RHSA-2026:10208
Vulnerability from csaf_redhat - Published: 2026-04-23 17:18 - Updated: 2026-07-15 14:31Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
chunkah:
* chunkah-0.4.0-1.hum1 (aarch64, x86_64)
* chunkah-0.4.0-1.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in Nix. Unbounded recursion in the NAR (Nix Archive) parser could lead to a stack-to-heap overflow when the parser is run on a coroutine stack. The stack is allocated without a guard page, which means that a stack overflow could overwrite memory on the heap and could allow arbitrary code execution as the Nix daemon (run as root in multi-user installations) if ASLR hardening is bypassed. This can be exploited by all users able to connect to the daemon (e.g., in Nix, this is configurable via the allowed-users setting, defaulting to all users).
7.8 (High)
Affected products
Fixed
3 products
Threats
Impact
Important
A flaw was found in Nix. Writing to arbitrary files can occur via "nix-prefetch-url --unpack" or "nix store prefetch-file --unpack" directory traversal.
7.1 (High)
Affected products
Fixed
3 products
Threats
Impact
Important
References
19 references
{
"document": {
"aggregate_severity": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"text": "Important"
},
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en",
"notes": [
{
"category": "summary",
"text": "An update for Red Hat Hardened Images RPMs is now available.",
"title": "Topic"
},
{
"category": "general",
"text": "This update includes the following RPMs:\n\nchunkah:\n * chunkah-0.4.0-1.hum1 (aarch64, x86_64)\n * chunkah-0.4.0-1.hum1.src (src)",
"title": "Details"
},
{
"category": "legal_disclaimer",
"text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
"title": "Terms of Use"
}
],
"publisher": {
"category": "vendor",
"contact_details": "https://access.redhat.com/security/team/contact/",
"issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
"name": "Red Hat Product Security",
"namespace": "https://www.redhat.com"
},
"references": [
{
"category": "self",
"summary": "https://access.redhat.com/errata/RHSA-2026:10208",
"url": "https://access.redhat.com/errata/RHSA-2026:10208"
},
{
"category": "external",
"summary": "https://images.redhat.com/",
"url": "https://images.redhat.com/"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/cve/CVE-2026-44029",
"url": "https://access.redhat.com/security/cve/CVE-2026-44029"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/updates/classification/",
"url": "https://access.redhat.com/security/updates/classification/"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/cve/CVE-2026-44028",
"url": "https://access.redhat.com/security/cve/CVE-2026-44028"
},
{
"category": "self",
"summary": "Canonical URL",
"url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_10208.json"
}
],
"title": "Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update",
"tracking": {
"current_release_date": "2026-07-15T14:31:34+00:00",
"generator": {
"date": "2026-07-15T14:31:34+00:00",
"engine": {
"name": "Red Hat SDEngine",
"version": "5.3.6"
}
},
"id": "RHSA-2026:10208",
"initial_release_date": "2026-04-23T17:18:39+00:00",
"revision_history": [
{
"date": "2026-04-23T17:18:39+00:00",
"number": "1",
"summary": "Initial version"
},
{
"date": "2026-05-07T03:12:05+00:00",
"number": "2",
"summary": "Last updated version"
},
{
"date": "2026-07-15T14:31:34+00:00",
"number": "3",
"summary": "Last generated version"
}
],
"status": "final",
"version": "3"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Red Hat Hardened Images",
"product": {
"name": "Red Hat Hardened Images",
"product_id": "Red Hat Hardened Images",
"product_identification_helper": {
"cpe": "cpe:/a:redhat:hummingbird:1"
}
}
}
],
"category": "product_family",
"name": "Red Hat Hardened Images"
},
{
"branches": [
{
"category": "product_version",
"name": "chunkah-main@aarch64",
"product": {
"name": "chunkah-main@aarch64",
"product_id": "chunkah-main@aarch64",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/chunkah@0.4.0-1.hum1?arch=aarch64\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-aarch64-rpms"
}
}
}
],
"category": "architecture",
"name": "aarch64"
},
{
"branches": [
{
"category": "product_version",
"name": "chunkah-main@src",
"product": {
"name": "chunkah-main@src",
"product_id": "chunkah-main@src",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/chunkah@0.4.0-1.hum1?arch=src\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-source-rpms"
}
}
}
],
"category": "architecture",
"name": "src"
},
{
"branches": [
{
"category": "product_version",
"name": "chunkah-main@x86_64",
"product": {
"name": "chunkah-main@x86_64",
"product_id": "chunkah-main@x86_64",
"product_identification_helper": {
"purl": "pkg:rpm/redhat/chunkah@0.4.0-1.hum1?arch=x86_64\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-x86_64-rpms"
}
}
}
],
"category": "architecture",
"name": "x86_64"
}
],
"category": "vendor",
"name": "Red Hat"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "chunkah-main@aarch64 as a component of Red Hat Hardened Images",
"product_id": "Red Hat Hardened Images:chunkah-main@aarch64"
},
"product_reference": "chunkah-main@aarch64",
"relates_to_product_reference": "Red Hat Hardened Images"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "chunkah-main@src as a component of Red Hat Hardened Images",
"product_id": "Red Hat Hardened Images:chunkah-main@src"
},
"product_reference": "chunkah-main@src",
