CVE-2026-72441
ieee802154: fix kernel-infoleak in dgram_recvmsg()
Description
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`.
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 15, 2026, 6:22 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-72441
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Zero out the address structure using memset.
- Initialize pan_id field when address mode is IEEE802154_ADDR_NONE.
- Ensure proper initialization in ieee802154_hdr_get_addr().
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-72441.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72441 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72441
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-72441 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72441 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', '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'}], 'programFiles': ['net/ieee802154/header_ops.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.15'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.15', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/ieee802154/header_ops.c'], 'defaultStatus': 'affected'}] Added Description 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`. Added Reference https://git.kernel.org/stable/c/09cfe665f2c5d7a8a5ed4d6b487434a011325368 Added Reference https://git.kernel.org/stable/c/4db86f8ab11b5a41bfc36680be837e6ac1375ec6 Added Reference https://git.kernel.org/stable/c/71b5add66c51d6764325de5f2e300bbf4f39e7a6 Added Reference https://git.kernel.org/stable/c/a2ee1a038a16e286d084bc293a7522d010a59ec3 Added Reference https://git.kernel.org/stable/c/c88e687e44cb9c7690f5039a5a5941dba1f6a204 Added Reference https://git.kernel.org/stable/c/de3bd9809af7555611334cb6a071806744430ef7 Added Reference https://git.kernel.org/stable/c/f14802465f5956baafe5f4b4541eb626b06b41f1 Added Reference https://git.kernel.org/stable/c/fc8766467b53335220b4b594ba15bc8f8cee0c76