CVE-2026-4775: Integer Overflow or Wraparound in Red Hat Red Hat Enterprise Linux 10
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.
AI Analysis
Technical Summary
A signed integer overflow vulnerability exists in the putcontig8bitYCbCr44tile function of the libtiff library, which is part of Red Hat Enterprise Linux 9 and 10. When processing maliciously crafted TIFF files, this flaw leads to incorrect memory pointer calculations causing out-of-bounds heap writes. The vulnerability can be exploited remotely to cause denial of service or arbitrary code execution. Red Hat has issued security advisories RHSA-2026:12265 and RHSA-2026:12271 providing updated libtiff packages that fix this issue. The CVSS v3.1 base score is 7.8, indicating high severity. The vulnerability is tracked as CWE-190 (Integer Overflow or Wraparound).
Potential Impact
Successful exploitation can lead to denial of service through application crashes or arbitrary code execution, impacting confidentiality, integrity, and availability. The vulnerability requires user interaction and local access vector but no privileges. The CVSS score of 7.8 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Red Hat has released official security updates for libtiff that address CVE-2026-4775. Users should apply the updated libtiff packages as described in Red Hat advisories RHSA-2026:12265 and RHSA-2026:12271. Detailed update instructions are available at https://access.redhat.com/articles/11258. Applying these updates fully mitigates the vulnerability. No additional mitigations are required beyond applying the official patches.
CVE-2026-4775: Integer Overflow or Wraparound in Red Hat Red Hat Enterprise Linux 10
Description
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.
CVSS v3.1
Score 7.8high
Affected software
pkg:rpm/redhat/libtiffRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
A signed integer overflow vulnerability exists in the putcontig8bitYCbCr44tile function of the libtiff library, which is part of Red Hat Enterprise Linux 9 and 10. When processing maliciously crafted TIFF files, this flaw leads to incorrect memory pointer calculations causing out-of-bounds heap writes. The vulnerability can be exploited remotely to cause denial of service or arbitrary code execution. Red Hat has issued security advisories RHSA-2026:12265 and RHSA-2026:12271 providing updated libtiff packages that fix this issue. The CVSS v3.1 base score is 7.8, indicating high severity. The vulnerability is tracked as CWE-190 (Integer Overflow or Wraparound).
Potential Impact
Successful exploitation can lead to denial of service through application crashes or arbitrary code execution, impacting confidentiality, integrity, and availability. The vulnerability requires user interaction and local access vector but no privileges. The CVSS score of 7.8 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Red Hat has released official security updates for libtiff that address CVE-2026-4775. Users should apply the updated libtiff packages as described in Red Hat advisories RHSA-2026:12265 and RHSA-2026:12271. Detailed update instructions are available at https://access.redhat.com/articles/11258. Applying these updates fully mitigates the vulnerability. No additional mitigations are required beyond applying the official patches.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-03-24T14:26:05.988Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/errata/RHSA-2026:12265","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:12271","vendor":"Red Hat"},{"url":"https://access.redhat.com/security/cve/CVE-2026-4775","vendor":"Red Hat"}]
Threat ID: 69c2b1b4f4197a8e3b48d204
Added to database: 03/24/2026, 15:45:56 UTC
Last enriched: 07/15/2026, 09:29:25 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 124
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