GHSA-RRPQ-4XMF-C84J未知未审查

无摘要

OSV 1.4.0 · unreviewed · 修改于 2026-08-23 02:30

发布时间

2026-08-23 02:30

GitHub 审查时间

—

NVD 发布时间

2026-08-23 00:16

源文件

advisories/unreviewed/2026/08/GHSA-rrpq-4xmf-c84j/GHSA-rrpq-4xmf-c84j.json

公告说明

In the Linux kernel, the following vulnerability has been resolved:

xfs: handle NULL b_addr in xfs_buf_free

When xfs_buf_alloc_backing_mem() fails, xfs_buf_free() is called with bp->b_addr still NULL. The code falls through to the folio_put path which calls virt_to_folio(NULL), dereferencing an invalid address and causing a kernel crash.

Call Trace: xfs_buf_free+0x25f/0x510 xfs_buf_alloc+0xc98/0x19b0 xfs_buf_find_insert+0x55/0x14d0 xfs_buf_get_map+0x122b/0x17c0 xfbtree_init_leaf_block+0x11c/0x4a0 xfbtree_init+0x1bb/0x460 xrep_rmap_setup_scan+0x100/0x1f0 xrep_rmapbt+0x41/0xc0

Fix this by skipping folio_put() when bp->b_addr is NULL.

受影响的软件包

该公告没有提供结构化的受影响软件包信息。

参考链接

ADVISORY

标识信息

别名 / CVE

CVE-2026-74728

CWE

无

软件生态

无

扩展资料

暂无扩展资料。

CVSS 评分

没有 CVSS 数据。

原始 OSV JSON

{
  "id": "GHSA-rrpq-4xmf-c84j",
  "aliases": [
    "CVE-2026-74728"
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: handle NULL b_addr in xfs_buf_free\n\nWhen xfs_buf_alloc_backing_mem() fails, xfs_buf_free() is called with\nbp->b_addr still NULL.  The code falls through to the folio_put path\nwhich calls virt_to_folio(NULL), dereferencing an invalid address and\ncausing a kernel crash.\n\n Call Trace:\n  xfs_buf_free+0x25f/0x510\n  xfs_buf_alloc+0xc98/0x19b0\n  xfs_buf_find_insert+0x55/0x14d0\n  xfs_buf_get_map+0x122b/0x17c0\n  xfbtree_init_leaf_block+0x11c/0x4a0\n  xfbtree_init+0x1bb/0x460\n  xrep_rmap_setup_scan+0x100/0x1f0\n  xrep_rmapbt+0x41/0xc0\n\nFix this by skipping folio_put() when bp->b_addr is NULL.",
  "affected": [],
  "modified": "2026-08-22T18:30:30Z",
  "severity": [],
  "published": "2026-08-22T18:30:30Z",
  "references": [
    {
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74728",
      "type": "ADVISORY"
    },
    {
      "url": "https://git.kernel.org/stable/c/3aa0c1d23ee1b9d9b340fb2f4736536e1408d706",
      "type": "WEB"
    },
    {
      "url": "https://git.kernel.org/stable/c/ccf6738adcafa5ddbddc4e71b45d8a51b86643c7",
      "type": "WEB"
    },
    {
      "url": "https://git.kernel.org/stable/c/d852729c5f4f830fbe7413df032e29459b3daf83",
      "type": "WEB"
    }
  ],
  "schema_version": "1.4.0",
  "database_specific": {
    "cwe_ids": [],
    "severity": null,
    "github_reviewed": false,
    "nvd_published_at": "2026-08-22T16:16:47Z",
    "github_reviewed_at": null
  }
}