{
  "cveId": "CVE-2026-97502",
  "url": "https://patchblox.com/security/cve/CVE-2026-97502",
  "summary": "CVE-2026-97502 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2026-97502, released September 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "mmc: davinci: avoid NULL deref of host-\u003Edata in IRQ handler",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mmc: davinci: avoid NULL deref of host-\u003Edata in IRQ handler  mmc_davinci_irq() returns early only when both host-\u003Ecmd and host-\u003Edata are NULL:    if (host-\u003Ecmd == NULL \u0026\u0026 host-\u003Edata == NULL) {           ...           return IRQ_NONE;   }  So we may legitimately reach the rest of the handler with host-\u003Edata == NULL (and therefore data == NULL). The DATDNE branch already guards against this with an explicit \u0022if (data != NULL)\u0022 check, but the subsequent TOUTRD (\u0022read data timeout\u0022) and CRCWR/CRCRD (\u0022data CRC error\u0022) branches dereference data unconditionally:    if (qstatus \u0026 MMCST0_TOUTRD) {           data-\u003Eerror = -ETIMEDOUT;        \u003C-- NULL deref           ...           davinci_abort_data(host, data);   }    if (qstatus \u0026 (MMCST0_CRCWR | MMCST0_CRCRD)) {           data-\u003Eerror = -EILSEQ;           \u003C-- NULL deref           ...   }  If either bit is set in qstatus while host-\u003Edata is NULL, the kernel will crash inside the IRQ handler. smatch flags this:    drivers/mmc/host/davinci_mmc.c:933 mmc_davinci_irq() error: we     previously assumed \u0027data\u0027 could be null (see line 914)  Gate both branches on a non-NULL data, matching the existing pattern used by the DATDNE branch.  No functional change for callers where data is non-NULL, which is the only case in which these branches did meaningful work before this change.",
  "published": "2026-09-24T17:17:27Z",
  "severity": "Moderate",
  "cvss": 4.6,
  "epss": 0.00161,
  "epssPercentile": 0.05292,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97502",
  "fixes": [
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.90.1",
      "fix": "SUSE-SU-2026:5091-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5091-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.90.1",
      "fix": "SUSE-SU-2026:5091-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5091-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.90.1",
      "fix": "SUSE-SU-2026:5091-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5091-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default-base",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.90.1.150700.17.51.1",
      "fix": "SUSE-SU-2026:5091-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5091-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "kernel-docs",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.90.1",
      "fix": "SUSE-SU-2026:5091-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5091-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-SLE15-SP7_Update_24",
      "release": "sles 15.7",
      "fixedVersion": "1-150700.15.3.1",
      "fix": "SUSE-SU-2026:5091-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5091-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "kernel-obs-build",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.90.1",
      "fix": "SUSE-SU-2026:5091-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5091-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "kernel-source",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.90.1",
      "fix": "SUSE-SU-2026:5091-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5091-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "kernel-syms",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.90.1",
      "fix": "SUSE-SU-2026:5091-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5091-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "kernel-zfcpdump",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.90.1",
      "fix": "SUSE-SU-2026:5091-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5091-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.190-1",
      "fix": "DEBIAN-CVE-2026-97502",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-97502",
      "released": "2026-09-24T19:30:44Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.111-1",
      "fix": "DEBIAN-CVE-2026-97502",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-97502",
      "released": "2026-09-24T19:30:44Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-97502",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-97502",
      "released": "2026-09-24T19:30:44Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.111-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-97502",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-97502",
      "released": "2026-09-24T19:30:44Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}