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CVE-2022-27672

Status Candidate

Overview

When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thread after an SMT mode switch potentially resulting in information disclosure.

Related Files

Red Hat Security Advisory 2023-7370-01
Posted Nov 22, 2023
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2023-7370-01 - An update for kernel is now available for Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2022-27672
SHA-256 | 0b7df23c07b8928dfa488e57a8e80f261ce5baeeddf8a4a20af108c0c57cc81f
Red Hat Security Advisory 2023-7379-01
Posted Nov 21, 2023
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2023-7379-01 - An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2022-27672
SHA-256 | 10af29b2ee571cfdc73109a090a81253b129ea2deaccb532ab757bfaaa1448ca
Ubuntu Security Notice USN-6396-3
Posted Oct 17, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6396-3 - It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. Daniel Moghimi discovered that some Intel Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information.

tags | advisory, x86, local
systems | linux, ubuntu
advisories | CVE-2022-27672, CVE-2022-40982, CVE-2023-3212, CVE-2023-3863, CVE-2023-40283, CVE-2023-4128
SHA-256 | 8232218ebf9db1d697b359db5fb1b03f5377448ae5c7c7556b00fe639696885f
Ubuntu Security Notice USN-6396-2
Posted Oct 5, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6396-2 - It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. Daniel Moghimi discovered that some Intel Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information.

tags | advisory, x86, local
systems | linux, ubuntu
advisories | CVE-2022-27672, CVE-2022-40982, CVE-2023-3212, CVE-2023-3863, CVE-2023-40283, CVE-2023-4128
SHA-256 | 70922139c6b034f316eb5edab38f72e40e1c058b73dbdd7a944c8bf477ad69b9
Ubuntu Security Notice USN-6396-1
Posted Sep 27, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6396-1 - It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. Daniel Moghimi discovered that some Intel Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information.

tags | advisory, x86, local
systems | linux, ubuntu
advisories | CVE-2022-27672, CVE-2022-40982, CVE-2023-3212, CVE-2023-3863, CVE-2023-40283, CVE-2023-4128
SHA-256 | 04f83418015d33b3205d491de8dc8ecd62f2ec112f80bc56af999e0c615748fa
Ubuntu Security Notice USN-6385-1
Posted Sep 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6385-1 - It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. William Zhao discovered that the Traffic Control subsystem in the Linux kernel did not properly handle network packet retransmission in certain situations. A local attacker could use this to cause a denial of service.

