CVE-2026-98218i2c: atr: fix dangling adapter pointer on add failure
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from a076a860acae77bbdcbd316541e5552e81fb1772 before 2f5e42edbd232bf705dc5d3a91e06344237e63bb; from a076a860acae77bbdcbd316541e5552e81fb1772 before 1093835f6aef58a831298d93e0d93f244fa07b84; from a076a860acae77bbdcbd316541e5552e81fb1772 before eabf7a3d33cd9fad106d267d00cc842434de8e02; from a076a860acae77bbdcbd316541e5552e81fb1772 before a57d9592714506556e30188af72dd3bdb9f647b5; from a076a860acae77bbdcbd316541e5552e81fb1772 before ad34235808b63a70ca4989b7a2852923193d06ef | CNA record |
References
- https://git.kernel.org/stable/c/2f5e42edbd232bf705dc5d3a91e06344237e63bb
- https://git.kernel.org/stable/c/1093835f6aef58a831298d93e0d93f244fa07b84
- https://git.kernel.org/stable/c/eabf7a3d33cd9fad106d267d00cc842434de8e02
- https://git.kernel.org/stable/c/a57d9592714506556e30188af72dd3bdb9f647b5
- https://git.kernel.org/stable/c/ad34235808b63a70ca4989b7a2852923193d06ef
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.