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CVE-2026-72441 (GCVE-0-2026-72441)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:56 – Updated: 2026-08-17 05:14
VLAI
Title
ieee802154: fix kernel-infoleak in dgram_recvmsg()
Summary
In the Linux kernel, the following vulnerability has been resolved: ieee802154: fix kernel-infoleak in dgram_recvmsg() KMSAN reported a kernel-infoleak in move_addr_to_user(): BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:131 [inline] BUG: KMSAN: kernel-infoleak in _inline_copy_to_user include/linux/uaccess.h:205 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_user+0xcc/0x120 lib/usercopy.c:26 instrument_copy_to_user include/linux/instrumented.h:131 [inline] _inline_copy_to_user include/linux/uaccess.h:205 [inline] _copy_to_user+0xcc/0x120 lib/usercopy.c:26 copy_to_user include/linux/uaccess.h:236 [inline] move_addr_to_user+0x2e7/0x440 net/socket.c:302 ____sys_recvmsg+0x232/0x610 net/socket.c:2925 ... Uninit was stored to memory at: ieee802154_addr_to_sa include/net/ieee802154_netdev.h:369 [inline] dgram_recvmsg+0xa09/0xbe0 net/ieee802154/socket.c:739 The issue occurs because the `pan_id` field of `struct ieee802154_addr` is left uninitialized when the address mode is `IEEE802154_ADDR_NONE`. The execution flow is as follows: 1. `__ieee802154_rx_handle_packet()` declares a local `struct ieee802154_hdr hdr` on the stack. 2. `ieee802154_hdr_pull()` calls `ieee802154_hdr_get_addr()` to parse the source and destination addresses into this structure. 3. If the address mode is `IEEE802154_ADDR_NONE`, `ieee802154_hdr_get_addr()` previously only set the `mode` field, leaving the `pan_id` field containing uninitialized stack memory. 4. This uninitialized `pan_id` is later copied into a `struct sockaddr_ieee802154` in `dgram_recvmsg()` via `ieee802154_addr_to_sa()`. 5. Finally, `move_addr_to_user()` copies the socket address structure to user space, leaking the uninitialized bytes. Fix this by using `memset` to zero out the address structure in `ieee802154_hdr_get_addr()` when the mode is `IEEE802154_ADDR_NONE`.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 94b4f6c21cf54029377a0645675a9d81b6cf890d , < a2ee1a038a16e286d084bc293a7522d010a59ec3 (git)
Affected: 94b4f6c21cf54029377a0645675a9d81b6cf890d , < 09cfe665f2c5d7a8a5ed4d6b487434a011325368 (git)
Affected: 94b4f6c21cf54029377a0645675a9d81b6cf890d , < c88e687e44cb9c7690f5039a5a5941dba1f6a204 (git)
Affected: 94b4f6c21cf54029377a0645675a9d81b6cf890d , < 71b5add66c51d6764325de5f2e300bbf4f39e7a6 (git)
Affected: 94b4f6c21cf54029377a0645675a9d81b6cf890d , < fc8766467b53335220b4b594ba15bc8f8cee0c76 (git)
Affected: 94b4f6c21cf54029377a0645675a9d81b6cf890d , < de3bd9809af7555611334cb6a071806744430ef7 (git)
Affected: 94b4f6c21cf54029377a0645675a9d81b6cf890d , < f14802465f5956baafe5f4b4541eb626b06b41f1 (git)
Affected: 94b4f6c21cf54029377a0645675a9d81b6cf890d , < 4db86f8ab11b5a41bfc36680be837e6ac1375ec6 (git)
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Linux Linux Affected: 3.15
Unaffected: 0 , < 3.15 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154: fix kernel-infoleak in dgram_recvmsg()\n\nKMSAN reported a kernel-infoleak in move_addr_to_user():\n\nBUG: KMSAN: kernel-infoleak in instrument_copy_to_user\ninclude/linux/instrumented.h:131 [inline]\nBUG: KMSAN: kernel-infoleak in _inline_copy_to_user\ninclude/linux/uaccess.h:205 [inline]\nBUG: KMSAN: kernel-infoleak in _copy_to_user+0xcc/0x120\nlib/usercopy.c:26\n instrument_copy_to_user include/linux/instrumented.h:131 [inline]\n _inline_copy_to_user include/linux/uaccess.h:205 [inline]\n _copy_to_user+0xcc/0x120 lib/usercopy.c:26\n copy_to_user include/linux/uaccess.h:236 [inline]\n move_addr_to_user+0x2e7/0x440 net/socket.c:302\n ____sys_recvmsg+0x232/0x610 net/socket.c:2925\n ...