net: sched: fix use-after-free in taprio_change()
In the Linux kernel, the following vulnerability has been resolved: net: sched: fix use-after-free in taprio_change() In 'taprio_change()', 'admin' pointer may become dangling due to sched switch / removal caused by 'advance_sched()', and critical section protected by 'q->current_entry_lock' is too small to prevent from such a scenario (which causes use-after-free detected by KASAN). Fix this by prefer 'rcu_replace_pointer()' over 'rcu_assign_pointer()' to update 'admin' immediately before an attempt to schedule freeing.
CVE-2024-50127
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-2024-50127
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": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
"lessThan": "2f868ce6013548a713c431c679ef73747a66fcf3",
"versionType": "git"
},
{
"status": "affected",
"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
"lessThan": "8a283a19026aaae8a773fd8061263cfa315b127f",
"versionType": "git"
},
{
"status": "affected",
"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
"lessThan": "999612996df28d81f163dad530d7f8026e03aec6",
"versionType": "git"
},
{
"status": "affected",
"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
"lessThan": "fe371f084073e8672a2d7d46b335c3c060d1e301",
"versionType": "git"
},
{
"status": "affected",
"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
"lessThan": "0d4c0d2844e4eac3aed647f948fd7e60eea56a61",
"versionType": "git"
},
{
"status": "affected",
"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
"lessThan": "2240f9376f20f8b6463232b4ca7292569217237f",
"versionType": "git"
},
{
"status": "affected",
"version": "a3d43c0d56f1b94e74963a2fbadfb70126d92213",
"lessThan": "f504465970aebb2467da548f7c1efbbf36d0f44b",
"versionType": "git"
}
],
"programFiles": [
"net/sched/sch_taprio.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.4.285",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.229",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.170",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.115",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.59",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.11.6",
"versionType": "semver",
"lessThanOrEqual": "6.11.*"
},
{
"status": "unaffected",
"version": "6.12",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/sched/sch_taprio.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-50127
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26785 · Revision 1
- Added to Heist Feed
- Publisher date