# CVE-2024-6387: RedHat Openssh: CVE-2024-6387 Remote Code Execution Due To A Race Condition In Signal Handling CVE-2024-6387 is fixed in 21 products on 2 platforms, first by ALAS2023-2024-649, released June 26, 2024. It is not reported as exploited. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/cve/CVE-2024-6387 - Priority: Urgent - CVSS: 8.1 (Critical) - EPSS: 0.9951 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jun 26, 2024 - Weakness: Signal Handler Race Condition - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-6387 ## Description This is a vulnerability in open source code and Apple Software is among the affected projects. The ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | macOS | Monterey | 12.7.6 | [Monterey 12.7.6](https://patchblox.com/security/data/fix/macos/monterey-12.7.6.md) | Jul 29, 2024 | | macOS | Sonoma | 14.6 | [Sonoma 14.6](https://patchblox.com/security/data/fix/macos/sonoma-14.6.md) | Jul 29, 2024 | | macOS | Ventura | 13.6.8 | [Ventura 13.6.8](https://patchblox.com/security/data/fix/macos/ventura-13.6.8.md) | Jul 29, 2024 | | Linux | openssh Debian 12.15 (bookworm) | 1:9.2p1-2+deb12u3 | [DSA-5724-1](https://patchblox.com/security/data/fix/linux/dsa-5724-1.md) | Jul 1, 2024 | | Linux | openssh Debian 13.5 (trixie) | 1:9.7p1-7 | [DEBIAN-CVE-2024-6387](https://patchblox.com/security/data/fix/linux/debian-cve-2024-6387.md) | Jul 1, 2024 | | Linux | openssh Debian 14 | 1:9.7p1-7 | [DEBIAN-CVE-2024-6387](https://patchblox.com/security/data/fix/linux/debian-cve-2024-6387.md) | Jul 1, 2024 | | Linux | openssh RHEL 9 | 0:8.7p1-38.el9_4.1 | [RHSA-2024:4312](https://patchblox.com/security/data/fix/linux/rhsa-2024-4312.md) | Jul 3, 2024 | | Linux | openssh almalinux 9 | 8.7p1-38.el9_4.1 | [ALSA-2024:4312](https://patchblox.com/security/data/fix/linux/alsa-2024-4312.md) | Jul 3, 2024 | | Linux | openssh amzn 2023 | 8.7p1-8.amzn2023.0.11 | [ALAS2023-2024-649](https://patchblox.com/security/data/fix/linux/alas2023-2024-649.md) | Jun 26, 2024 | | Linux | openssh ol 9 | 0:8.7p1-38.0.2.el9_4.1 | [ELSA-2024-4312](https://patchblox.com/security/data/fix/linux/elsa-2024-4312.md) | Jul 4, 2024 | | Linux | openssh opensuse-leap 15.6 | 9.6p1-150600.6.3.1 | [SUSE-SU-2024:2275-2](https://patchblox.com/security/data/fix/linux/suse-su-2024-2275-2.md) | Jul 3, 2024 | | Linux | openssh sles 15.6 | 9.6p1-150600.6.3.1 | [SUSE-SU-2024:2275-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-2275-1.md) | Jul 3, 2024 | | Linux | openssh-askpass RHEL 9 | 0:8.7p1-38.el9_4.1 | [RHSA-2024:4312](https://patchblox.com/security/data/fix/linux/rhsa-2024-4312.md) | Jul 3, 2024 | | Linux | openssh-askpass almalinux 9 | 8.7p1-38.el9_4.1 | [ALSA-2024:4312](https://patchblox.com/security/data/fix/linux/alsa-2024-4312.md) | Jul 3, 2024 | | Linux | openssh-askpass ol 9 | 0:8.7p1-38.0.2.el9_4.1 | [ELSA-2024-4312](https://patchblox.com/security/data/fix/linux/elsa-2024-4312.md) | Jul 4, 2024 | | Linux | openssh-askpass-gnome opensuse-leap 15.6 | 9.6p1-150600.6.3.1 | [SUSE-SU-2024:2275-2](https://patchblox.com/security/data/fix/linux/suse-su-2024-2275-2.md) | Jul 3, 2024 | | Linux | openssh-askpass-gnome sles 15.6 | 9.6p1-150600.6.3.1 | [SUSE-SU-2024:2275-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-2275-1.md) | Jul 3, 2024 | | Linux | openssh-client Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.10 | [openssh-client 1:8.9p1-3ubuntu0.