The Salsa20 encryption algorithm in the Linux kernel before 4.14.8 does not correctly handle zero-length inputs, allowing a local attacker able to use the AF_ALG-based skcipher interface (CONFIG_CRYPTO_USER_API_SKCIPHER) to cause a denial of service (uninitialized-memory free and kernel crash) or have unspecified other impact by executing a crafted sequence of system calls that use the blkcipher_walk API. Both the generic implementation (crypto/salsa20_generic.c) and x86 implementation (arch/x86/crypto/salsa20_glue.c) of Salsa20 were vulnerable.
Metrics
Affected Vendors & Products
Advisories
Source | ID | Title |
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DLA-1232-1 | linux security update |
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DSA-4073-1 | linux security update |
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DSA-4082-1 | linux security update |
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EUVD-2017-8956 | The Salsa20 encryption algorithm in the Linux kernel before 4.14.8 does not correctly handle zero-length inputs, allowing a local attacker able to use the AF_ALG-based skcipher interface (CONFIG_CRYPTO_USER_API_SKCIPHER) to cause a denial of service (uninitialized-memory free and kernel crash) or have unspecified other impact by executing a crafted sequence of system calls that use the blkcipher_walk API. Both the generic implementation (crypto/salsa20_generic.c) and x86 implementation (arch/x86/crypto/salsa20_glue.c) of Salsa20 were vulnerable. |
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USN-3617-1 | Linux kernel vulnerabilities |
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USN-3617-2 | Linux (HWE) vulnerabilities |
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USN-3617-3 | Linux kernel (Raspberry Pi 2) vulnerabilities |
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USN-3619-1 | Linux kernel vulnerabilities |
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USN-3619-2 | Linux kernel (Xenial HWE) vulnerabilities |
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USN-3620-1 | Linux kernel vulnerabilities |
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USN-3620-2 | Linux kernel (Trusty HWE) vulnerabilities |
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USN-3632-1 | Linux kernel (Azure) vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
No history.

Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2024-08-05T20:59:17.879Z
Reserved: 2017-12-20T00:00:00
Link: CVE-2017-17805

No data.

Status : Deferred
Published: 2017-12-20T23:29:00.327
Modified: 2025-04-20T01:37:25.860
Link: CVE-2017-17805


No data.