7.1

CVE-2026-72049: ieee802154: admin-gate legacy LLSEC dump operations

Received
AliasesUBUNTU-CVE-2026-72049DEBIAN-CVE-2026-72049
Published 15-08-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-72049 is a high (CVSS 7.1) Missing Authorization vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.1, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.14%
0%100%
Low · -0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 17 · Related 16
SUSE-SU-2026:5091-1USN-8875-1USN-8875-2USN-8876-1USN-8877-1USN-8878-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ieee802154: admin-gate legacy LLSEC dump operations In net/ieee802154/netlink.c, the legacy IEEE802154_NL family ops table builds the LLSEC dump entries (LLSEC_LIST_KEY, LLSEC_LIST_DEV, LLSEC_LIST_DEVKEY, LLSEC_LIST_SECLEVEL) with IEEE802154_DUMP() which sets no .flags, so generic netlink runs them ungated. The modern nl802154 family admin-gates the equivalent reads via NL802154_CMD_GET_SEC_KEY and friends with .flags = GENL_ADMIN_PERM. Any local uid that can open AF_NETLINK / NETLINK_GENERIC can resolve the "802.15.4 MAC" family and dump LLSEC_LIST_KEY on any wpan netdev that has an LLSEC key installed; the dump handler writes the raw 16-byte AES-128 key bytes (IEEE802154_ATTR_LLSEC_KEY_BYTES, copied verbatim from struct ieee802154_llsec_key.key) into the reply. Recovering the AES key compromises 802.15.4 LLSEC link confidentiality and authenticity, since LLSEC uses CCM* and the same key authenticates and encrypts frames. Impact: any local uid with no capabilities can read the raw 16-byte AES-128 LLSEC key from the kernel keytable on any wpan netdev that has an administrator-installed LLSEC key, by issuing an LLSEC_LIST_KEY dump on the legacy IEEE802154_NL generic-netlink family. Introduce IEEE802154_DUMP_PRIV() mirroring IEEE802154_DUMP() but setting .flags = GENL_ADMIN_PERM, and use it for the four LLSEC dump entries. LIST_PHY and LIST_IFACE retain IEEE802154_DUMP() because the modern nl802154 family exposes their equivalents to unprivileged readers by design (NL802154_CMD_GET_WPAN_PHY and NL802154_CMD_GET_INTERFACE carry "can be retrieved by unprivileged users" annotations).

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

Decrease -0.03 pp

From 0.17% on 06-10-2026

06-10-202605-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.180-1 | < 6.12.100-1 | < 7.1.5-1
Linux1 product
  • linux≥ 3e9c156e2c210ab67b12b1b692983a6b97c19d3f, < 3465035ba18b1ed50f8d201897d14135d20532b0 | ≥ 3e9c156e2c210ab67b12b1b692983a6b97c19d3f, < dffe745760f38fac0b8288e0dc4759b23d9888ff | ≥ 3e9c156e2c210ab67b12b1b692983a6b97c19d3f, < e84708ef7521f3bffc85a449954042018abbd60e | ≥ 3e9c156e2c210ab67b12b1b692983a6b97c19d3f, < 5abe94a205539d27945cda3ba43fdcfe295cf2c8 | ≥ 3e9c156e2c210ab67b12b1b692983a6b97c19d3f, < 09fd25cd8cd80a6b3edef04e53a7324d06ac2180 | ≥ 3e9c156e2c210ab67b12b1b692983a6b97c19d3f, < 1905ebabe638c946aced00c4bb664da26cac56d5 | ≥ 3e9c156e2c210ab67b12b1b692983a6b97c19d3f, < 6383248058956f2a52d720b1e9f8921099cdae04 | ≥ 3e9c156e2c210ab67b12b1b692983a6b97c19d3f, < 9c1e0b6d49471a712511d23fc9d06901561135e8 | 3.16

3 vendors · 171 products

References

28 links
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