Vulnerability in linux (DEBIAN-CVE-2026-72441)
Summary
Vulnerability in linux (DEBIAN-CVE-2026-72441). Risk of unauthorized operations or information disclosure. Exploitable via pan_id. Mitigation: upgrade to 6.1.180-1 or later.
Original description
The description as published by the source.
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.…
Source: OSV.dev (Open Source Vulnerabilities) OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as DEBIAN-CVE-2026-72441 has been found in linux.
Attackers can target a specific entry point like pan_id over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade linux to 6.1.180-1 or later.
If unsure, ask your IT team or search "linux DEBIAN-CVE-2026-72441" on the vendor's site.
DEBIAN-CVE-2026-72441 (linux)
Attack surface: pan_id / IEEE802154_ADDR_NONE / mode / memset
Patched: 6.1.180-1 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (unclassified) exists in linux. Attackers reach the vulnerable code path via pan_id.
Check the vendor advisory for the affected versions of linux. Attack surface: pan_id / IEEE802154_ADDR_NONE / mode / memset.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 6.1.180-1.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'linux' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'linux' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
linuxを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade linux to 6.1.180-1ステージング環境で 6.1.180-1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
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3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory security-tracker.debian.org