"relates_to_product_reference": "Red Hat Hardened Images"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "chunkah-main@x86_64 as a component of Red Hat Hardened Images",
"product_id": "Red Hat Hardened Images:chunkah-main@x86_64"
},
"product_reference": "chunkah-main@x86_64",
"relates_to_product_reference": "Red Hat Hardened Images"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-44028",
"cwe": {
"id": "CWE-674",
"name": "Uncontrolled Recursion"
},
"discovery_date": "2026-05-05T02:01:06.136639+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2466635"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Nix. Unbounded recursion in the NAR (Nix Archive) parser could lead to a stack-to-heap overflow when the parser is run on a coroutine stack. The stack is allocated without a guard page, which means that a stack overflow could overwrite memory on the heap and could allow arbitrary code execution as the Nix daemon (run as root in multi-user installations) if ASLR hardening is bypassed. This can be exploited by all users able to connect to the daemon (e.g., in Nix, this is configurable via the allowed-users setting, defaulting to all users).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "nix: coroutine stack-to-heap overflow via unbounded recursion in NAR directory parser",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"Red Hat Hardened Images:chunkah-main@aarch64",
"Red Hat Hardened Images:chunkah-main@src",
"Red Hat Hardened Images:chunkah-main@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-44028"
},
{
"category": "external",
"summary": "RHBZ#2466635",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2466635"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-44028",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-44028"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-44028",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44028"
},
{
"category": "external",
"summary": "https://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407",
"url": "https://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407"
},
{
"category": "external",
"summary": "https://github.com/NixOS/nix/security/advisories/GHSA-vh5x-56v6-4368",
"url": "https://github.com/NixOS/nix/security/advisories/GHSA-vh5x-56v6-4368"
},
{
"category": "external",
"summary": "https://www.openwall.com/lists/oss-security/2026/05/04/32",
"url": "https://www.openwall.com/lists/oss-security/2026/05/04/32"
},
{
"category": "external",
"summary": "https://www.openwall.com/lists/oss-security/2026/05/04/33",
"url": "https://www.openwall.com/lists/oss-security/2026/05/04/33"
}
],
"release_date": "2026-05-05T00:30:16.205000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-04-23T17:18:39+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
"Red Hat Hardened Images:chunkah-main@aarch64",
"Red Hat Hardened Images:chunkah-main@src",
"Red Hat Hardened Images:chunkah-main@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:10208"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:chunkah-main@aarch64",
"Red Hat Hardened Images:chunkah-main@src",
"Red Hat Hardened Images:chunkah-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "nix: coroutine stack-to-heap overflow via unbounded recursion in NAR directory parser"
},
{
"cve": "CVE-2026-44029",
"cwe": {
"id": "CWE-36",
"name": "Absolute Path Traversal"
},
"discovery_date": "2026-05-05T02:01:01.710620+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2466634"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Nix. Writing to arbitrary files can occur via \"nix-prefetch-url --unpack\" or \"nix store prefetch-file --unpack\" directory traversal.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "nix: absolute path traversal when unpacking archives to disk",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"Red Hat Hardened Images:chunkah-main@aarch64",
"Red Hat Hardened Images:chunkah-main@src",
"Red Hat Hardened Images:chunkah-main@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-44029"
},
{
"category": "external",
"summary": "RHBZ#2466634",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2466634"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-44029",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-44029"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-44029",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44029"
},
{
"category": "external",
"summary": "https://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407",
"url": "https://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407"
},
{
"category": "external",
"summary": "https://github.com/NixOS/nix/security/advisories/GHSA-gr92-w2r5-qw5p",
"url": "https://github.com/NixOS/nix/security/advisories/GHSA-gr92-w2r5-qw5p"
},
{
"category": "external",
"summary": "https://www.openwall.com/lists/oss-security/2026/05/04/33",
"url": "https://www.openwall.com/lists/oss-security/2026/05/04/33"
}
],
"release_date": "2026-05-05T00:51:05.533000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-04-23T17:18:39+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
"Red Hat Hardened Images:chunkah-main@aarch64",
"Red Hat Hardened Images:chunkah-main@src",
"Red Hat Hardened Images:chunkah-main@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:10208"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:chunkah-main@aarch64",
"Red Hat Hardened Images:chunkah-main@src",
"Red Hat Hardened Images:chunkah-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "nix: absolute path traversal when unpacking archives to disk"
}
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…