github - ghsa-5xmf-424g-jjhg

ghsa-5xmf-424g-jjhg

Vulnerability from github

Published

2025-09-16 15:32

Modified

2025-09-16 15:32

Details

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

io_uring/kbuf: fix signedness in this_len calculation

When importing and using buffers, buf->len is considered unsigned. However, buf->len is converted to signed int when committing. This can lead to unexpected behavior if the buffer is large enough to be interpreted as a negative value. Make min_t calculation unsigned.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-39822"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-16T13:15:59Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/kbuf: fix signedness in this_len calculation\n\nWhen importing and using buffers, buf-\u003elen is considered unsigned.\nHowever, buf-\u003elen is converted to signed int when committing. This can\nlead to unexpected behavior if the buffer is large enough to be\ninterpreted as a negative value. Make min_t calculation unsigned.",
  "id": "GHSA-5xmf-424g-jjhg",
  "modified": "2025-09-16T15:32:35Z",
  "published": "2025-09-16T15:32:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39822"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c64eff368ac676e8540344d27a3de47e0ad90d21"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f4f411c068402c370c4f9a9d4950a97af97bbbb1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-39822 (GCVE-0-2025-39822)

Vulnerability from cvelistv5

Published

2025-09-16 13:00

Modified

2025-09-29 06:00

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: fix signedness in this_len calculation When importing and using buffers, buf->len is considered unsigned. However, buf->len is converted to signed int when committing. This can lead to unexpected behavior if the buffer is large enough to be interpreted as a negative value. Make min_t calculation unsigned.

References

URL

Tags

	https://git.kernel.org/stable/c/f4f411c068402c370c4f9a9d4950a97af97bbbb1
	https://git.kernel.org/stable/c/c64eff368ac676e8540344d27a3de47e0ad90d21

Impacted products

Vendor

Product

Version

Version: ae98dbf43d755b4e111fcd086e53939bef3e9a1a
Version: ae98dbf43d755b4e111fcd086e53939bef3e9a1a

Version: 6.12

Show details on NVD website

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    "datePublished": "2025-09-16T13:00:21.533Z",
    "dateReserved": "2025-04-16T07:20:57.139Z",
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    "state": "PUBLISHED"
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