github - ghsa-p6hq-6vgx-547f

ghsa-p6hq-6vgx-547f

Vulnerability from github

Published

2024-05-22 09:31

Modified

2024-05-22 09:31

Details

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

ocfs2: mount fails with buffer overflow in strlen

Starting with kernel 5.11 built with CONFIG_FORTIFY_SOURCE mouting an ocfs2 filesystem with either o2cb or pcmk cluster stack fails with the trace below. Problem seems to be that strings for cluster stack and cluster name are not guaranteed to be null terminated in the disk representation, while strlcpy assumes that the source string is always null terminated. This causes a read outside of the source string triggering the buffer overflow detection.

detected buffer overflow in strlen ------------[ cut here ]------------ kernel BUG at lib/string.c:1149! invalid opcode: 0000 [#1] SMP PTI CPU: 1 PID: 910 Comm: mount.ocfs2 Not tainted 5.14.0-1-amd64 #1 Debian 5.14.6-2 RIP: 0010:fortify_panic+0xf/0x11 ... Call Trace: ocfs2_initialize_super.isra.0.cold+0xc/0x18 [ocfs2] ocfs2_fill_super+0x359/0x19b0 [ocfs2] mount_bdev+0x185/0x1b0 legacy_get_tree+0x27/0x40 vfs_get_tree+0x25/0xb0 path_mount+0x454/0xa20 __x64_sys_mount+0x103/0x140 do_syscall_64+0x3b/0xc0 entry_SYSCALL_64_after_hwframe+0x44/0xae

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47458"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-22T07:15:10Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: mount fails with buffer overflow in strlen\n\nStarting with kernel 5.11 built with CONFIG_FORTIFY_SOURCE mouting an\nocfs2 filesystem with either o2cb or pcmk cluster stack fails with the\ntrace below.  Problem seems to be that strings for cluster stack and\ncluster name are not guaranteed to be null terminated in the disk\nrepresentation, while strlcpy assumes that the source string is always\nnull terminated.  This causes a read outside of the source string\ntriggering the buffer overflow detection.\n\n  detected buffer overflow in strlen\n  ------------[ cut here ]------------\n  kernel BUG at lib/string.c:1149!\n  invalid opcode: 0000 [#1] SMP PTI\n  CPU: 1 PID: 910 Comm: mount.ocfs2 Not tainted 5.14.0-1-amd64 #1\n    Debian 5.14.6-2\n  RIP: 0010:fortify_panic+0xf/0x11\n  ...\n  Call Trace:\n   ocfs2_initialize_super.isra.0.cold+0xc/0x18 [ocfs2]\n   ocfs2_fill_super+0x359/0x19b0 [ocfs2]\n   mount_bdev+0x185/0x1b0\n   legacy_get_tree+0x27/0x40\n   vfs_get_tree+0x25/0xb0\n   path_mount+0x454/0xa20\n   __x64_sys_mount+0x103/0x140\n   do_syscall_64+0x3b/0xc0\n   entry_SYSCALL_64_after_hwframe+0x44/0xae",
  "id": "GHSA-p6hq-6vgx-547f",
  "modified": "2024-05-22T09:31:45Z",
  "published": "2024-05-22T09:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47458"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e677ea5b7396f715a76b6b0ef441430e4c4b57f"
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      "url": "https://git.kernel.org/stable/c/232ed9752510de4436468b653d145565669c8498"
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  "schema_version": "1.4.0",
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}

cve-2021-47458

Vulnerability from cvelistv5

Published

2024-05-22 06:19

Modified

2024-11-04 12:06

Severity ?

Summary

ocfs2: mount fails with buffer overflow in strlen

References

▼	URL	Tags
	https://git.kernel.org/stable/c/ac011cb3ff7a76b3e0e6e77158ee4ba2f929e1fb
	https://git.kernel.org/stable/c/4b74ddcc22ee6455946e80a9c4808801f8f8561e
	https://git.kernel.org/stable/c/232ed9752510de4436468b653d145565669c8498
	https://git.kernel.org/stable/c/7623b1035ca2d17bde0f6a086ad6844a34648df1
	https://git.kernel.org/stable/c/d3a83576378b4c904f711598dde2c5e881c4295c
	https://git.kernel.org/stable/c/93be0eeea14cf39235e585c8f56df3b3859deaad
	https://git.kernel.org/stable/c/0e677ea5b7396f715a76b6b0ef441430e4c4b57f
	https://git.kernel.org/stable/c/b15fa9224e6e1239414525d8d556d824701849fc

Impacted products

▼	Vendor	Product
	Linux	Linux
	Linux	Linux

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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