tags | advisory, denial of service, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-27672, CVE-2022-4269, CVE-2023-0458, CVE-2023-1075, CVE-2023-1076, CVE-2023-1206, CVE-2023-1380, CVE-2023-1611, CVE-2023-2002, CVE-2023-20593, CVE-2023-2162, CVE-2023-2163, CVE-2023-2235, CVE-2023-2269
SHA-256 | 397aabee4166381c7e45af794aab5e2f5ce22baf3c0ee09c03c9b743ea1a8b5f
Ubuntu Security Notice USN-6337-1
Posted Sep 5, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6337-1 - It was discovered that the netlink implementation in the Linux kernel did not properly validate policies when parsing attributes in some situations. An attacker could use this to cause a denial of service. Billy Jheng Bing Jhong discovered that the CIFS network file system implementation in the Linux kernel did not properly validate arguments to ioctl in some situations. A local attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-36691, CVE-2022-0168, CVE-2022-1184, CVE-2022-27672, CVE-2022-4269, CVE-2023-0590, CVE-2023-1611, CVE-2023-1855, CVE-2023-1990, CVE-2023-2124, CVE-2023-2194, CVE-2023-28466, CVE-2023-30772, CVE-2023-3111
SHA-256 | 3a3b28d849149c1024a137193a181c4ec6d17f9117e9d8b3d7d17ed6b0848914
Ubuntu Security Notice USN-6331-1
Posted Sep 2, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6331-1 - It was discovered that the netlink implementation in the Linux kernel did not properly validate policies when parsing attributes in some situations. An attacker could use this to cause a denial of service. Billy Jheng Bing Jhong discovered that the CIFS network file system implementation in the Linux kernel did not properly validate arguments to ioctl in some situations. A local attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-36691, CVE-2022-0168, CVE-2022-1184, CVE-2022-27672, CVE-2022-40982, CVE-2022-4269, CVE-2023-0590, CVE-2023-1611, CVE-2023-1855, CVE-2023-1990, CVE-2023-20593, CVE-2023-2124, CVE-2023-2194, CVE-2023-28466
SHA-256 | e7e858530b92101dc98943524cd5b05bb28b944a4fee7fea85ad9f330c37d63b
Ubuntu Security Notice USN-6314-1
Posted Aug 30, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6314-1 - It was discovered that the netlink implementation in the Linux kernel did not properly validate policies when parsing attributes in some situations. An attacker could use this to cause a denial of service. Billy Jheng Bing Jhong discovered that the CIFS network file system implementation in the Linux kernel did not properly validate arguments to ioctl in some situations. A local attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-36691, CVE-2022-0168, CVE-2022-1184, CVE-2022-27672, CVE-2022-4269, CVE-2023-0590, CVE-2023-1611, CVE-2023-1855, CVE-2023-1990, CVE-2023-2124, CVE-2023-2194, CVE-2023-28466, CVE-2023-30772, CVE-2023-3111
SHA-256 | c3c2f0678b85f5eaab86112f4b9c599f2b2244317cd1361e04c992ce485bc5c4
Ubuntu Security Notice USN-6312-1
Posted Aug 29, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6312-1 - It was discovered that the netlink implementation in the Linux kernel did not properly validate policies when parsing attributes in some situations. An attacker could use this to cause a denial of service. Billy Jheng Bing Jhong discovered that the CIFS network file system implementation in the Linux kernel did not properly validate arguments to ioctl in some situations. A local attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-36691, CVE-2022-0168, CVE-2022-1184, CVE-2022-27672, CVE-2022-4269, CVE-2023-0590, CVE-2023-1611, CVE-2023-1855, CVE-2023-1990, CVE-2023-2124, CVE-2023-2194, CVE-2023-28466, CVE-2023-30772, CVE-2023-3111
SHA-256 | 925705f14a84e7ecb29fa4649188f4da2792b062065b383661c4974e2d714a1f
Ubuntu Security Notice USN-6301-1
Posted Aug 18, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6301-1 - It was discovered that the netlink implementation in the Linux kernel did not properly validate policies when parsing attributes in some situations. An attacker could use this to cause a denial of service. Billy Jheng Bing Jhong discovered that the CIFS network file system implementation in the Linux kernel did not properly validate arguments to ioctl in some situations. A local attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-36691, CVE-2022-0168, CVE-2022-1184, CVE-2022-27672, CVE-2022-4269, CVE-2023-0590, CVE-2023-1611, CVE-2023-1855, CVE-2023-1990, CVE-2023-2124, CVE-2023-2194, CVE-2023-28466, CVE-2023-30772, CVE-2023-3111
SHA-256 | 125a315d2aef538a30c88eeedb76ea1ad66ca679d4531e2f90565d6b90d2edeb
Ubuntu Security Notice USN-6284-1
Posted Aug 14, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6284-1 - It was discovered that the netlink implementation in the Linux kernel did not properly validate policies when parsing attributes in some situations. An attacker could use this to cause a denial of service. Billy Jheng Bing Jhong discovered that the CIFS network file system implementation in the Linux kernel did not properly validate arguments to ioctl in some situations. A local attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-36691, CVE-2022-0168, CVE-2022-1184, CVE-2022-27672, CVE-2022-4269, CVE-2023-0590, CVE-2023-1611, CVE-2023-1855, CVE-2023-1990, CVE-2023-2124, CVE-2023-2194, CVE-2023-28466, CVE-2023-30772, CVE-2023-3111
SHA-256 | ec651fa855268fc14d26e263a73563801aeb8755bc99a7ff2e1209758b7c0a17
Ubuntu Security Notice USN-6134-1
Posted Jun 2, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6134-1 - It was discovered that the Traffic-Control Index implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the TCINDEX classifier has been removed. It was discovered that the Traffic-Control Index implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-27672, CVE-2022-3707, CVE-2022-4129, CVE-2022-47929, CVE-2022-4842, CVE-2023-0386, CVE-2023-0394, CVE-2023-0458, CVE-2023-0459, CVE-2023-1073, CVE-2023-1074, CVE-2023-1075, CVE-2023-1078, CVE-2023-1118
SHA-256 | f29d43641cf6602854ca5f12c8ec924f3cc0c924589ae311e0273f588159f703
Ubuntu Security Notice USN-6133-1
Posted Jun 2, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6133-1 - It was discovered that the Traffic-Control Index implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the TCINDEX classifier has been removed. It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information.

