{"id":"CVE-2026-72441","state":"PUBLISHED","title":"ieee802154: fix kernel-infoleak in dgram_recvmsg()","description":"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`.","publishedAt":"2026-08-15T05:56:53.305Z","updatedAt":"2026-08-17T05:14:42.172Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"a2ee1a038a16e286d084bc293a7522d010a59ec3","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"09cfe665f2c5d7a8a5ed4d6b487434a011325368","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"c88e687e44cb9c7690f5039a5a5941dba1f6a204","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"71b5add66c51d6764325de5f2e300bbf4f39e7a6","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"fc8766467b53335220b4b594ba15bc8f8cee0c76","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"de3bd9809af7555611334cb6a071806744430ef7","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"f14802465f5956baafe5f4b4541eb626b06b41f1","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"4db86f8ab11b5a41bfc36680be837e6ac1375ec6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ieee802154/header_ops.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.15","versionType":"semver"},{"version":"5.10.261","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ieee802154/header_ops.c"]}],"references":["https://git.kernel.org/stable/c/a2ee1a038a16e286d084bc293a7522d010a59ec3","https://git.kernel.org/stable/c/09cfe665f2c5d7a8a5ed4d6b487434a011325368","https://git.kernel.org/stable/c/c88e687e44cb9c7690f5039a5a5941dba1f6a204","https://git.kernel.org/stable/c/71b5add66c51d6764325de5f2e300bbf4f39e7a6","https://git.kernel.org/stable/c/fc8766467b53335220b4b594ba15bc8f8cee0c76","https://git.kernel.org/stable/c/de3bd9809af7555611334cb6a071806744430ef7","https://git.kernel.org/stable/c/f14802465f5956baafe5f4b4541eb626b06b41f1","https://git.kernel.org/stable/c/4db86f8ab11b5a41bfc36680be837e6ac1375ec6"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72441.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72441","state":"PUBLISHED","datePublished":"2026-08-15T05:56:53.305Z","dateUpdated":"2026-08-17T05:14:42.172Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.930Z"},"containers":{"cna":{"title":"ieee802154: fix kernel-infoleak in dgram_recvmsg()","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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"a2ee1a038a16e286d084bc293a7522d010a59ec3","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"09cfe665f2c5d7a8a5ed4d6b487434a011325368","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"c88e687e44cb9c7690f5039a5a5941dba1f6a204","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"71b5add66c51d6764325de5f2e300bbf4f39e7a6","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"fc8766467b53335220b4b594ba15bc8f8cee0c76","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"de3bd9809af7555611334cb6a071806744430ef7","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"f14802465f5956baafe5f4b4541eb626b06b41f1","versionType":"git"},{"version":"94b4f6c21cf54029377a0645675a9d81b6cf890d","status":"affected","lessThan":"4db86f8ab11b5a41bfc36680be837e6ac1375ec6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ieee802154/header_ops.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.15","versionType":"semver"},{"version":"5.10.261","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ieee802154/header_ops.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:14:42.172Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}