CVE-2026-64571 (GCVE-0-2026-64571)

Vulnerability from cvelistv5 – Published: 2026-08-05 08:08 – Updated: 2026-08-05 08:08
VLAI
Title
wifi: p54: validate RX frame length in p54_rx_eeprom_readback()
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: p54: validate RX frame length in p54_rx_eeprom_readback() p54_rx_eeprom_readback() copies the requested EEPROM slice out of a device-supplied readback frame without checking that the skb actually holds that many bytes. Commit da1b9a55ff11 ("wifi: p54: prevent buffer-overflow in p54_rx_eeprom_readback()") closed the destination overflow by copying a fixed priv->eeprom_slice_size (and rejecting a mismatched advertised len), but the source side is still unbounded: nothing verifies the frame is long enough to supply that many bytes. A malicious USB device can send a short frame whose advertised len matches priv->eeprom_slice_size while the payload is truncated. The equality check passes and memcpy() reads past the end of the skb, leaking adjacent heap: BUG: KASAN: slab-out-of-bounds in p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507) Read of size 1016 at addr ffff88800f077114 by task swapper/0/0 Call Trace: <IRQ> ... __asan_memcpy (mm/kasan/shadow.c:105) p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507) p54u_rx_cb (drivers/net/wireless/intersil/p54/p54usb.c:163) __usb_hcd_giveback_urb (drivers/usb/core/hcd.c:1657) dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:2005) ... </IRQ> The buggy address belongs to the object at ffff88800f0770c0 which belongs to the cache skbuff_small_head of size 704 The buggy address is located 84 bytes inside of allocated 704-byte region [ffff88800f0770c0, ffff88800f077380) Check that the slice fits in the skb before copying.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7cb770729ba895f73253dfcd46c3fcba45d896f9 , < 25c3b85af3fc4f8043159b14e65790fc3bbdaf48 (git)
Affected: 7cb770729ba895f73253dfcd46c3fcba45d896f9 , < f46f8f9c43fd02f4dd5f716d4bda296a523c04f0 (git)
Affected: 7cb770729ba895f73253dfcd46c3fcba45d896f9 , < d38f5d868a0a4770e3bcd0925e16c46acdbc9509 (git)
Affected: 7cb770729ba895f73253dfcd46c3fcba45d896f9 , < 9096e1f7014174067239a63df18ae5f28301990d (git)
Affected: 7cb770729ba895f73253dfcd46c3fcba45d896f9 , < ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea (git)
Create a notification for this product.
Linux Linux Affected: 2.6.28
Unaffected: 0 , < 2.6.28 (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-rc4 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/intersil/p54/txrx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "25c3b85af3fc4f8043159b14e65790fc3bbdaf48",
              "status": "affected",
              "version": "7cb770729ba895f73253dfcd46c3fcba45d896f9",
              "versionType": "git"
            },
            {
              "lessThan": "f46f8f9c43fd02f4dd5f716d4bda296a523c04f0",
              "status": "affected",
              "version": "7cb770729ba895f73253dfcd46c3fcba45d896f9",
              "versionType": "git"
            },
            {
              "lessThan": "d38f5d868a0a4770e3bcd0925e16c46acdbc9509",
              "status": "affected",
              "version": "7cb770729ba895f73253dfcd46c3fcba45d896f9",
              "versionType": "git"
            },
            {
              "lessThan": "9096e1f7014174067239a63df18ae5f28301990d",
              "status": "affected",
              "version": "7cb770729ba895f73253dfcd46c3fcba45d896f9",
              "versionType": "git"
            },
            {
              "lessThan": "ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea",
              "status": "affected",
              "version": "7cb770729ba895f73253dfcd46c3fcba45d896f9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/intersil/p54/txrx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.28"
            },
            {
              "lessThan": "2.6.28",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.148",
                  "versionStartIncluding": "2.6.28",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.101",
                  "versionStartIncluding": "2.6.28",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.42",
                  "versionStartIncluding": "2.6.28",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.6",
                  "versionStartIncluding": "2.6.28",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2-rc4",
                  "versionStartIncluding": "2.6.28",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: p54: validate RX frame length in p54_rx_eeprom_readback()\n\np54_rx_eeprom_readback() copies the requested EEPROM slice out of a\ndevice-supplied readback frame without checking that the skb actually holds\nthat many bytes. Commit da1b9a55ff11 (\"wifi: p54: prevent buffer-overflow in\np54_rx_eeprom_readback()\") closed the destination overflow by copying a\nfixed priv-\u003eeeprom_slice_size (and rejecting a mismatched advertised len),\nbut the source side is still unbounded: nothing verifies the frame is long\nenough to supply that many bytes.\n\nA malicious USB device can send a short frame whose advertised len matches\npriv-\u003eeeprom_slice_size while the payload is truncated. The equality check\npasses and memcpy() reads past the end of the skb, leaking adjacent heap:\n\n  BUG: KASAN: slab-out-of-bounds in p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)\n  Read of size 1016 at addr ffff88800f077114 by task swapper/0/0\n  Call Trace:\n   \u003cIRQ\u003e\n   ...\n   __asan_memcpy (mm/kasan/shadow.c:105)\n   p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)\n   p54u_rx_cb (drivers/net/wireless/intersil/p54/p54usb.c:163)\n   __usb_hcd_giveback_urb (drivers/usb/core/hcd.c:1657)\n   dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:2005)\n   ...\n   \u003c/IRQ\u003e\n\n  The buggy address belongs to the object at ffff88800f0770c0\n   which belongs to the cache skbuff_small_head of size 704\n  The buggy address is located 84 bytes inside of\n   allocated 704-byte region [ffff88800f0770c0, ffff88800f077380)\n\nCheck that the slice fits in the skb before copying."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:08:08.466Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/25c3b85af3fc4f8043159b14e65790fc3bbdaf48"
