{
  "threat_severity" : "Moderate",
  "public_date" : "2026-03-25T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: RDMA/irdma: Fix kernel stack leak in irdma_create_user_ah()",
    "id" : "2451242",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2451242"
  },
  "cvss3" : {
    "cvss3_base_score" : "3.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
    "status" : "draft"
  },
  "cwe" : "CWE-908",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nRDMA/irdma: Fix kernel stack leak in irdma_create_user_ah()\nstruct irdma_create_ah_resp {  // 8 bytes, no padding\n__u32 ah_id;               // offset 0 - SET (uresp.ah_id = ah->sc_ah.ah_info.ah_idx)\n__u8  rsvd[4];             // offset 4 - NEVER SET <- LEAK\n};\nrsvd[4]: 4 bytes of stack memory leaked unconditionally. Only ah_id is assigned before ib_respond_udata().\nThe reserved members of the structure were not zeroed.", "A flaw was found in the Linux kernel's RDMA/irdma component. This vulnerability, located in the `irdma_create_user_ah()` function, is caused by uninitialized reserved memory. An attacker could potentially exploit this to leak 4 bytes of sensitive stack memory, leading to information disclosure." ],
  "statement" : "This flaw affects systems with Intel RDMA (irdma) adapters. The irdma_create_ah_resp structure's reserved bytes are not zeroed before being copied to userspace, leaking 4 bytes of kernel stack memory. The leaked data is limited in size and requires RDMA interface access. The current CVSS marks this as A:H but it should be C:L for information disclosure.",
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-23335\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23335\nhttps://lore.kernel.org/linux-cve-announce/2026032533-CVE-2026-23335-602d@gregkh/T" ],
  "name" : "CVE-2026-23335",
  "csaw" : false
}