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esp: fix skb leak with espintcp and async crypto

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: esp: fix skb leak with espintcp and async crypto When the TX queue for espintcp is full, esp_output_tail_tcp will return an error and not free the skb, because with synchronous crypto, the common xfrm output code will drop the packet for us. With async crypto (esp_output_done), we need to drop the skb when esp_output_tail_tcp returns an error.

Announced Source revision 1
Original source ↗

CVE-2026-31518

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-31518

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
        "lessThan": "aca3ad0c262f54a5b5c95dda80a48365997d1224",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
        "lessThan": "41aafca57de4a4c026701622bd4648f112a9edcd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
        "lessThan": "4820847e036ff1035b01b69ad68dfc17e7028fe9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
        "lessThan": "6a3ec6efbc4f90e0ccb2e71574f07351f19996f4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
        "lessThan": "df6f995358dc1f3c42484f5cfe241d7bd3e1cd15",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
        "lessThan": "88d386243ed374ac969dabd3bbc1409a31d81818",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
        "lessThan": "6aa9841d917532d0f2d932d1ff2f3a94305aaf47",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
        "lessThan": "0c0eef8ccd2413b0a10eb6bbd3442333b1e64dd2",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/ipv4/esp4.c",
      "net/ipv6/esp6.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.6"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.6",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.253",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.203",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.168",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.131",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.80",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.21",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.11",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/ipv4/esp4.c",
      "net/ipv6/esp6.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-31518

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#28289 · Revision 1
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Publisher date
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