GHSA-HPQG-3XXV-RHJ6

Vulnerability from github – Published: 2024-10-21 18:30 – Updated: 2026-05-12 12:32
VLAI
Details

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

wifi: ath9k_htc: Use __skb_set_length() for resetting urb before resubmit

Syzbot points out that skb_trim() has a sanity check on the existing length of the skb, which can be uninitialised in some error paths. The intent here is clearly just to reset the length to zero before resubmitting, so switch to calling __skb_set_length(skb, 0) directly. In addition, __skb_set_length() already contains a call to skb_reset_tail_pointer(), so remove the redundant call.

The syzbot report came from ath9k_hif_usb_reg_in_cb(), but there's a similar usage of skb_trim() in ath9k_hif_usb_rx_cb(), change both while we're at it.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-49938"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-824"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T18:15:15Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k_htc: Use __skb_set_length() for resetting urb before resubmit\n\nSyzbot points out that skb_trim() has a sanity check on the existing length of\nthe skb, which can be uninitialised in some error paths. The intent here is\nclearly just to reset the length to zero before resubmitting, so switch to\ncalling __skb_set_length(skb, 0) directly. In addition, __skb_set_length()\nalready contains a call to skb_reset_tail_pointer(), so remove the redundant\ncall.\n\nThe syzbot report came from ath9k_hif_usb_reg_in_cb(), but there\u0027s a similar\nusage of skb_trim() in ath9k_hif_usb_rx_cb(), change both while we\u0027re at it.",
  "id": "GHSA-hpqg-3xxv-rhj6",
  "modified": "2026-05-12T12:32:11Z",
  "published": "2024-10-21T18:30:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49938"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/012ae530afa0785102360de452745d33c99a321b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c230210ec0ae6ed08306ac70dc21c24b817bb95"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6a875220670475d9247e576c15dc29823100a4e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94745807f3ebd379f23865e6dab196f220664179"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a9f4e28e8adaf0715bd4e01462af0a52ee46b01f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b02eb7c86ff2ef1411c3095ec8a52b13f68db04f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d1f2fbc6a769081503f6ffedbb5cd1ac497f0e77"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e37e348835032d6940ec89308cc8996ded691d2d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6b9bf32e0695e4f374674002de0527d2a6768eb"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.