{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/bpf_fs_kfuncs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e003f3a4be738f650e283e92d07017c3fef8da52",
              "status": "affected",
              "version": "56467292794b800164df20c076c409ac548e56ec",
              "versionType": "git"
            },
            {
              "lessThan": "0160edf2af51c5fde742973742c5d10497901b21",
              "status": "affected",
              "version": "56467292794b800164df20c076c409ac548e56ec",
              "versionType": "git"
            },
            {
              "lessThan": "07410646f6ff1d23222f105ccab778957d401bbe",
              "status": "affected",
              "version": "56467292794b800164df20c076c409ac548e56ec",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/bpf_fs_kfuncs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: fix crash in bpf_[set|remove]_dentry_xattr for negative dentries\n\nbpf_set_dentry_xattr and bpf_remove_dentry_xattr BPF kfuncs attempt to\nlock the inode of the supplied dentry without checking if it is\nNULL. If a negative dentry is passed (e.g. from\nsecurity_inode_create), d_inode(dentry) returns NULL, and\ninode_lock(inode) will cause a NULL pointer dereference.\n\nTrivially fix this by adding a NULL check for inode before attempting\nto lock it, returning -EINVAL if it is NULL.\n\nAdditionally, drop WARN_ON(!inode) in bpf_xattr_read_permission() and\nbpf_xattr_write_permission(). These warnings could be triggered by\npassing a negative dentry to bpf_get_dentry_xattr() or the _locked\nvariants of the xattr kfuncs, potentially causing a Denial of Service\non systems with panic_on_warn enabled. Instead, simply return -EINVAL."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:18:40.094Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e003f3a4be738f650e283e92d07017c3fef8da52"
        },
        {
          "url": "https://git.kernel.org/stable/c/0160edf2af51c5fde742973742c5d10497901b21"
        },
        {
          "url": "https://git.kernel.org/stable/c/07410646f6ff1d23222f105ccab778957d401bbe"
        }
      ],
      "title": "bpf: fix crash in bpf_[set|remove]_dentry_xattr for negative dentries",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74400",
    "datePublished": "2026-08-15T05:59:11.450Z",
    "dateReserved": "2026-08-15T05:44:03.892Z",
    "dateUpdated": "2026-08-17T05:18:40.094Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}