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openssh-client-1-8.9p1-3ubuntu0.10.md) | Jun 30, 2024 | | Linux | openssh-client Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.3 | [openssh-client 1:9.6p1-3ubuntu13.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openssh-client-1-9.6p1-3ubuntu13.3.md) | Jun 30, 2024 | | Linux | openssh-clients RHEL 9 | 0:8.7p1-38.el9_4.1 | [RHSA-2024:4312](https://patchblox.com/security/data/fix/linux/rhsa-2024-4312.md) | Jul 3, 2024 | | Linux | openssh-clients almalinux 9 | 8.7p1-38.el9_4.1 | [ALSA-2024:4312](https://patchblox.com/security/data/fix/linux/alsa-2024-4312.md) | Jul 3, 2024 | | Linux | openssh-clients amzn 2023 | 8.7p1-8.amzn2023.0.11 | [ALAS2023-2024-649](https://patchblox.com/security/data/fix/linux/alas2023-2024-649.md) | Jun 26, 2024 | | Linux | openssh-clients ol 9 | 0:8.7p1-38.0.2.el9_4.1 | [ELSA-2024-4312](https://patchblox.com/security/data/fix/linux/elsa-2024-4312.md) | Jul 4, 2024 | | Linux | openssh-clients-debuginfo amzn 2023 | 8.7p1-8.amzn2023.0.11 | [ALAS2023-2024-649](https://patchblox.com/security/data/fix/linux/alas2023-2024-649.md) | Jun 26, 2024 | | Linux | openssh-debuginfo amzn 2023 | 8.7p1-8.amzn2023.0.11 | [ALAS2023-2024-649](https://patchblox.com/security/data/fix/linux/alas2023-2024-649.md) | Jun 26, 2024 | | Linux | openssh-debugsource amzn 2023 | 8.7p1-8.amzn2023.0.11 | [ALAS2023-2024-649](https://patchblox.com/security/data/fix/linux/alas2023-2024-649.md) | Jun 26, 2024 | | Linux | openssh-keycat RHEL 9 | 0:8.7p1-38.el9_4.1 | [RHSA-2024:4312](https://patchblox.com/security/data/fix/linux/rhsa-2024-4312.md) | Jul 3, 2024 | | Linux | openssh-keycat almalinux 9 | 8.7p1-38.el9_4.1 | [ALSA-2024:4312](https://patchblox.com/security/data/fix/linux/alsa-2024-4312.md) | Jul 3, 2024 | | Linux | openssh-keycat amzn 2023 | 8.7p1-8.amzn2023.0.11 | [ALAS2023-2024-649](https://patchblox.com/security/data/fix/linux/alas2023-2024-649.md) | Jun 26, 2024 | | Linux | openssh-keycat ol 9 | 0:8.7p1-38.0.2.el9_4.1 | [ELSA-2024-4312](https://patchblox.com/security/data/fix/linux/elsa-2024-4312.md) | Jul 4, 2024 | | Linux | openssh-keycat-debuginfo amzn 2023 | 8.7p1-8.amzn2023.0.11 | [ALAS2023-2024-649](https://patchblox.com/security/data/fix/linux/alas2023-2024-649.md) | Jun 26, 2024 | | Linux | openssh-server RHEL 9 | 0:8.7p1-38.el9_4.1 | [RHSA-2024:4312](https://patchblox.com/security/data/fix/linux/rhsa-2024-4312.md) | Jul 3, 2024 | | Linux | openssh-server Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.10 | [openssh-server 1:8.9p1-3ubuntu0.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openssh-server-1-8.9p1-3ubuntu0.10.md) | Jun 30, 2024 | | Linux | openssh-server Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.3 | [openssh-server 1:9.6p1-3ubuntu13.