i2c: atr: fix dangling adapter pointer on add failure
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.
CVE-2026-98218
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98218
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "a076a860acae77bbdcbd316541e5552e81fb1772",
"lessThan": "2f5e42edbd232bf705dc5d3a91e06344237e63bb",
"versionType": "git"
},
{
"status": "affected",
"version": "a076a860acae77bbdcbd316541e5552e81fb1772",
"lessThan": "1093835f6aef58a831298d93e0d93f244fa07b84",
"versionType": "git"
},
{
"status": "affected",
"version": "a076a860acae77bbdcbd316541e5552e81fb1772",
"lessThan": "eabf7a3d33cd9fad106d267d00cc842434de8e02",
"versionType": "git"
},
{
"status": "affected",
"version": "a076a860acae77bbdcbd316541e5552e81fb1772",
"lessThan": "a57d9592714506556e30188af72dd3bdb9f647b5",
"versionType": "git"
},
{
"status": "affected",
"version": "a076a860acae77bbdcbd316541e5552e81fb1772",
"lessThan": "ad34235808b63a70ca4989b7a2852923193d06ef",
"versionType": "git"
}
],
"programFiles": [
"drivers/i2c/i2c-atr.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/i2c/i2c-atr.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98218
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38298 · Revision 1
- Added to Heist Feed
- Publisher date