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TI-2017-13043 Aliases CVE-2017-17805GHSA-h6gr-h9qh-f94v

The Salsa20 encryption algorithm in the Linux kernel before 4.14.8 does not correctly…

Priority LOW 34CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 20 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.00441 38th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 20 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 16

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*2.6.25 to before 3.2.97; 3.3 to before 3.16.52; 3.17 to before 3.18.89; 3.19 to before 4.1.49; 4.2 to before 4.4.107; 4.5 to before 4.9.71; 4.10 to before 4.14.8VulnerableLinux
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*42.2VulnerableopenSUSE
cpe:2.3:o:opensuse_project:leap:42.3:*:*:*:*:*:*:*42.3VulnerableOpensuse Project
cpe:2.3:o:suse:linux_enterprise_desktop:12:sp2:*:*:*:*:*:*12 sp2VulnerableSUSE
cpe:2.3:o:suse:linux_enterprise_desktop:12:sp3:*:*:*:*:*:*12 sp3VulnerableSUSE
cpe:2.3:o:suse:linux_enterprise_server:11:extra:*:*:*:*:*:*11 extraVulnerableSUSE
cpe:2.3:o:suse:linux_enterprise_server:11:sp4:*:*:*:*:*:*11 sp4VulnerableSUSE
cpe:2.3:o:suse:linux_enterprise_server:12:sp2:*:*:*:*:*:*12 sp2VulnerableSUSE
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.25 to before 3.2.97; 3.3 to before 3.16.52; 3.17 to before 3.18.89; 3.19 to before 4.1.49; 4.2 to before 4.4.107; 4.5 to before 4.9.71; 4.10 to before 4.14.8 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:* Versions 42.2 Vulnerable ·openSUSE
  • cpe:2.3:o:opensuse_project:leap:42.3:*:*:*:*:*:*:* Versions 42.3 Vulnerable ·Opensuse Project
  • cpe:2.3:o:suse:linux_enterprise_desktop:12:sp2:*:*:*:*:*:* Versions 12 sp2 Vulnerable ·SUSE
  • cpe:2.3:o:suse:linux_enterprise_desktop:12:sp3:*:*:*:*:*:* Versions 12 sp3 Vulnerable ·SUSE
  • cpe:2.3:o:suse:linux_enterprise_server:11:extra:*:*:*:*:*:* Versions 11 extra Vulnerable ·SUSE
  • cpe:2.3:o:suse:linux_enterprise_server:11:sp4:*:*:*:*:*:* Versions 11 sp4 Vulnerable ·SUSE
  • cpe:2.3:o:suse:linux_enterprise_server:12:sp2:*:*:*:*:*:* Versions 12 sp2 Vulnerable ·SUSE
Show 6 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:suse:linux_enterprise_server:12:sp3:*:*:*:*:*:*12 sp3VulnerableSUSE
cpe:2.3:o:suse:linux_enterprise_server_for_raspberry_pi:12:sp2:*:*:*:*:*:*12 sp2VulnerableSUSE
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*17.10VulnerableCanonical
  • cpe:2.3:o:suse:linux_enterprise_server:12:sp3:*:*:*:*:*:* Versions 12 sp3 Vulnerable ·SUSE
  • cpe:2.3:o:suse:linux_enterprise_server_for_raspberry_pi:12:sp2:*:*:*:*:*:* Versions 12 sp2 Vulnerable ·SUSE
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* Versions 17.10 Vulnerable ·Canonical

Remediation

Red Hat 4 advisories

  • RHSA-2019:2473 Released 2019-08-13 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-754.18.2.el6, kernel-abi-whitelists-2.6.32-754.18.2.el6, kernel-debug-2.6.32-754.18.2.el6 +5
    • Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf-2.6.32-754.18.2.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-754.18.2.el6, kernel-abi-whitelists-2.6.32-754.18.2.el6, kernel-debug-2.6.32-754.18.2.el6 +5
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf-2.6.32-754.18.2.el6
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-754.18.2.el6, kernel-abi-whitelists-2.6.32-754.18.2.el6, kernel-bootwrapper-2.6.32-754.18.2.el6 +8
    • Red Hat Enterprise Linux Server Optional (v. 6) python-perf-2.6.32-754.18.2.el6
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-754.18.2.el6, kernel-abi-whitelists-2.6.32-754.18.2.el6, kernel-debug-2.6.32-754.18.2.el6 +5
    • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf-2.6.32-754.18.2.el6
  • RHSA-2018:3096 Released 2018-10-30 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-957.rt56.910.el7, kernel-rt-debug-3.10.0-957.rt56.910.el7, kernel-rt-debug-devel-3.10.0-957.rt56.910.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-957.rt56.910.el7, kernel-rt-debug-3.10.0-957.rt56.910.el7, kernel-rt-debug-devel-3.10.0-957.rt56.910.el7 +7
  • RHSA-2018:2948 Released 2018-10-30 · Red Hat rating Important
    kernel-alt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-4.14.0-115.el7a, kernel-abi-whitelists-4.14.0-115.el7a, kernel-alt-4.14.0-115.el7a +9
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-4.14.0-115.el7a, kernel-tools-libs-devel-4.14.0-115.el7a
Show 1 more Red Hat advisories
  • RHSA-2018:3083 Released 2018-10-30 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-957.el7, kernel-3.10.0-957.el7, kernel-abi-whitelists-3.10.0-957.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) bpftool-3.10.0-957.el7, kernel-3.10.0-957.el7, kernel-abi-whitelists-3.10.0-957.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-957.el7, kernel-3.10.0-957.el7, kernel-abi-whitelists-3.10.0-957.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-957.el7, kernel-tools-libs-devel-3.10.0-957.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-957.el7, kernel-3.10.0-957.el7, kernel-abi-whitelists-3.10.0-957.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.el7
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-3.10.0-957.el7, kernel-abi-whitelists-3.10.0-957.el7, kernel-bootwrapper-3.10.0-957.el7 +10
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-3.10.0-957.el7, kernel-tools-libs-devel-3.10.0-957.el7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise MRG 2AffectedNo fix yet
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2019:2473
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:3083
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2018:2948, RHSA-2018:3083
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2018:2948, RHSA-2018:3083
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2018:3096
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2018:3096
Not affected: 7 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux Client (v. 7)
  • Red Hat Enterprise Linux ComputeNode (v. 7)
  • Red Hat Enterprise Linux Server (v. 7)
  • Red Hat Enterprise Linux Workstation (v. 7)
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-17805
  2. 2026-10-03 Alias added: GHSA-h6gr-h9qh-f94v

References

Patch 2

Advisory 20

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences