Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-9150: A flaw was found in libsolv. This stack-based buffer overflow vulnerability occurs in libsolv's Debian metadata parser when processing specially crafted Debian repository metadata. An attacker could exploit this by providing malicious SHA384 or SHA512 checksum tags, leading to memory corruption and a denial of service (DoS) in the affected system. CVE-2026-9149: A flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim processes a specially crafted .solv file containing negative size values in the repo_add_solv function. This leads to an undersized memory allocation and a subsequent out-of-bounds write. An attacker could exploit this to cause a denial of service (DoS). CVE-2026-48864: 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. CVE-2026-48863: A flaw was found in libsolv. A stack-based buffer overflow vulnerability exists in the PGP verification component due to incorrect length handling when copying EdDSA 's' MPI into a stack buffer. A remote attacker could craft a malicious Ed25519 PGP signature with mismatched MPI lengths. Processing this crafted signature could lead to a denial of service in automated package or repository processing workflows.
Fixed packages 14
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | libsolv | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | libsolv-debuginfo | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | libsolv-debugsource | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | libsolv-demo | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | libsolv-demo-debuginfo | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | libsolv-devel | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | libsolv-tools | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | libsolv-tools-debuginfo | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | perl-solv | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | perl-solv-debuginfo | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | python3-solv | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | python3-solv-debuginfo | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | ruby-solv | 0:0.7.22-1.amzn2023.0.4 |
| Amazon Linux · 2023 | ruby-solv-debuginfo | 0:0.7.22-1.amzn2023.0.4 |
Vulnerabilities 4
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High 7.8
Libsolv: heap buffer overflow in libsolv repopagestore via unchecked decompression of malicious .solv page data
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 proc…
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High 7.5
Libsolv: stack-based buffer overflow in libsolv eddsa pgp signature verification allows denial of service
A flaw was found in libsolv. A stack-based buffer overflow vulnerability exists in the PGP verification component due to incorrect length handling when copying EdDSA 's' MPI into a stack buffer. A remote attacker could craft a malicious Ed25519 PGP signature …
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Medium 6.5
Libsolv: heap buffer overflow in libsolv repo_add_solv via negative maxsize from crafted .solv file
A flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim processes a specially crafted `.solv` file containing negative size values in the `repo_add_solv` function. This leads to an undersized memory allocation and a subsequen…
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Medium 6.5
Libsolv: stack-based buffer overflow in libsolv's debian metadata parser when handling sha384/sha512 checksums
A flaw was found in libsolv. This stack-based buffer overflow vulnerability occurs in libsolv's Debian metadata parser when processing specially crafted Debian repository metadata. An attacker could exploit this by providing malicious SHA384 or SHA512 checksu…