CVE-2026-74542

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix folio_queue ENOMEM in writeback by adding a mempool Fix the handling of folio_queue allocation failure in writeback by adding a mempool and passing in gfp_t flags to the rolling buffer functions that allocate memory, using the mempool if gfp != GFP_KERNEL. This is then extended upwards and the gfp to be used for a request is stored in the netfs_io_request struct and is then used for both requests and subrequests, eliminating the sleeping loops there. The failure caused: folio != NULL WARNING: fs/netfs/write_issue.c:603 at netfs_writepages+0x883/0xa10 fs/netfs/write_issue.c:603, CPU#3: syz.0.17/5919

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

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

Published

2026-08-15 13:17:59.543000

Last modified

2026-10-21 13:19:46.490000

View original CVE JSON

{
  "id": "CVE-2026-74542",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-08-15T13:17:59.543",
  "lastModified": "2026-10-21T13:19:46.490",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix folio_queue ENOMEM in writeback by adding a mempool\n\nFix the handling of folio_queue allocation failure in writeback by adding a\nmempool and passing in gfp_t flags to the rolling buffer functions that\nallocate memory, using the mempool if gfp != GFP_KERNEL.\n\nThis is then extended upwards and the gfp to be used for a request is stored\nin the netfs_io_request struct and is then used for both requests and\nsubrequests, eliminating the sleeping loops there.\n\nThe failure caused:\n\n    folio != NULL\n    WARNING: fs/netfs/write_issue.c:603 at netfs_writepages+0x883/0xa10 fs/netfs/write_issue.c:603, CPU#3: syz.0.17/5919"
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "fs/netfs/buffered_read.c",
            "fs/netfs/internal.h",
            "fs/netfs/main.c",
            "fs/netfs/objects.c",
            "fs/netfs/read_pgpriv2.c",
            "fs/netfs/rolling_buffer.c",
            "fs/netfs/write_issue.c",
            "include/linux/netfs.h",
            "include/linux/rolling_buffer.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "cd0277ed0c188dd40e7744e89299af7b78831ca4",
              "lessThan": "b343252d6f536203dd0660f676190dcbf6d2ecdc",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "cd0277ed0c188dd40e7744e89299af7b78831ca4",
              "lessThan": "15ed8a9b7c63e9171f5139a6aaa1ffb61809861f",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "cd0277ed0c188dd40e7744e89299af7b78831ca4",
              "lessThan": "3f6d7f8a5416d852648d15a05e895f1195ee8a85",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "cd0277ed0c188dd40e7744e89299af7b78831ca4",
              "lessThan": "1d78d56c43ef3768183e8370e7367b162700e049",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "fs/netfs/buffered_read.c",
            "fs/netfs/internal.h",
            "fs/netfs/main.c",
            "fs/netfs/objects.c",
            "fs/netfs/read_pgpriv2.c",
            "fs/netfs/rolling_buffer.c",
            "fs/netfs/write_issue.c",
            "include/linux/netfs.h",
            "include/linux/rolling_buffer.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.12",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.12",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.114",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.57",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.1.8",
              "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/15ed8a9b7c63e9171f5139a6aaa1ffb61809861f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1d78d56c43ef3768183e8370e7367b162700e049",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3f6d7f8a5416d852648d15a05e895f1195ee8a85",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b343252d6f536203dd0660f676190dcbf6d2ecdc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}