UBUNTU-CVE-2018-19854

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UBUNTU-CVE-2018-19854

Summary:

Details: An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are copied to userspace, potentially leaking sensitive memory to user programs. NOTE: this is a CVE-2013-2547 regression but with easier exploitability because the attacker does not need a capability (however, the system must have the CONFIG_CRYPTO_USER kconfig option).

References: https://ubuntu.com/security/CVE-2018-19854, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39958beb206b53292801e216d9b8a660f087, https://ubuntu.com/security/notices/USN-3872-1, https://ubuntu.com/security/notices/USN-3878-1, https://ubuntu.com/security/notices/USN-3878-2, https://ubuntu.com/security/notices/USN-3901-1, https://ubuntu.com/security/notices/USN-3901-2, https://www.cve.org/CVERecord?id=CVE-2018-19854