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Red Hat: CVE-2018-19854: Information Disclosure in crypto_report_one in crypto/crypto_user.c (Multiple Advisories)

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Red Hat: CVE-2018-19854: Information Disclosure in crypto_report_one in crypto/crypto_user.c (Multiple Advisories)

Severity
2
CVSS
(AV:L/AC:M/Au:N/C:P/I:N/A:N)
Published
12/04/2018
Created
11/07/2019
Added
11/06/2019
Modified
03/13/2024

Description

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).

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • CVE-2018-19854
  • RHSA-2019:3309
  • RHSA-2019:3517

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