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CVE-2017-17805 PUBLISHED

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.

EPSS 0.02% · 5.6th percentile

Risk Scores

EPSS Score
0.02%
5.6th percentile

Affected Products

VendorProductVersions
Ubuntu:16.04:LTSlinux-oem4.13.0-1012.13, 4.13.0-1010.11, 4.13.0-1008.9
Ubuntu:14.04:LTSlinux-lts-xenial4.4.0-108.131~14.04.1, 4.4.0-111.134~14.04.1, 4.4.0-112.135~14.04.1
Ubuntu:22.04:LTSlinux-intel-iot-realtime5.15.0-1073.75, 0
Ubuntu:16.04:LTSlinux-azure4.11.0-1009.9, 0, 4.11.0-1011.11
Ubuntu:22.04:LTSlinux-riscv5.15.0-1008.8, 5.15.0-1007.7, 5.15.0-1006.6
Ubuntu:16.04:LTSlinux4.4.0-15.31, 4.4.0-14.30, 4.4.0-13.29
Ubuntu:Pro:FIPS:16.04:LTSlinux-fips0, 4.4.0-1003.3, 4.4.0-1005.5
Ubuntu:14.04:LTSlinux-aws4.4.0-1010.10, 0, 4.4.0-1002.2
Ubuntu:20.04:LTSlinux-azure-fde0, 5.4.0-1063.66+cvm2.2, 5.4.0-1063.66+cvm3.2
Ubuntu:20.04:LTSlinux-gke0, 5.4.0-1033.35, 5.4.0-1035.37
Ubuntu:20.04:LTSlinux-raspi20, 5.3.0-1007.8, 5.3.0-1014.16
Ubuntu:22.04:LTSlinux-realtime0, 5.15.0-1032.35
Ubuntu:14.04:LTSlinux3.13.0-62.102, 3.11.0-12.19, 3.12.0-1.3
Ubuntu:16.04:LTSlinux-snapdragon4.4.0-1069.74, 4.4.0-1071.76, 4.4.0-1084.89
Ubuntu:16.04:LTSlinux-aws4.4.0-1030.39, 4.4.0-1017.26, 4.4.0-1018.27
Ubuntu:16.04:LTSlinux-hwe4.8.0-56.61~16.04.1, 4.10.0-28.32~16.04.2, 0
Ubuntu:20.04:LTSlinux-riscv5.4.0-36.41, 5.4.0-34.38, 5.4.0-33.37
Ubuntu:16.04:LTSlinux-kvm4.4.0-1009.14, 4.4.0-1019.24, 4.4.0-1017.22
Ubuntu:16.04:LTSlinux-gcp4.13.0-1011.15, 4.13.0-1008.11, 4.13.0-1007.10
Ubuntu:16.04:LTSlinux-raspi24.4.0-1016.22, 4.4.0-1017.23, 4.4.0-1019.25

…and 1 more

Timeline

References

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