\n Uninit was stored to memory at:\n ieee802154_addr_to_sa include/net/ieee802154_netdev.h:369 [inline]\n dgram_recvmsg+0xa09/0xbe0 net/ieee802154/socket.c:739\n\nThe issue occurs because the `pan_id` field of `struct ieee802154_addr`\nis left uninitialized when the address mode is `IEEE802154_ADDR_NONE`.\nThe execution flow is as follows:\n\n1. `__ieee802154_rx_handle_packet()` declares a local `struct\nieee802154_hdr hdr` on the stack.\n2. `ieee802154_hdr_pull()` calls `ieee802154_hdr_get_addr()` to parse\nthe source and destination addresses into this structure.\n3. If the address mode is `IEEE802154_ADDR_NONE`,\n`ieee802154_hdr_get_addr()` previously only set the `mode` field,\nleaving the `pan_id` field containing uninitialized stack memory.\n4. This uninitialized `pan_id` is later copied into a `struct\nsockaddr_ieee802154` in `dgram_recvmsg()` via `ieee802154_addr_to_sa()`.\n5. Finally, `move_addr_to_user()` copies the socket address structure to\nuser space, leaking the uninitialized bytes.\n\nFix this by using `memset` to zero out the address structure in\n`ieee802154_hdr_get_addr()` when the mode is `IEEE802154_ADDR_NONE`."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:14:42.172Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/a2ee1a038a16e286d084bc293a7522d010a59ec3"
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          "url": "https://git.kernel.org/stable/c/09cfe665f2c5d7a8a5ed4d6b487434a011325368"
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        },
        {
          "url": "https://git.kernel.org/stable/c/71b5add66c51d6764325de5f2e300bbf4f39e7a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/fc8766467b53335220b4b594ba15bc8f8cee0c76"
        },
        {
          "url": "https://git.kernel.org/stable/c/de3bd9809af7555611334cb6a071806744430ef7"
        },
        {
          "url": "https://git.kernel.org/stable/c/f14802465f5956baafe5f4b4541eb626b06b41f1"
        },
        {
          "url": "https://git.kernel.org/stable/c/4db86f8ab11b5a41bfc36680be837e6ac1375ec6"
        }
      ],
      "title": "ieee802154: fix kernel-infoleak in dgram_recvmsg()",
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    "cveId": "CVE-2026-72441",
    "datePublished": "2026-08-15T05:56:53.305Z",
    "dateReserved": "2026-08-09T03:40:39.930Z",
    "dateUpdated": "2026-08-17T05:14:42.172Z",
    "state": "PUBLISHED"
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      "cve": "CVE-2026-72441",
      "date": "2026-09-04",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-72441\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-15T06:22:17.937\",\"lastModified\":\"2026-08-17T06:19:11.477\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nieee802154: fix kernel-infoleak in dgram_recvmsg()\\n\\nKMSAN reported a kernel-infoleak in move_addr_to_user():\\n\\nBUG: KMSAN: kernel-infoleak in instrument_copy_to_user\\ninclude/linux/instrumented.h:131 [inline]\\nBUG: KMSAN: kernel-infoleak in _inline_copy_to_user\\ninclude/linux/uaccess.h:205 [inline]\\nBUG: KMSAN: kernel-infoleak in _copy_to_user+0xcc/0x120\\nlib/usercopy.c:26\\n instrument_copy_to_user include/linux/instrumented.h:131 [inline]\\n _inline_copy_to_user include/linux/uaccess.h:205 [inline]\\n _copy_to_user+0xcc/0x120 lib/usercopy.c:26\\n copy_to_user include/linux/uaccess.h:236 [inline]\\n move_addr_to_user+0x2e7/0x440 net/socket.c:302\\n ____sys_recvmsg+0x232/0x610 net/socket.c:2925\\n ...