ID de Prueba:	1.3.6.1.4.1.25623.1.1.10.2022.0279
Categoría:	Mageia Linux Local Security Checks
Título:	Mageia: Security Advisory (MGASA-2022-0279)
Resumen:	The remote host is missing an update for the 'kernel-linus' package(s) announced via the MGASA-2022-0279 advisory.
Descripción:	Summary: The remote host is missing an update for the 'kernel-linus' package(s) announced via the MGASA-2022-0279 advisory. Vulnerability Insight: This kernel-linus update is based on upstream 5.15.58 and fixes at least the following security issues: Kernel lockdown bypass when UEFI secure boot is disabled / unavailable and IMA appraisal is enabled (CVE-2022-21505). Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to information disclosure (CVE-2022-23825). Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions (CVE-2022-29900, RetBleed). Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can hijack return instructions to achieve arbitrary speculative code execution under certain microarchitecture-dependent conditions (CVE-2022-29901). The Linux kernel before 5.18.13 lacks a certain clear operation for the block starting symbol (.bss). This allows Xen PV guest OS users to cause a denial of service or gain privileges (CVE-2022-36123). An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice (CVE-2022-36879). For other upstream fixes, see the referenced changelogs. Affected Software/OS: 'kernel-linus' package(s) on Mageia 8. Solution: Please install the updated package(s). CVSS Score: 2.1 CVSS Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2022-21505 Common Vulnerability Exposure (CVE) ID: CVE-2022-23825 Debian Security Information: DSA-5184 (Google Search) https://www.debian.org/security/2022/dsa-5184 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KLSRW4LLTAT3CZMOYVNTC7YIYGX3KLED/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D4RW5FCIYFNCQOEFJEUIRW3DGYW7CWBG/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MYI3OMJ7RIZNL3C6GUWNANNPEUUID6FM/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M27MB3QFNIJV4EQQSXWARHP3OGX6CR6K/ https://security.gentoo.org/glsa/202402-07 https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1037 http://www.openwall.com/lists/oss-security/2022/11/08/1 http://www.openwall.com/lists/oss-security/2022/11/10/2 Common Vulnerability Exposure (CVE) ID: CVE-2022-29900 Debian Security Information: DSA-5207 (Google Search) https://www.debian.org/security/2022/dsa-5207 https://www.secpod.com/blog/retbleed-intel-and-amd-processor-information-disclosure-vulnerability/ https://lists.debian.org/debian-lts-announce/2022/09/msg00011.html Common Vulnerability Exposure (CVE) ID: CVE-2022-29901 https://comsec.ethz.ch/retbleed https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html http://www.openwall.com/lists/oss-security/2022/07/12/4 http://www.openwall.com/lists/oss-security/2022/07/12/5 http://www.openwall.com/lists/oss-security/2022/07/12/2 http://www.openwall.com/lists/oss-security/2022/07/13/1 Common Vulnerability Exposure (CVE) ID: CVE-2022-36123 https://github.com/sickcodes/security/blob/master/advisories/SICK-2022-128.md https://github.com/torvalds/linux/commit/74a0032b8524ee2bd4443128c0bf9775928680b0 https://sick.codes/sick-2022-128 Common Vulnerability Exposure (CVE) ID: CVE-2022-36879 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=f85daf0e725358be78dfd208dea5fd665d8cb901 https://github.com/torvalds/linux/commit/f85daf0e725358be78dfd208dea5fd665d8cb901 https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
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