dax: read holder_ops once in dax_holder_notify_failure()
In the Linux kernel, the following vulnerability has been resolved: dax: read holder_ops once in dax_holder_notify_failure() dax_holder_notify_failure() reads dax_dev->holder_ops twice without READ_ONCE() -- once for the NULL check and once for the indirect notify_failure() call. A concurrent fs_put_dax() can clear holder_ops between the two reads, so the check can observe a non-NULL pointer while the call dereferences NULL. (kill_dax() also clears holder_ops, but only after synchronize_srcu(), so it cannot race a reader that is inside dax_read_lock(); fs_put_dax() does no such synchronization.) Fetch holder_ops once into a local with READ_ONCE() so the NULL check and the indirect call observe the same value.
CVE-2026-93073
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-2026-93073
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": "8012b866085523758780850087102421dbcce522",
"lessThan": "1661b9bf78def01a8c96409569772d9b2592f4ba",
"versionType": "git"
},
{
"status": "affected",
"version": "8012b866085523758780850087102421dbcce522",
"lessThan": "0a42180d5410c98829ee72d1d426fb7faf9e6873",
"versionType": "git"
},
{
"status": "affected",
"version": "8012b866085523758780850087102421dbcce522",
"lessThan": "ee1251621d1c7cf3155c6704542cbb358d799968",
"versionType": "git"
},
{
"status": "affected",
"version": "8012b866085523758780850087102421dbcce522",
"lessThan": "6a37acecc7c29136235cbc446a1b89e81414344b",
"versionType": "git"
},
{
"status": "affected",
"version": "8012b866085523758780850087102421dbcce522",
"lessThan": "eb412f80311fc7ab6eb3203091a3fe59a5e9fd30",
"versionType": "git"
},
{
"status": "affected",
"version": "8012b866085523758780850087102421dbcce522",
"lessThan": "7ae9d15bdcde0f2955ae13b6a95587f9e23b2359",
"versionType": "git"
}
],
"programFiles": [
"drivers/dax/super.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/dax/super.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93073
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37808 · Revision 1
- Added to Heist Feed
- Publisher date