\\n Uninit was stored to memory at:\\n ieee802154_addr_to_sa include/net/ieee802154_netdev.h:369 [inline]\\n dgram_recvmsg+0xa09/0xbe0 net/ieee802154/socket.c:739\\n\\nThe issue occurs because the `pan_id` field of `struct ieee802154_addr`\\nis left uninitialized when the address mode is `IEEE802154_ADDR_NONE`.\\nThe execution flow is as follows:\\n\\n1. `__ieee802154_rx_handle_packet()` declares a local `struct\\nieee802154_hdr hdr` on the stack.\\n2. `ieee802154_hdr_pull()` calls `ieee802154_hdr_get_addr()` to parse\\nthe source and destination addresses into this structure.\\n3. If the address mode is `IEEE802154_ADDR_NONE`,\\n`ieee802154_hdr_get_addr()` previously only set the `mode` field,\\nleaving the `pan_id` field containing uninitialized stack memory.\\n4. This uninitialized `pan_id` is later copied into a `struct\\nsockaddr_ieee802154` in `dgram_recvmsg()` via `ieee802154_addr_to_sa()`.\\n5. Finally, `move_addr_to_user()` copies the socket address structure to\\nuser space, leaking the uninitialized bytes.\\n\\nFix this by using `memset` to zero out the address structure in\\n`ieee802154_hdr_get_addr()` when the mode is `IEEE802154_ADDR_NONE`.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/ieee802154/header_ops.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"94b4f6c21cf54029377a0645675a9d81b6cf890d\",\"lessThan\":\"a2ee1a038a16e286d084bc293a7522d010a59ec3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"94b4f6c21cf54029377a0645675a9d81b6cf890d\",\"lessThan\":\"09cfe665f2c5d7a8a5ed4d6b487434a011325368\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"94b4f6c21cf54029377a0645675a9d81b6cf890d\",\"lessThan\":\"c88e687e44cb9c7690f5039a5a5941dba1f6a204\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"94b4f6c21cf54029377a0645675a9d81b6cf890d\",\"lessThan\":\"71b5add66c51d6764325de5f2e300bbf4f39e7a6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"94b4f6c21cf54029377a0645675a9d81b6cf890d\",\"lessThan\":\"fc8766467b53335220b4b594ba15bc8f8cee0c76\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"94b4f6c21cf54029377a0645675a9d81b6cf890d\",\"lessThan\":\"de3bd9809af7555611334cb6a071806744430ef7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"94b4f6c21cf54029377a0645675a9d81b6cf890d\",\"lessThan\":\"f14802465f5956baafe5f4b4541eb626b06b41f1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"94b4f6c21cf54029377a0645675a9d81b6cf890d\",\"lessThan\":\"4db86f8ab11b5a41bfc36680be837e6ac1375ec6\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/ieee802154/header_ops.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.97\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/09cfe665f2c5d7a8a5ed4d6b487434a011325368\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4db86f8ab11b5a41bfc36680be837e6ac1375ec6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/71b5add66c51d6764325de5f2e300bbf4f39e7a6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a2ee1a038a16e286d084bc293a7522d010a59ec3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c88e687e44cb9c7690f5039a5a5941dba1f6a204\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/de3bd9809af7555611334cb6a071806744430ef7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f14802465f5956baafe5f4b4541eb626b06b41f1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fc8766467b53335220b4b594ba15bc8f8cee0c76\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-18T14:33:32+00:00",
      "cve": "CVE-2026-72441",
      "id": "CVE-2026-72441",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ieee802154: fix kernel-infoleak in dgram_recvmsg()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72441.json",
      "version": "3"
    }
  }
}



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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.