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CVE-2026-72441: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    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`.

    Засегнати продукти

    • Linux Linux: 94b4f6c21cf54029377a0645675a9d81b6cf890d преди a2ee1a038a16e286d084bc293a7522d010a59ec3; 94b4f6c21cf54029377a0645675a9d81b6cf890d преди 09cfe665f2c5d7a8a5ed4d6b487434a011325368; 94b4f6c21cf54029377a0645675a9d81b6cf890d преди c88e687e44cb9c7690f5039a5a5941dba1f6a204; 94b4f6c21cf54029377a0645675a9d81b6cf890d преди 71b5add66c51d6764325de5f2e300bbf4f39e7a6; 94b4f6c21cf54029377a0645675a9d81b6cf890d преди fc8766467b53335220b4b594ba15bc8f8cee0c76; 94b4f6c21cf54029377a0645675a9d81b6cf890d преди de3bd9809af7555611334cb6a071806744430ef7; 94b4f6c21cf54029377a0645675a9d81b6cf890d преди f14802465f5956baafe5f4b4541eb626b06b41f1; 94b4f6c21cf54029377a0645675a9d81b6cf890d преди 4db86f8ab11b5a41bfc36680be837e6ac1375ec6
    • Linux Linux: 3.15; преди 3.15; 5.10.261 до 5.10.*; 5.15.212 до 5.15.*; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; 7.2 до *

    История

    • 15 август 2026 Публикувано

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    Първоизточници

    CVE-2026-72441: Linux | freedomonline.bg