UnratedFix available
kernel-uek: Fix of 2 CVEs
Type: advisorySources: OSV
- futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock {CVE-2026-53166} - rtmutex: Use waiter::task instead of current in remove_waiter() {CVE-2026-43499} - ip6_tunnel: clear skb2->cb[] in ip4ip6_err() {CVE-2026-43037}
- Products
- bpftool, kernel-uek, kernel-uek-container, kernel-uek-container-debug, kernel-uek-debug, kernel-uek-debug-devel, kernel-uek-devel, kernel-uek-headers, kernel-uek-tools, perf, python-perf
- Affected versions
- Not specified
- Fixed versions
- 5.4.17-2136.354.4.el7uek.tuxcare.els8
- CVEs
- CVE-2026-43037, CVE-2026-43499, CVE-2026-53166
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:49 UTC · Revision 1
Source evidence
- futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock {CVE-2026-53166} - rtmutex: Use waiter::task instead of current in remove_waiter() {CVE-2026-43499} - ip6_tunnel: clear skb2->cb[] in ip4ip6_err() {CVE-2026-43037}
osv:CLSA-2026-1783859504
bpftool
Fixed versions: 5.4.17-2136.354.4.el7uek.tuxcare.els8
kernel-uek
Fixed versions: 5.4.17-2136.354.4.el7uek.tuxcare.els8
kernel-uek-container
Fixed versions: 5.4.17-2136.354.4.el7uek.tuxcare.els8
kernel-uek-container-debug
Fixed versions: 5.4.17-2136.354.4.el7uek.tuxcare.els8
kernel-uek-debug
Fixed versions: 5.4.17-2136.354.4.el7uek.tuxcare.els8
kernel-uek-debug-devel
Fixed versions: 5.4.17-2136.354.4.el7uek.tuxcare.els8
kernel-uek-devel
Fixed versions: 5.4.17-2136.354.4.el7uek.tuxcare.els8
kernel-uek-headers
Fixed versions: 5.4.17-2136.354.4.el7uek.tuxcare.els8
kernel-uek-tools
Fixed versions: 5.4.17-2136.354.4.el7uek.tuxcare.els8
perf
Fixed versions: 5.4.17-2136.354.4.el7uek.tuxcare.els8
python-perf
Fixed versions: 5.4.17-2136.354.4.el7uek.tuxcare.els8
Complete source record
{
"id": "4fb41b06111417317e88b34d10b7820a23943f01c043231ffcdfc218f53d2881",
"url": "https://osv.dev/vulnerability/CLSA-2026-1783859504",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "kernel-uek: Fix of 2 CVEs",
"summary": "- futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock {CVE-2026-53166} - rtmutex: Use waiter::task instead of current in remove_waiter() {CVE-2026-43499} - ip6_tunnel: clear skb2->cb[] in ip4ip6_err() {CVE-2026-43037}",
"evidence": "osv:CLSA-2026-1783859504",
"products": [
{
"name": {
"value": "bpftool",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.4.17-2136.354.4.el7uek.tuxcare.els8",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "kernel-uek",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
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{
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"evidence": "/affected/1/ranges"
}
],
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},
{
"name": {
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"evidence": "/affected/2/ranges"
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{
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{
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{
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{
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"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "kernel-uek-headers",
"evidence": "/affected/7/package/name"
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"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "perf",
"evidence": "/affected/9/package/name"
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"prerequisites": [],
"fixed_versions": [
{
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],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/10/package/name"
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"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/10/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1783859504",
"aliases": [
"CLSA-2026-1783859504"
],
"affected": [
{
"ranges": [
{
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],
"package": {
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"ecosystem": "TuxCare:OracleLinux:7"
},
"database_specific": {
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{
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],
"package": {
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"purl": "pkg:rpm/tuxcare/kernel-uek?distro=oraclelinux-7",
"ecosystem": "TuxCare:OracleLinux:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux7els/CLSA-2026-1783859504.json"
}
},
{
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{
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{
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}
]
}
],
"package": {
"name": "kernel-uek-container",
"purl": "pkg:rpm/tuxcare/kernel-uek-container?distro=oraclelinux-7",
"ecosystem": "TuxCare:OracleLinux:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux7els/CLSA-2026-1783859504.json"
}
},
{
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],
"package": {
"name": "kernel-uek-container-debug",
"purl": "pkg:rpm/tuxcare/kernel-uek-container-debug?distro=oraclelinux-7",
"ecosystem": "TuxCare:OracleLinux:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux7els/CLSA-2026-1783859504.json"
}
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{
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}
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],
"package": {
"name": "kernel-uek-debug",
"purl": "pkg:rpm/tuxcare/kernel-uek-debug?distro=oraclelinux-7",
"ecosystem": "TuxCare:OracleLinux:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux7els/CLSA-2026-1783859504.json"
}
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{
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"package": {
"name": "kernel-uek-debug-devel",
"purl": "pkg:rpm/tuxcare/kernel-uek-debug-devel?distro=oraclelinux-7",
"ecosystem": "TuxCare:OracleLinux:7"
},
"database_specific": {
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"package": {
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"purl": "pkg:rpm/tuxcare/kernel-uek-devel?distro=oraclelinux-7",
"ecosystem": "TuxCare:OracleLinux:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux7els/CLSA-2026-1783859504.json"
}
},
{
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],
"package": {
"name": "kernel-uek-headers",
"purl": "pkg:rpm/tuxcare/kernel-uek-headers?distro=oraclelinux-7",
"ecosystem": "TuxCare:OracleLinux:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux7els/CLSA-2026-1783859504.json"
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],
"package": {
"name": "perf",
"purl": "pkg:rpm/tuxcare/perf?distro=oraclelinux-7",
"ecosystem": "TuxCare:OracleLinux:7"
},
"database_specific": {
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},
{
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],
"package": {
"name": "python-perf",
"purl": "pkg:rpm/tuxcare/python-perf?distro=oraclelinux-7",
"ecosystem": "TuxCare:OracleLinux:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux7els/CLSA-2026-1783859504.json"
}
}
],
"modified": "2026-10-26T09:43:24.926185899Z",
"provider": "osv",
"upstream": [
"CVE-2026-43037",
"CVE-2026-43499",
"CVE-2026-53166"
],
"references": [
"https://errata.tuxcare.com/els_os/oraclelinux7els/CLSA-2026-1783859504.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-43037",
"https://nvd.nist.gov/vuln/detail/CVE-2026-43499"
]
},
"related_cves": [
{
"value": "CVE-2026-43037",
"evidence": "/upstream"
},
{
"value": "CVE-2026-43499",
"evidence": "/upstream"
},
{
"value": "CVE-2026-53166",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449898,
"published_at": "2026-07-12T12:32:01+00:00"
}