        },
        {
          "url": "https://git.kernel.org/stable/c/f46f8f9c43fd02f4dd5f716d4bda296a523c04f0"
        },
        {
          "url": "https://git.kernel.org/stable/c/d38f5d868a0a4770e3bcd0925e16c46acdbc9509"
        },
        {
          "url": "https://git.kernel.org/stable/c/9096e1f7014174067239a63df18ae5f28301990d"
        },
        {
          "url": "https://git.kernel.org/stable/c/ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea"
        }
      ],
      "title": "wifi: p54: validate RX frame length in p54_rx_eeprom_readback()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64571",
    "datePublished": "2026-08-05T08:08:08.466Z",
    "dateReserved": "2026-07-19T15:36:31.797Z",
    "dateUpdated": "2026-08-05T08:08:08.466Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64571",
      "date": "2026-08-06",
      "epss": "0.00156",
      "percentile": "0.05259"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64571\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-05T08:16:36.797\",\"lastModified\":\"2026-08-05T08:16:36.797\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: p54: validate RX frame length in p54_rx_eeprom_readback()\\n\\np54_rx_eeprom_readback() copies the requested EEPROM slice out of a\\ndevice-supplied readback frame without checking that the skb actually holds\\nthat many bytes. Commit da1b9a55ff11 (\\\"wifi: p54: prevent buffer-overflow in\\np54_rx_eeprom_readback()\\\") closed the destination overflow by copying a\\nfixed priv-\u003eeeprom_slice_size (and rejecting a mismatched advertised len),\\nbut the source side is still unbounded: nothing verifies the frame is long\\nenough to supply that many bytes.\\n\\nA malicious USB device can send a short frame whose advertised len matches\\npriv-\u003eeeprom_slice_size while the payload is truncated. The equality check\\npasses and memcpy() reads past the end of the skb, leaking adjacent heap:\\n\\n  BUG: KASAN: slab-out-of-bounds in p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)\\n  Read of size 1016 at addr ffff88800f077114 by task swapper/0/0\\n  Call Trace:\\n   \u003cIRQ\u003e\\n   ...\\n   __asan_memcpy (mm/kasan/shadow.c:105)\\n   p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)\\n   p54u_rx_cb (drivers/net/wireless/intersil/p54/p54usb.c:163)\\n   __usb_hcd_giveback_urb (drivers/usb/core/hcd.c:1657)\\n   dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:2005)\\n   ...\\n   \u003c/IRQ\u003e\\n\\n  The buggy address belongs to the object at ffff88800f0770c0\\n   which belongs to the cache skbuff_small_head of size 704\\n  The buggy address is located 84 bytes inside of\\n   allocated 704-byte region [ffff88800f0770c0, ffff88800f077380)\\n\\nCheck that the slice fits in the skb before copying.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/wireless/intersil/p54/txrx.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"7cb770729ba895f73253dfcd46c3fcba45d896f9\",\"lessThan\":\"25c3b85af3fc4f8043159b14e65790fc3bbdaf48\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7cb770729ba895f73253dfcd46c3fcba45d896f9\",\"lessThan\":\"f46f8f9c43fd02f4dd5f716d4bda296a523c04f0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7cb770729ba895f73253dfcd46c3fcba45d896f9\",\"lessThan\":\"d38f5d868a0a4770e3bcd0925e16c46acdbc9509\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7cb770729ba895f73253dfcd46c3fcba45d896f9\",\"lessThan\":\"9096e1f7014174067239a63df18ae5f28301990d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7cb770729ba895f73253dfcd46c3fcba45d896f9\",\"lessThan\":\"ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/wireless/intersil/p54/txrx.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.28\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.28\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.148\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.101\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.42\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.6\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc4\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/25c3b85af3fc4f8043159b14e65790fc3bbdaf48\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9096e1f7014174067239a63df18ae5f28301990d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d38f5d868a0a4770e3bcd0925e16c46acdbc9509\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f46f8f9c43fd02f4dd5f716d4bda296a523c04f0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-08-06T12:51:55+00:00",
      "cve": "CVE-2026-64571",
      "id": "CVE-2026-64571",
      "initial_release_date": "2026-08-05T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: p54: validate RX frame length in p54_rx_eeprom_readback()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64571.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "critical",
      "current_release_date": "2026-08-06T01:06:27Z",
      "cve": "CVE-2026-64571",
      "id": "CVE-2026-64571",
      "initial_release_date": "2026-08-06T01:06:27Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64571",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64571.json",
      "version": "2"
    }
  }
}



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.