CVE-2026-68369 (GCVE-0-2026-68369)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:03 – Updated: 2026-08-19 16:34
VLAI
Title
usb: gadget: printer: fix infinite loop in printer_read()
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: printer: fix infinite loop in printer_read() printer_read() uses the same variable for the requested copy size and the number of bytes actually copied to user space. copy_to_user() returns the number of bytes not copied, so when it fails to copy anything, the computed copied length becomes zero. In that case len, buf, current_rx_bytes and current_rx_buf are left unchanged. If RX data is available and the user buffer remains unwritable, the read loop can repeat indefinitely. Track the copied length separately and return -EFAULT, or the number of bytes already copied, if an iteration makes no progress.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b185f01a9ab7af586133be2555298e960237359b , < 3f81197364b57e5318620c75f3bd63f405f60552 (git)
Affected: b185f01a9ab7af586133be2555298e960237359b , < e225e2998e5a9b83c838dbbe4511fb0d63f88daf (git)
Affected: b185f01a9ab7af586133be2555298e960237359b , < 3081b0e187065c3b9577e393ad664b12854aeaf3 (git)
Affected: b185f01a9ab7af586133be2555298e960237359b , < 994afccfdcceb73be33f69a8a8ea71e260c9eca5 (git)
Affected: b185f01a9ab7af586133be2555298e960237359b , < e03597ad9494b500344076589aeaa6c6d2d381d3 (git)
Affected: b185f01a9ab7af586133be2555298e960237359b , < 4cde0b38cc0cb8b7dc17295801015148de37d1d2 (git)
Affected: b185f01a9ab7af586133be2555298e960237359b , < e41bbbbb1740ce4d7270ab1cdeca13892d6a8d2e (git)
Affected: b185f01a9ab7af586133be2555298e960237359b , < c2e819be6a5c7f34344926b4bd7e3dfca58cf48a (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.1
Unaffected: 0 , < 4.1 (semver)
Unaffected: 5.10.265 , ≤ 5.10.* (semver)
Unaffected: 5.15.216 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: printer: fix infinite loop in printer_read()\n\nprinter_read() uses the same variable for the requested copy size and\nthe number of bytes actually copied to user space. copy_to_user()\nreturns the number of bytes not copied, so when it fails to copy\nanything, the computed copied length becomes zero.\n\nIn that case len, buf, current_rx_bytes and current_rx_buf are left\nunchanged. If RX data is available and the user buffer remains\nunwritable, the read loop can repeat indefinitely.\n\nTrack the copied length separately and return -EFAULT, or the number of\nbytes already copied, if an iteration makes no progress."
        }
      ],
      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/e225e2998e5a9b83c838dbbe4511fb0d63f88daf"
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      "title": "usb: gadget: printer: fix infinite loop in printer_read()",
      "x_generator": {
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    "datePublished": "2026-08-10T12:03:46.845Z",
    "dateReserved": "2026-07-30T09:28:09.386Z",
    "dateUpdated": "2026-08-19T16:34:28.812Z",
    "state": "PUBLISHED"
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        "descriptions": [
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: printer: fix infinite loop in printer_read()\n\nprinter_read() uses the same variable for the requested copy size and\nthe number of bytes actually copied to user space. copy_to_user()\nreturns the number of bytes not copied, so when it fails to copy\nanything, the computed copied length becomes zero.\n\nIn that case len, buf, current_rx_bytes and current_rx_buf are left\nunchanged. If RX data is available and the user buffer remains\nunwritable, the read loop can repeat indefinitely.\n\nTrack the copied length separately and return -EFAULT, or the number of\nbytes already copied, if an iteration makes no progress."
          }
        ],
        "id": "CVE-2026-68369",
        "lastModified": "2026-08-19T17:20:46.477",
        "metrics": {},
        "published": "2026-08-10T13:20:29.670",
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    "redhat_vex": {
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      "current_release_date": "2026-08-31T11:23:49+00:00",
      "cve": "CVE-2026-68369",
      "id": "CVE-2026-68369",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_affected": "1",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: usb: gadget: printer: fix infinite loop in printer_read()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68369.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-18T00:31:14Z",
      "cve": "CVE-2026-68369",
      "id": "CVE-2026-68369",
      "initial_release_date": "2026-08-14T17:13:48Z",
      "product_status:known_affected": "671",
      "product_status:known_not_affected": "60",
      "product_status:recommended": "107",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68369",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68369.json",
      "version": "10"
    }
  }
}



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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.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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