Description (CNA)
A 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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat Hardened Images | unaffected 4.7.2-2.hum1 before * |
| Red Hat / Red Hat Ceph Storage 4 | unaffected |
| Red Hat / Red Hat Ceph Storage 6 | unaffected |
| Red Hat / Red Hat Ceph Storage 7 | unaffected |
| Red Hat / Red Hat Ceph Storage 8 | unaffected |
| Red Hat / Red Hat Ceph Storage 9 | unaffected |
| Red Hat / Red Hat Enterprise Linux 10 | unaffected |
| Red Hat / Red Hat Enterprise Linux 10 | unaffected |
| Red Hat / Red Hat Enterprise Linux 10 | affected |
| Red Hat / Red Hat Enterprise Linux 6 | unknown |
| Red Hat / Red Hat Enterprise Linux 7 | affected |
| Red Hat / Red Hat Enterprise Linux 7 | affected |
| Red Hat / Red Hat Enterprise Linux 8 | affected |
| Red Hat / Red Hat Enterprise Linux 8 | affected |
| Red Hat / Red Hat Enterprise Linux 8 | affected |
| Red Hat / Red Hat Enterprise Linux 9 | unaffected |
| Red Hat / Red Hat Enterprise Linux 9 | unaffected |
| Red Hat / Red Hat Enterprise Linux 9 | affected |
| Red Hat / Red Hat Hardened Images | unaffected |
CWE
CWE-122
References
- https://access.redhat.com/errata/RHSA-2026:53467
- https://access.redhat.com/security/cve/CVE-2026-18495
- https://bugzilla.redhat.com/show_bug.cgi?id=2531414
- https://gitlab.com/libtiff/libtiff/-/merge_requests/729
- https://gitlab.com/libtiff/libtiff/-/tree/67fd283d276f09db54dc39b9ef7b979d4b45c4b1
ADP enrichment
No English description supplied.
No references supplied.