CVE-2026-80655 (GCVE-0-2026-80655)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:49 – Updated: 2026-08-28 06:49
VLAI
Title
soc: xilinx: Fix race condition in event registration
Summary
In the Linux kernel, the following vulnerability has been resolved: soc: xilinx: Fix race condition in event registration The zynqmp_power driver registers handlers for suspend and subsystem restart events using register_event(). However, the work structures (zynqmp_pm_init_suspend_work and zynqmp_pm_init_restart_work) used by these handlers were allocated and initialized after the registration call. This created a race window where, if the firmware triggered an event immediately after registration but before allocation, the callback (suspend_event_callback or subsystem_restart_event_callback) would dereference a NULL pointer in work_pending(), leading to a crash. Fix this by allocating and initializing the work structures before registering the events.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fcf544ac64397776a18246eba5a8ca72a47c4405 , < d349aa118ff5e4cab88424ce1b16e08edd70f8bb (git)
Affected: fcf544ac64397776a18246eba5a8ca72a47c4405 , < fb445935338405110baca8f541a2df3b4cb8d712 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/soc/xilinx/zynqmp_power.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d349aa118ff5e4cab88424ce1b16e08edd70f8bb",
              "status": "affected",
              "version": "fcf544ac64397776a18246eba5a8ca72a47c4405",
              "versionType": "git"
            },
            {
              "lessThan": "fb445935338405110baca8f541a2df3b4cb8d712",
              "status": "affected",
              "version": "fcf544ac64397776a18246eba5a8ca72a47c4405",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/soc/xilinx/zynqmp_power.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "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": "7.1.5",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsoc: xilinx: Fix race condition in event registration\n\nThe zynqmp_power driver registers handlers for suspend and subsystem\nrestart events using register_event(). However, the work structures\n(zynqmp_pm_init_suspend_work and zynqmp_pm_init_restart_work) used by\nthese handlers were allocated and initialized after the registration\ncall.\n\nThis created a race window where, if the firmware triggered an event\nimmediately after registration but before allocation, the callback\n(suspend_event_callback or subsystem_restart_event_callback) would\ndereference a NULL pointer in work_pending(), leading to a crash.\n\nFix this by allocating and initializing the work structures before\nregistering the events."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-28T06:49:01.988Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d349aa118ff5e4cab88424ce1b16e08edd70f8bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/fb445935338405110baca8f541a2df3b4cb8d712"
        }
      ],
      "title": "soc: xilinx: Fix race condition in event registration",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80655",
    "datePublished": "2026-08-28T06:49:01.988Z",
    "dateReserved": "2026-08-26T14:34:25.780Z",
    "dateUpdated": "2026-08-28T06:49:01.988Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-80655",
      "date": "2026-09-01",
      "epss": "0.00155",
      "percentile": "0.04978"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-80655\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-28T08:16:50.573\",\"lastModified\":\"2026-08-28T08:16:50.573\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsoc: xilinx: Fix race condition in event registration\\n\\nThe zynqmp_power driver registers handlers for suspend and subsystem\\nrestart events using register_event(). However, the work structures\\n(zynqmp_pm_init_suspend_work and zynqmp_pm_init_restart_work) used by\\nthese handlers were allocated and initialized after the registration\\ncall.\\n\\nThis created a race window where, if the firmware triggered an event\\nimmediately after registration but before allocation, the callback\\n(suspend_event_callback or subsystem_restart_event_callback) would\\ndereference a NULL pointer in work_pending(), leading to a crash.\\n\\nFix this by allocating and initializing the work structures before\\nregistering the events.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/soc/xilinx/zynqmp_power.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"fcf544ac64397776a18246eba5a8ca72a47c4405\",\"lessThan\":\"d349aa118ff5e4cab88424ce1b16e08edd70f8bb\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fcf544ac64397776a18246eba5a8ca72a47c4405\",\"lessThan\":\"fb445935338405110baca8f541a2df3b4cb8d712\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/soc/xilinx/zynqmp_power.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.11\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.11\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/d349aa118ff5e4cab88424ce1b16e08edd70f8bb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fb445935338405110baca8f541a2df3b4cb8d712\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-31T09:08:03+00:00",
      "cve": "CVE-2026-80655",
      "id": "CVE-2026-80655",
      "initial_release_date": "2026-08-28T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: soc: xilinx: Fix race condition in event registration",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80655.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.