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openssh-server-1-9.6p1-3ubuntu13.3.md) | Jun 30, 2024 | | Linux | openssh-server almalinux 9 | 8.7p1-38.el9_4.1 | [ALSA-2024:4312](https://patchblox.com/security/data/fix/linux/alsa-2024-4312.md) | Jul 3, 2024 | | Linux | openssh-server amzn 2023 | 8.7p1-8.amzn2023.0.11 | [ALAS2023-2024-649](https://patchblox.com/security/data/fix/linux/alas2023-2024-649.md) | Jun 26, 2024 | | Linux | openssh-server ol 9 | 0:8.7p1-38.0.2.el9_4.1 | [ELSA-2024-4312](https://patchblox.com/security/data/fix/linux/elsa-2024-4312.md) | Jul 4, 2024 | | Linux | openssh-server-debuginfo amzn 2023 | 8.7p1-8.amzn2023.0.11 | [ALAS2023-2024-649](https://patchblox.com/security/data/fix/linux/alas2023-2024-649.md) | Jun 26, 2024 | | Linux | openssh-sftp-server Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.10 | [openssh-sftp-server 1:8.9p1-3ubuntu0.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openssh-sftp-server-1-8.9p1-3ubuntu0.10.md) | Jun 30, 2024 | | Linux | openssh-sftp-server Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.3 | [openssh-sftp-server 1:9.6p1-3ubuntu13.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openssh-sftp-server-1-9.6p1-3ubuntu13.3.md) | Jun 30, 2024 | | Linux | openssh-tests Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.10 | [openssh-tests 1:8.9p1-3ubuntu0.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openssh-tests-1-8.9p1-3ubuntu0.10.md) | Jun 30, 2024 | | Linux | openssh-tests Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.3 | [openssh-tests 1:9.6p1-3ubuntu13.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openssh-tests-1-9.6p1-3ubuntu13.3.md) | Jun 30, 2024 | | Linux | pam_ssh_agent_auth RHEL 9 | 0:0.10.4-5.38.el9_4.1 | [RHSA-2024:4312](https://patchblox.com/security/data/fix/linux/rhsa-2024-4312.md) | Jul 3, 2024 | | Linux | pam_ssh_agent_auth almalinux 9 | 0.10.4-5.38.el9_4.1 | [ALSA-2024:4312](https://patchblox.com/security/data/fix/linux/alsa-2024-4312.md) | Jul 3, 2024 | | Linux | pam_ssh_agent_auth amzn 2023 | 0.10.4-4.8.amzn2023.0.11 | [ALAS2023-2024-649](https://patchblox.com/security/data/fix/linux/alas2023-2024-649.md) | Jun 26, 2024 | | Linux | pam_ssh_agent_auth ol 9 | 0:0.10.4-5.38.0.2.el9_4.1 | [ELSA-2024-4312](https://patchblox.com/security/data/fix/linux/elsa-2024-4312.md) | Jul 4, 2024 | | Linux | pam_ssh_agent_auth-debuginfo amzn 2023 | 0.10.4-4.8.amzn2023.0.11 | [ALAS2023-2024-649](https://patchblox.com/security/data/fix/linux/alas2023-2024-649.md) | Jun 26, 2024 | | Linux | ssh Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.10 | [ssh 1:8.9p1-3ubuntu0.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ssh-1-8.9p1-3ubuntu0.10.md) | Jun 30, 2024 | | Linux | ssh Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.3 | [ssh 1:9.6p1-3ubuntu13.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-ssh-1-9.6p1-3ubuntu13.3.md) | Jun 30, 2024 | | Linux | ssh-askpass-gnome Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.10 | [ssh-askpass-gnome 1:8.9p1-3ubuntu0.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ssh-askpass-gnome-1-8.9p1-3ubuntu0.10.md) | Jun 30, 2024 | | Linux | ssh-askpass-gnome Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.3 | [ssh-askpass-gnome 1:9.6p1-3ubuntu13.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-ssh-askpass-gnome-1-9.6p1-3ubuntu13.3.md) | Jun 30, 2024 | --- Data as of 2026-11-08T19:12:23Z UTC. 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