hwrng: core - fix rng list on registration error
In the Linux kernel, the following vulnerability has been resolved: hwrng: core - fix rng list on registration error hwrng_register(rng) does the following: 1. Checks if rng has name and read methods set 2. Checks if the name already exists 3. Adds rng to global rng_list 4. May try to set rng to current_rng If step 4 fails, it returns an error. However, it does not remove the rng from rng_list, causing a dangling reference which can result in use-after-free if the caller frees rng, since registration failed. Add a list_del_init() cleanup step.
CVE-2026-93163
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-2026-93163
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": "2bbb6983887fefc8026beab01198d30f47b7bd22",
"lessThan": "e37c67f768234e14cd6ea3b081568dd915c5b67e",
"versionType": "git"
},
{
"status": "affected",
"version": "2bbb6983887fefc8026beab01198d30f47b7bd22",
"lessThan": "de4f1bcb61a73cc896decdbd27d61a34add93b53",
"versionType": "git"
},
{
"status": "affected",
"version": "2bbb6983887fefc8026beab01198d30f47b7bd22",
"lessThan": "cf293c9c7424de0d04b51367d07f40570ce80231",
"versionType": "git"
},
{
"status": "affected",
"version": "2bbb6983887fefc8026beab01198d30f47b7bd22",
"lessThan": "bee8d1fcdc8f389b595b0a4cf6fe8440f499458a",
"versionType": "git"
},
{
"status": "affected",
"version": "2bbb6983887fefc8026beab01198d30f47b7bd22",
"lessThan": "3a5834db2b1ce25649f330e78efe1ccde78967fd",
"versionType": "git"
},
{
"status": "affected",
"version": "42802952a2725f85f7e36ee3b29593af5fe87197",
"versionType": "git"
},
{
"status": "affected",
"version": "4.9.320",
"lessThan": "4.10",
"versionType": "semver"
}
],
"programFiles": [
"drivers/char/hw_random/core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"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/char/hw_random/core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93163
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48721 · Revision 1
- Added to Heist Feed
- Publisher date