 (git)
Affected: bbd2190ce96d8fce031f0526c1f970b68adc9d1a , < d5ec406f0543bd6cdfd563b08015fdec8c4d5712 (git)
Affected: bbd2190ce96d8fce031f0526c1f970b68adc9d1a , < 2eb9d67704ca8f1101f7435b85f113ede471f9f2 (git)
Affected: bbd2190ce96d8fce031f0526c1f970b68adc9d1a , < 9f3ec44aeb58501d11834048d5d0dbaeacb6d4e7 (git)
Affected: bbd2190ce96d8fce031f0526c1f970b68adc9d1a , < 60f462cd2716d86bd2174f9d5e035c9278f30480 (git)
Affected: bbd2190ce96d8fce031f0526c1f970b68adc9d1a , < 3aca300e88afe56afb000cdc4c65383014fb17f9 (git)
Affected: bbd2190ce96d8fce031f0526c1f970b68adc9d1a , < 6dede3967619b5944003227a5d09fdc21ed57d10 (git)
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    Linux Linux Affected: 3.15
Unaffected: 0 , < 3.15 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.169 , ≤ 6.1.* (semver)
Unaffected: 6.6.135 , ≤ 6.6.* (semver)
Unaffected: 6.12.82 , ≤ 6.12.* (semver)
Unaffected: 6.18.23 , ≤ 6.18.* (semver)
Unaffected: 6.19.13 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/altera/altera_tse_main.c"
          ],
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/altera/altera_tse_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.15"
            },
            {
              "lessThan": "3.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.253",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.203",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.169",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.135",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.82",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.253",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.203",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.1.169",
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              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()\n\nWhen dma_map_single() fails in tse_start_xmit(), the function returns\nNETDEV_TX_OK without freeing the skb. Since NETDEV_TX_OK tells the\nstack the packet was consumed, the skb is never freed, leaking memory\non every DMA mapping failure.\n\nAdd dev_kfree_skb_any() before returning to properly free the skb."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-24T14:45:09.566Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ae2cd46f57f422b51aedd406ff5d75cbff401d5d"
        },
        {
          "url": "https://git.kernel.org/stable/c/cb1d318702fdf643061350d164250198df4116f2"
        },
        {
          "url": "https://git.kernel.org/stable/c/d5ec406f0543bd6cdfd563b08015fdec8c4d5712"
        },
        {
          "url": "https://git.kernel.org/stable/c/2eb9d67704ca8f1101f7435b85f113ede471f9f2"
        },
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          "url": "https://git.kernel.org/stable/c/9f3ec44aeb58501d11834048d5d0dbaeacb6d4e7"
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        },
        {
          "url": "https://git.kernel.org/stable/c/6dede3967619b5944003227a5d09fdc21ed57d10"
        }
      ],
      "title": "net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31658",
    "datePublished": "2026-04-24T14:45:09.566Z",
    "dateReserved": "2026-03-09T15:48:24.129Z",
    "dateUpdated": "2026-04-24T14:45:09.566Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-31658",
      "date": "2026-04-25",
      "epss": "0.00024",
      "percentile": "0.06802"
    },
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  }
}


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  • 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.
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  • 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.



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