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CVE-2023-20588

Status Candidate

Overview

A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality.

Related Files

Ubuntu Security Notice USN-6604-2
Posted Jan 30, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6604-2 - It was discovered that the ASUS HID driver in the Linux kernel did not properly handle device removal, leading to a use-after-free vulnerability. A local attacker with physical access could plug in a specially crafted USB device to cause a denial of service. Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-1079, CVE-2023-20588, CVE-2023-45863, CVE-2023-6606, CVE-2023-6931, CVE-2023-6932
SHA-256 | 87adb9a0dd630857bb46668b561ed587d03265f1d69126841b1f12420169e7bc
Ubuntu Security Notice USN-6604-1
Posted Jan 26, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6604-1 - It was discovered that the ASUS HID driver in the Linux kernel did not properly handle device removal, leading to a use-after-free vulnerability. A local attacker with physical access could plug in a specially crafted USB device to cause a denial of service. Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-1079, CVE-2023-20588, CVE-2023-45863, CVE-2023-6606, CVE-2023-6931, CVE-2023-6932
SHA-256 | d17c6353365258970841d80fc94ccc64beed6a1122b15a1bc1be29121160ed39
Ubuntu Security Notice USN-6602-1
Posted Jan 26, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6602-1 - Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. It was discovered that a race condition existed in the Linux kernel when performing operations with kernel objects, leading to an out-of-bounds write. A local attacker could use this to cause a denial of service or execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-20588, CVE-2023-45863, CVE-2023-6606, CVE-2023-6931, CVE-2023-6932
SHA-256 | e4ea46e063ed7320c58795d9803e3ac6d7fa5f331537b1801175adb5167bb09e
Ubuntu Security Notice USN-6577-1
Posted Jan 11, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6577-1 - Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. It was discovered that a race condition existed in the Linux kernel when performing operations with kernel objects, leading to an out-of-bounds write. A local attacker could use this to cause a denial of service or execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-20588, CVE-2023-45863
SHA-256 | f5c75748cbd05864595b53a3d62429463f197d9429e3dc98c4eef18615631d48
Ubuntu Security Notice USN-6466-1
Posted Nov 13, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6466-1 - Hyunwoo Kim discovered that the DVB Core driver in the Linux kernel contained a race condition during device removal, leading to a use-after- free vulnerability. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code. Hyunwoo Kim discovered that the Technotrend/Hauppauge USB DEC driver in the Linux kernel did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2022-45886, CVE-2022-45887, CVE-2022-48425, CVE-2023-1206, CVE-2023-20569, CVE-2023-20588, CVE-2023-21264, CVE-2023-2156, CVE-2023-31083, CVE-2023-3212, CVE-2023-34319, CVE-2023-3772, CVE-2023-38427, CVE-2023-38430
SHA-256 | d231e9eb22491a28681d89631f3af4b06d452c694529f3f61e5a1f1f2333a3c8
Ubuntu Security Notice USN-6386-3
Posted Oct 4, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6386-3 - Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle L2CAP socket release, leading to 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-2023-20588, CVE-2023-40283, CVE-2023-4128, CVE-2023-4569
SHA-256 | 9e6acdc1fc5617ecd41b5df8f4a74a5d8fff08867f2f3ba7e58deb983fa599cf
Ubuntu Security Notice USN-6386-2
Posted Sep 29, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6386-2 - Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle L2CAP socket release, leading to 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-2023-20588, CVE-2023-40283, CVE-2023-4128, CVE-2023-4569
SHA-256 | 7cd557b2e2e3d2b14432e8c2e2789eb58ccb6872a0ba1afc3e86b015c5384f97
Ubuntu Security Notice USN-6387-2
Posted Sep 27, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6387-2 - Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle L2CAP socket release, leading to 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-2023-20588, CVE-2023-40283, CVE-2023-4128
SHA-256 | f996b052a5d8a42382af173d99592c385d1379e5d06dd710df420741bae776f9
Ubuntu Security Notice USN-6386-1
Posted Sep 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6386-1 - Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle L2CAP socket release, leading to 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-2023-20588, CVE-2023-40283, CVE-2023-4128, CVE-2023-4569
SHA-256 | bb3fec09c344ab02a8e97c9b05a2f5ec011b794fb1ce3732497d718508ca5052
Ubuntu Security Notice USN-6387-1
Posted Sep 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6387-1 - Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle L2CAP socket release, leading to 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-2023-20588, CVE-2023-40283, CVE-2023-4128
SHA-256 | c0503fcadf446594e99db5136af477c331197a884e138a890263895d3afaf2c4
Ubuntu Security Notice USN-6384-1
Posted Sep 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6384-1 - Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. Lonial Con discovered that the netfilter subsystem in the Linux kernel contained a memory leak when handling certain element flush operations. A local attacker could use this to expose sensitive information.

tags | advisory, kernel, local, memory leak
systems | linux, ubuntu
advisories | CVE-2023-20588, CVE-2023-4569
SHA-256 | 86d4f986dbf26d2b8344d0f408ab0eb7fb4ec29c9e1181c7b908d23ecbd28bf5
Ubuntu Security Notice USN-6383-1
Posted Sep 20, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6383-1 - Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information. It was discovered that the ARM64 KVM implementation in the Linux kernel did not properly restrict hypervisor memory access. An attacker in a guest VM could use this to execute arbitrary code in the host OS.

tags | advisory, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-20588, CVE-2023-21264, CVE-2023-40283, CVE-2023-4128, CVE-2023-4569
SHA-256 | c5be03314d6525a0dd88d31e6ba90e7d12a4b76d20a1e301e71a80a7805ade26
Debian Security Advisory 5492-1
Posted Sep 11, 2023
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5492-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2023-1206, CVE-2023-1989, CVE-2023-20588, CVE-2023-2430, CVE-2023-2898, CVE-2023-34319, CVE-2023-3611, CVE-2023-3772, CVE-2023-3773, CVE-2023-3776, CVE-2023-3777, CVE-2023-3863, CVE-2023-4004, CVE-2023-4015
SHA-256 | 60277f2faef1ae1013aaa8886111d7c6bc6dc369ef63d5538109f991fe7534ea
Debian Security Advisory 5480-1
Posted Aug 21, 2023
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5480-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2022-39189, CVE-2022-4269, CVE-2023-1206, CVE-2023-1380, CVE-2023-2002, CVE-2023-2007, CVE-2023-20588, CVE-2023-2124, CVE-2023-21255, CVE-2023-21400, CVE-2023-2269, CVE-2023-2898, CVE-2023-3090, CVE-2023-31084
SHA-256 | 41dc7825fce5df5966134dc369b0fdabc89599073025de78f75ae2cf98e6b9a8
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