RHSA-2026:53467
Vulnerability from csaf_redhat - Published: 2026-08-11 12:55 - Updated: 2026-09-11 19:12A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the `tiff2pdf` utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit `StripByteCounts` value to be truncated to a 32-bit integer. This leads to an undersized memory allocation and a subsequent out-of-bounds memory copy, resulting in a crash and severe memory corruption.
A flaw was found in libtiff. An attacker can exploit a vulnerability in the `process_command_opts()` function within `tools/tiffcrop.c` to execute arbitrary code. This could lead to a complete compromise of the affected system.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:libtiff-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libtiff-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libtiff-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
A flaw was found in libtiff. An attacker could exploit this vulnerability by processing a specially crafted file, leading to arbitrary code execution. This issue occurs within the `thumbnail.c: main()` component. Successful exploitation could allow the attacker to take control of the affected system.
A flaw was found in libtiff. An integer overflow vulnerability exists in the `cvtRaster()` function of the `rgb2ycbcr` utility. When processing a specially crafted TIFF image during YCbCr conversion, an attacker could trigger an undersized heap allocation, leading to a heap-based buffer overflow. This could potentially allow for arbitrary code execution.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:libtiff-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libtiff-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libtiff-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
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}
],
"product_status": {
"fixed": [
"Red Hat Hardened Images:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-52492"
},
{
"category": "external",
"summary": "RHBZ#2523134",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2523134"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-52492",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-52492"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-52492",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52492"
},
{
"category": "external",
"summary": "https://gist.github.com/okyfh/fbc5a37cade358361d80f6a498560cfa",
"url": "https://gist.github.com/okyfh/fbc5a37cade358361d80f6a498560cfa"
},
{
"category": "external",
"summary": "https://gitlab.com/libtiff/libtiff/-/commit/94affc5cf54111312f9891eb77accb93eebc28d7",
"url": "https://gitlab.com/libtiff/libtiff/-/commit/94affc5cf54111312f9891eb77accb93eebc28d7"
}
],
"release_date": "2026-08-24T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-08-11T12:55:57+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:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:53467"
},
{
"category": "workaround",
"details": "To mitigate this issue, avoid processing untrusted or maliciously crafted TIFF images with the rgb2ycbcr utility. Users should exercise caution when handling TIFF files from unknown or suspicious sources.",
"product_ids": [
"Red Hat Hardened Images:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "libtiff: libtiff: Arbitrary code execution via crafted TIFF image"
}
]
}
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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.