wifi: mt76: mt7921: fix a potential clc buffer length underflow
CVE-2026-46136 is fixed in 16 products on 1 platform, first by DEBIAN-CVE-2026-46136, released June 24, 2026. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: fix a potential clc buffer length underflow The buf_len is used to limit the iterations for retrieving the country power setting and may underflow under certain conditions due to changes in the power table in CLC. This underflow leads to an almost infinite loop or an invalid power setting resulting in driver initialization failure.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| dtb-aarch64 · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-64kb · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-64kb · sles 15.7 | 6.4.0-150700.53.73.2 | SUSE-SU-2026:3166-1 | Jul 21, 2026 |
| kernel-64kb · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-azure · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-azure · sles 15.7 | 6.4.0-150700.53.73.2 | SUSE-SU-2026:3166-1 | Jul 21, 2026 |
| kernel-azure · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-default · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-default · sles 15.7 | 6.4.0-150700.53.73.2 | SUSE-SU-2026:3166-1 | Jul 21, 2026 |
| kernel-default · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23237-1 | Aug 11, 2026 |
| kernel-default-base · opensuse-leap 16.0 | 6.12.0-160000.37.1.160000.2.19 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-default-base · sles 15.7 | 6.4.0-150700.53.73.2.150700.17.41.4 | SUSE-SU-2026:3166-1 | Jul 21, 2026 |
| kernel-default-base · sles 16.0 | 6.12.0-160000.37.1.160000.2.19 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-docs · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-docs · sles 15.7 | 6.4.0-150700.53.73.1 | SUSE-SU-2026:3166-1 | Jul 21, 2026 |
| kernel-docs · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-kvmsmall · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-kvmsmall · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-livepatch-SLE15-SP7-RT_Update_18 · sles 15.7 | 1-150700.1.5.1 | SUSE-SU-2026:3130-1 | Jul 20, 2026 |
| kernel-livepatch-SLE15-SP7_Update_19 · sles 15.7 | 1-150700.15.3.4 | SUSE-SU-2026:3166-1 | Jul 21, 2026 |
| kernel-obs-build · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-obs-build · sles 15.7 | 6.4.0-150700.53.73.2 | SUSE-SU-2026:3166-1 | Jul 21, 2026 |
| kernel-obs-qa · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-obs-qa · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-rt · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-source · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-source · sles 15.7 | 6.4.0-150700.53.73.1 | SUSE-SU-2026:3166-1 | Jul 21, 2026 |
| kernel-source · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-syms · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-syms · sles 15.7 | 6.4.0-150700.53.73.1 | SUSE-SU-2026:3166-1 | Jul 21, 2026 |
| kernel-syms · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| kernel-zfcpdump · opensuse-leap 16.0 | 6.12.0-160000.37.1 | OPENSUSE-SU-2026:21555-1 | Aug 12, 2026 |
| kernel-zfcpdump · sles 15.7 | 6.4.0-150700.53.73.2 | SUSE-SU-2026:3166-1 | Jul 21, 2026 |
| kernel-zfcpdump · sles 16.0 | 6.12.0-160000.37.1 | SUSE-SU-2026:23231-1 | Aug 11, 2026 |
| linux · Debian 12.15 (bookworm) | 6.1.176-1 | DEBIAN-CVE-2026-46136 | Jun 24, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.88-1 | DEBIAN-CVE-2026-46136 | Jun 24, 2026 |
| linux · Debian 14 | 7.0.7-1 | DEBIAN-CVE-2026-46136 | Jun 24, 2026 |
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