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CVE-2021-45868

Status Candidate

Overview

In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.

Related Files

Ubuntu Security Notice USN-6014-1
Posted Apr 13, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6014-1 - Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP implementation in the Linux kernel did not properly handle IPID assignment. A remote attacker could use this to cause a denial of service or inject forged data. Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk, Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre Variant 2 mitigations for AMD processors on Linux were insufficient in some situations. A local attacker could possibly use this to expose sensitive information.

tags | advisory, remote, denial of service, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2020-36516, CVE-2021-26401, CVE-2021-28713, CVE-2021-3428, CVE-2021-3659, CVE-2021-3669, CVE-2021-3732, CVE-2021-3772, CVE-2021-4149, CVE-2021-4203, CVE-2021-45868, CVE-2022-0487, CVE-2022-0494, CVE-2022-0617
SHA-256 | b35ca435930e16fd5c80695ace0a0339c873cee40fdedf7c96c3a446b1a7ff00
Ubuntu Security Notice USN-6013-1
Posted Apr 12, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6013-1 - Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP implementation in the Linux kernel did not properly handle IPID assignment. A remote attacker could use this to cause a denial of service or inject forged data. Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk, Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre Variant 2 mitigations for AMD processors on Linux were insufficient in some situations. A local attacker could possibly use this to expose sensitive information.

tags | advisory, remote, denial of service, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2020-36516, CVE-2021-26401, CVE-2021-3428, CVE-2021-3659, CVE-2021-3669, CVE-2021-3732, CVE-2021-3772, CVE-2021-4149, CVE-2021-4203, CVE-2021-45868, CVE-2022-0487, CVE-2022-0494, CVE-2022-0617, CVE-2022-1016
SHA-256 | a9c225928b1c28bf90c101180a361e5db4576ba6b23acb6d2f68a5da43566ceb
Ubuntu Security Notice USN-6001-1
Posted Apr 6, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6001-1 - Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP implementation in the Linux kernel did not properly handle IPID assignment. A remote attacker could use this to cause a denial of service or inject forged data. Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk, Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre Variant 2 mitigations for AMD processors on Linux were insufficient in some situations. A local attacker could possibly use this to expose sensitive information.

tags | advisory, remote, denial of service, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2020-36516, CVE-2021-26401, CVE-2021-28713, CVE-2021-3428, CVE-2021-3659, CVE-2021-3669, CVE-2021-3732, CVE-2021-3772, CVE-2021-4149, CVE-2021-4203, CVE-2021-45868, CVE-2022-0487, CVE-2022-0494, CVE-2022-0617
SHA-256 | 41aeeefd2d4b93824f7651b99bd053dcc55a7bddef73bc96c89bc61e6121be0c
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