i2c: atr: fix dangling adapter pointer on add failure
CVE-2026-98218 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2026-98218, released October 6, 2026. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: i2c: atr: fix dangling adapter pointer on add failure i2c_atr_add_adapter() stores atr->adapter[chan_id] before i2c_add_adapter() so that the I2C bus notifier can match child clients during registration. On failure the channel is freed but the slot was left pointing at freed memory, which can lead to use-after-free in i2c_atr_del_adapter() / cleanup and also block reuse with -EEXIST. Clear the slot on the i2c_add_adapter() error path before freeing chan.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| kernel-64kb · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-azure · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-default · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-default-base · sles 15.7 | 6.4.0-150700.53.90.1.150700.17.51.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-docs · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-livepatch-SLE15-SP7_Update_24 · sles 15.7 | 1-150700.15.3.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-obs-build · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-source · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-syms · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-zfcpdump · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.113-1 | DEBIAN-CVE-2026-98218 | Oct 6, 2026 |
| linux · Debian 14 | 7.2.8-1 | DEBIAN-CVE-2026-98218 | Oct 6, 2026 |
| linux-6.12 · Debian 12.15 (bookworm) | 6.12.113-1~deb12u1 | DEBIAN-CVE-2026-98218 | Oct 6, 2026 |
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