Red Hat Security Advisory: freerdp security update
Multiple security vulnerabilities have been identified in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP) client used in Red Hat Enterprise Linux 9.0. These include denial of service issues caused by use-after-free, double free, endless blocking loops, and crafted audio data, as well as memory corruption vulnerabilities such as heap-buffer overflow and out-of-bounds reads. Additionally, there are vulnerabilities leading to division-by-zero errors and information disclosure via heap memory out-of-bounds reads. Red Hat has issued a security advisory addressing these issues with updates available for affected packages.
AI Analysis
Technical Summary
FreeRDP, used in Red Hat Enterprise Linux 9.0, contains multiple vulnerabilities: CVE-2026-25952 (use-after-free causing denial of service), CVE-2026-26986 (double free during disconnect causing denial of service), CVE-2026-27951 (endless blocking loop causing denial of service), CVE-2026-29775 (heap-buffer overflow via out-of-bounds cacheId), CVE-2026-31885 (out-of-bounds read in ADPCM decoders due to missing bounds checks), CVE-2026-31884 (division-by-zero in ADPCM decoders when nBlockAlign is zero), CVE-2026-31883 (denial of service via crafted audio data), and CVE-2026-33985 (information disclosure via heap memory out-of-bounds read). These vulnerabilities affect the freerdp package version 2.4.1-3.el9_0.7 and related components on Red Hat Enterprise Linux 9.0 for multiple architectures. The advisory provides updated packages to address these issues.
Potential Impact
The vulnerabilities collectively can cause denial of service conditions through memory corruption and logic errors, including use-after-free, double free, endless loops, and crafted input handling. Additionally, there is a heap-buffer overflow and out-of-bounds reads that may lead to memory corruption or information disclosure. A division-by-zero error could cause application crashes. These issues affect the stability and confidentiality of the FreeRDP client when connecting to RDP servers.
Mitigation Recommendations
Red Hat has released updated freerdp packages (version 2.4.1-3.el9_0.7) for Red Hat Enterprise Linux 9.0 that address these vulnerabilities. Users should apply these updates promptly by following the instructions in the Red Hat advisory RHSA-2026:16485 and the referenced article https://access.redhat.com/articles/11258. No additional mitigations are indicated beyond applying the official patches.
Red Hat Security Advisory: freerdp security update
Description
Multiple security vulnerabilities have been identified in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP) client used in Red Hat Enterprise Linux 9.0. These include denial of service issues caused by use-after-free, double free, endless blocking loops, and crafted audio data, as well as memory corruption vulnerabilities such as heap-buffer overflow and out-of-bounds reads. Additionally, there are vulnerabilities leading to division-by-zero errors and information disclosure via heap memory out-of-bounds reads. Red Hat has issued a security advisory addressing these issues with updates available for affected packages.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
FreeRDP, used in Red Hat Enterprise Linux 9.0, contains multiple vulnerabilities: CVE-2026-25952 (use-after-free causing denial of service), CVE-2026-26986 (double free during disconnect causing denial of service), CVE-2026-27951 (endless blocking loop causing denial of service), CVE-2026-29775 (heap-buffer overflow via out-of-bounds cacheId), CVE-2026-31885 (out-of-bounds read in ADPCM decoders due to missing bounds checks), CVE-2026-31884 (division-by-zero in ADPCM decoders when nBlockAlign is zero), CVE-2026-31883 (denial of service via crafted audio data), and CVE-2026-33985 (information disclosure via heap memory out-of-bounds read). These vulnerabilities affect the freerdp package version 2.4.1-3.el9_0.7 and related components on Red Hat Enterprise Linux 9.0 for multiple architectures. The advisory provides updated packages to address these issues.
Potential Impact
The vulnerabilities collectively can cause denial of service conditions through memory corruption and logic errors, including use-after-free, double free, endless loops, and crafted input handling. Additionally, there is a heap-buffer overflow and out-of-bounds reads that may lead to memory corruption or information disclosure. A division-by-zero error could cause application crashes. These issues affect the stability and confidentiality of the FreeRDP client when connecting to RDP servers.
Mitigation Recommendations
Red Hat has released updated freerdp packages (version 2.4.1-3.el9_0.7) for Red Hat Enterprise Linux 9.0 that address these vulnerabilities. Users should apply these updates promptly by following the instructions in the Red Hat advisory RHSA-2026:16485 and the referenced article https://access.redhat.com/articles/11258. No additional mitigations are indicated beyond applying the official patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:16485
- Cve Count
- 8
- Additional Cves
- ["CVE-2026-26986","CVE-2026-27951","CVE-2026-29775","CVE-2026-31883","CVE-2026-31884","CVE-2026-31885","CVE-2026-33985"]
Threat ID: 6a16097ee29bf47b5064a67a
Added to database: 05/26/2026, 20:58:38 UTC
Last enriched: 08/18/2026, 14:07:43 UTC
Last updated: 09/14/2026, 22:01:33 UTC
Views: 77
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