{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72441", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.930Z", "datePublished": "2026-08-15T05:56:53.305Z", "dateUpdated": "2026-08-17T05:14:42.172Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:14:42.172Z" }, "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": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/ieee802154/header_ops.c" ], "versions": [ { "version": "94b4f6c21cf54029377a0645675a9d81b6cf890d", "lessThan": "a2ee1a038a16e286d084bc293a7522d010a59ec3", "status": "affected", "versionType": "git" }, { "version": "94b4f6c21cf54029377a0645675a9d81b6cf890d", "lessThan": "09cfe665f2c5d7a8a5ed4d6b487434a011325368", "status": "affected", "versionType": "git" }, { "version": "94b4f6c21cf54029377a0645675a9d81b6cf890d", "lessThan": "c88e687e44cb9c7690f5039a5a5941dba1f6a204", "status": "affected", "versionType": "git" }, { "version": "94b4f6c21cf54029377a0645675a9d81b6cf890d", "lessThan": "71b5add66c51d6764325de5f2e300bbf4f39e7a6", "status": "affected", "versionType": "git" }, { "version": "94b4f6c21cf54029377a0645675a9d81b6cf890d", "lessThan": "fc8766467b53335220b4b594ba15bc8f8cee0c76", "status": "affected", "versionType": "git" }, { "version": "94b4f6c21cf54029377a0645675a9d81b6cf890d", "lessThan": "de3bd9809af7555611334cb6a071806744430ef7", "status": "affected", "versionType": "git" }, { "version": "94b4f6c21cf54029377a0645675a9d81b6cf890d", "lessThan": "f14802465f5956baafe5f4b4541eb626b06b41f1", "status": "affected", "versionType": "git" }, { "version": "94b4f6c21cf54029377a0645675a9d81b6cf890d", "lessThan": "4db86f8ab11b5a41bfc36680be837e6ac1375ec6", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/ieee802154/header_ops.c" ], "versions": [ { "version": "3.15", "status": "affected" }, { "version": "0", "lessThan": "3.15", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "5.10.261" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "5.15.212" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "6.1.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "6.6.145" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "6.12.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "6.18.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/a2ee1a038a16e286d084bc293a7522d010a59ec3" }, { "url": "https://git.kernel.org/stable/c/09cfe665f2c5d7a8a5ed4d6b487434a011325368" }, { "url": "https://git.kernel.org/stable/c/c88e687e44cb9c7690f5039a5a5941dba1f6a204" }, { "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()", "x_generator": { "engine": "bippy-1.2.0" } } } }