tags | advisory, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-27672, CVE-2022-3707, CVE-2023-0459, CVE-2023-1075, CVE-2023-1078, CVE-2023-1118, CVE-2023-1513, CVE-2023-1829, CVE-2023-1872, CVE-2023-20938, CVE-2023-2162, CVE-2023-32269
SHA-256 | 8dbd60b85d91d8541dce5a452bbd26cd2c78f4622dc2154acc6b4aac98331f41
Ubuntu Security Notice USN-6096-1
Posted May 23, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6096-1 - It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. Ziming Zhang discovered that the VMware Virtual GPU DRM driver in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service.

tags | advisory, denial of service, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-27672, CVE-2022-36280, CVE-2022-3707, CVE-2022-4129, CVE-2022-4842, CVE-2022-48423, CVE-2022-48424, CVE-2023-0210, CVE-2023-0394, CVE-2023-0458, CVE-2023-0459, CVE-2023-1073, CVE-2023-1074, CVE-2023-1075
SHA-256 | 34cc30ebdf58924fb1b0c1d2ffdb4157e4f644bf5821397bbd37680bea54a1e2
Ubuntu Security Notice USN-6091-1
Posted May 19, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6091-1 - It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. Ziming Zhang discovered that the VMware Virtual GPU DRM driver in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service.

tags | advisory, denial of service, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-27672, CVE-2022-36280, CVE-2022-3707, CVE-2022-4129, CVE-2022-4842, CVE-2022-48423, CVE-2022-48424, CVE-2023-0210, CVE-2023-0394, CVE-2023-0458, CVE-2023-0459, CVE-2023-1073, CVE-2023-1074, CVE-2023-1075
SHA-256 | 651ba1a89cf9b5d5fcfc6ec7f0f13b73b41225a33fc642efba219a7eab3cd1ba
Ubuntu Security Notice USN-6090-1
Posted May 19, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6090-1 - It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. Zheng Wang discovered that the Intel i915 graphics driver in the Linux kernel did not properly handle certain error conditions, leading to a double-free. A local attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-27672, CVE-2022-3707, CVE-2023-0459, CVE-2023-1075, CVE-2023-1078, CVE-2023-1118, CVE-2023-1513, CVE-2023-20938, CVE-2023-2162, CVE-2023-32269
SHA-256 | addcf4276faba9380882f43f0aa2701ba3c30a4872d00370de9952686c9ccc54
Ubuntu Security Notice USN-6085-1
Posted May 18, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6085-1 - It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. Zheng Wang discovered that the Intel i915 graphics driver in the Linux kernel did not properly handle certain error conditions, leading to a double-free. A local attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-27672, CVE-2022-3707, CVE-2023-0459, CVE-2023-1075, CVE-2023-1078, CVE-2023-1118, CVE-2023-1513, CVE-2023-20938, CVE-2023-2162, CVE-2023-32269
SHA-256 | aa3210f987aad288eceb4d47738fefdeeaba45b30f0086b998487487e95379e5
Ubuntu Security Notice USN-6080-1
Posted May 16, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6080-1 - It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. Zheng Wang discovered that the Intel i915 graphics driver in the Linux kernel did not properly handle certain error conditions, leading to a double-free. A local attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-27672, CVE-2022-3707, CVE-2023-0459, CVE-2023-1075, CVE-2023-1078, CVE-2023-1118, CVE-2023-1513, CVE-2023-20938, CVE-2023-2162, CVE-2023-32269
SHA-256 | 93ed89539e4f6a0904390e085d7eac73b19389661a8b7ebc0e5c39f0a474ec7a
Ubuntu Security Notice USN-6079-1
Posted May 16, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6079-1 - It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. Ziming Zhang discovered that the VMware Virtual GPU DRM driver in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service.

tags | advisory, denial of service, x86, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-27672, CVE-2022-36280, CVE-2022-3707, CVE-2022-4129, CVE-2022-4842, CVE-2022-48423, CVE-2022-48424, CVE-2023-0210, CVE-2023-0394, CVE-2023-0458, CVE-2023-0459, CVE-2023-1073, CVE-2023-1074, CVE-2023-1075
SHA-256 | c55226f642efc261a275c77b949560f51ecbee738f4b1ae410a64e9ef5623271
Ubuntu Security Notice USN-5978-1
Posted Mar 28, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5978-1 - It was discovered that the network queuing discipline implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-2196, CVE-2022-27672, CVE-2022-4382, CVE-2022-4842, CVE-2023-0394, CVE-2023-1073, CVE-2023-1074, CVE-2023-1075, CVE-2023-1078, CVE-2023-1281, CVE-2023-23559, CVE-2023-26545
SHA-256 | 71cd680be098e8fe6428fa0aea346ac7a027ec8f5c40c0e9df401cd20a6cbc28
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