CVE-2026-89716

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: zram: validate deflate params We must validate user-supplied deflate winbits before we pass it to zlib_deflate_workspacesize(), which triggers BUG_ON() if winbits value is outside of valid ranges.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-11 20:19:59.123000

Last modified

2026-10-19 09:18:10.563000

View original CVE JSON

{
  "id": "CVE-2026-89716",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-11T20:19:59.123",
  "lastModified": "2026-10-19T09:18:10.563",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nzram: validate deflate params\n\nWe must validate user-supplied deflate winbits before we pass it to\nzlib_deflate_workspacesize(), which triggers BUG_ON() if winbits value is\noutside of valid ranges."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/block/zram/backend_deflate.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "dc75a0d93bd5a1c64104efb4ec680463afbdd755",
              "lessThan": "923578d0f0d0703c3db61ab35dc37075ae53b0bd",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "dc75a0d93bd5a1c64104efb4ec680463afbdd755",
              "lessThan": "e23fac4ab2a5728386477b98a402a1042b21bffb",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "dc75a0d93bd5a1c64104efb4ec680463afbdd755",
              "lessThan": "ec7607ac4717ff521c9c1e9d8271c26293345513",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/block/zram/backend_deflate.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.16",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.16",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.50",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.4",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/923578d0f0d0703c3db61ab35dc37075ae53b0bd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e23fac4ab2a5728386477b98a402a1042b21bffb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ec7607ac4717ff521c9c1e9d8271c26293345513",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}