High [CVE-2026-52492] Arbitrary code execution via crafted TIFF image
This high-severity Red Hat Linux advisory covers CVE-2026-52492 affecting Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6.
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Summary
An integer overflow in the libtiff rgb2ycbcr utility's cvtRaster() function when computing strip buffer sizes can result in an undersized heap allocation and subsequent heap-based buffer overflow during YCbCr conversion of a crafted TIFF image A flaw was found in libtiff. This could potentially allow for arbitrary code execution.
Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-787.
Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6.
Red Hat fixing advisory: RHSA-2026:53467.
Affected products named by the advisory: Red Hat package: libtiff.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
- libtiff-main-4.7.2-2.hum1
- RHSA-2026:53467
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
Mitigation checklist
- 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.
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
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