CVE-2026-48864: Out-of-bounds Write in Red Hat Red Hat Enterprise Linux 10
A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within `.solv` files due to insufficient input validation. An attacker can provide a specially crafted `.solv` file, which, when processed by a vulnerable application, can lead to out-of-bounds memory access. This could result in information disclosure, alteration of program execution, or a denial of service.
AI Analysis
Technical Summary
A heap buffer overflow vulnerability exists in libsolv's repopagestore component when decompressing malicious .solv page data. This occurs due to unchecked decompression of attacker-controlled compressed data, resulting in out-of-bounds memory access. The flaw affects Red Hat Enterprise Linux 10 versions >=10.0.0 and <10.2. The vulnerability has a CVSS 3.1 base score of 7.8 (high severity) with impact on confidentiality, integrity, and availability. Red Hat has issued security advisories RHSA-2026:21333 and RHSA-2026:28236 providing updated libsolv packages (version 0.7.38-2.hum1 and 0.7.33-5.el10_2) that fix this and related libsolv vulnerabilities.
Potential Impact
Successful exploitation of this vulnerability can lead to out-of-bounds memory access resulting in information disclosure, unauthorized alteration of program execution, or denial of service conditions. The impact affects confidentiality, integrity, and availability of affected systems running vulnerable libsolv versions on Red Hat Enterprise Linux 10.
Mitigation Recommendations
Red Hat has released updated libsolv packages that address this vulnerability. Users should apply the security updates as described in Red Hat advisories RHSA-2026:21333 and RHSA-2026:28236 to remediate the issue. Patch status is confirmed by the vendor advisories. No additional mitigation steps are indicated beyond applying these official fixes.
CVE-2026-48864: Out-of-bounds Write in Red Hat Red Hat Enterprise Linux 10
Description
A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within `.solv` files due to insufficient input validation. An attacker can provide a specially crafted `.solv` file, which, when processed by a vulnerable application, can lead to out-of-bounds memory access. This could result in information disclosure, alteration of program execution, or a denial of service.
CVSS v3.1
Score 7.8high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
A heap buffer overflow vulnerability exists in libsolv's repopagestore component when decompressing malicious .solv page data. This occurs due to unchecked decompression of attacker-controlled compressed data, resulting in out-of-bounds memory access. The flaw affects Red Hat Enterprise Linux 10 versions >=10.0.0 and <10.2. The vulnerability has a CVSS 3.1 base score of 7.8 (high severity) with impact on confidentiality, integrity, and availability. Red Hat has issued security advisories RHSA-2026:21333 and RHSA-2026:28236 providing updated libsolv packages (version 0.7.38-2.hum1 and 0.7.33-5.el10_2) that fix this and related libsolv vulnerabilities.
Potential Impact
Successful exploitation of this vulnerability can lead to out-of-bounds memory access resulting in information disclosure, unauthorized alteration of program execution, or denial of service conditions. The impact affects confidentiality, integrity, and availability of affected systems running vulnerable libsolv versions on Red Hat Enterprise Linux 10.
Mitigation Recommendations
Red Hat has released updated libsolv packages that address this vulnerability. Users should apply the security updates as described in Red Hat advisories RHSA-2026:21333 and RHSA-2026:28236 to remediate the issue. Patch status is confirmed by the vendor advisories. No additional mitigation steps are indicated beyond applying these official fixes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-05-25T20:59:30.306Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-48864","vendor":"Red Hat"}]
Threat ID: 6a15d231891d628fdc604cda
Added to database: 05/26/2026, 17:02:41 UTC
Last enriched: 07/30/2026, 22:31:20 UTC
Last updated: 07/31/2026, 21:26:39 UTC
Views: 62
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