CVE-2026-4775

Summary

A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially causing a denial of service (application crash) or arbitrary code execution.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 100:4.6.0-6.el10_1.3 < *unaffected
Red HatRed Hat Enterprise Linux 100:4.6.0-8.el10_2.1 < *unaffected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support0:4.6.0-6.el10_0.3 < *unaffected
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support0:3.9.4-12.el7_9.2 < *unaffected
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support0:4.0.3-35.el7_9.2 < *unaffected
Red HatRed Hat Enterprise Linux 80:4.0.9-37.el8_10 < *unaffected
Red HatRed Hat Enterprise Linux 80:3.9.4-15.el8_10 < *unaffected
Red HatRed Hat Enterprise Linux 80:4.0.9-4.el8_10 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support0:4.0.9-18.el8_4.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support0:3.9.4-13.el8_4.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On0:4.0.9-18.el8_4.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On0:3.9.4-13.el8_4.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support0:4.0.9-21.el8_6.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support0:3.9.4-13.el8_6.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Service0:4.0.9-21.el8_6.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Service0:3.9.4-13.el8_6.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions0:4.0.9-21.el8_6.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions0:3.9.4-13.el8_6.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service0:4.0.9-29.el8_8.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service0:3.9.4-13.el8_8.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions0:4.0.9-29.el8_8.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions0:3.9.4-13.el8_8.2 < *unaffected
Red HatRed Hat Enterprise Linux 90:4.4.0-15.el9_7.3 < *unaffected
Red HatRed Hat Enterprise Linux 90:4.4.0-18.el9_8 < *unaffected
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions0:4.2.0-3.el9_0.3 < *unaffected
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions0:4.4.0-8.el9_2.5 < *unaffected
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support0:4.4.0-12.el9_4.5 < *unaffected
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support0:4.4.0-13.el9_6.4 < *unaffected
Red HatRed Hat AI Inference Server 3.21780681984 < *unaffected
Red HatRed Hat AI Inference Server 3.31782352950 < *unaffected
Red HatRed Hat AI Inference Server 3.31782352919 < *unaffected
Red HatRed Hat AI Inference Server 3.31782353093 < *unaffected
Red HatRed Hat AI Inference Server 3.31782352847 < *unaffected
Red HatRed Hat Hardened Images4.7.1-2.2.hum1 < *unaffected
Red HatRed Hat Hardened Images4.7.1-2.3.hum1 < *unaffected

Weaknesses

  • CWE-190: Integer Overflow or Wraparound

Workarounds

To mitigate this issue, avoid processing untrusted or maliciously crafted TIFF files with applications linked against the libtiff library. If processing untrusted TIFF files is unavoidable, consider running the affected applications within a sandboxed environment to limit the potential impact of successful exploitation. This operational control helps contain the effects of an out-of-bounds write, reducing the risk of denial of service or arbitrary code execution.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

CVE Program Container

Additional References

libtiff: libtiff: Arbitrary code execution or denial of service via signed integer overflow in TIFF file processing

Additional References

References