CVE-2021-28038

An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.

• CWE-770

• http://www.openwall.com/lists/oss-security/2021/03/05/1Mailing List, Patch, Third Party Advisory
• http://xenbits.xen.org/xsa/advisory-367.htmlPatch, Vendor Advisory
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2991397d23ec597405b116d96de3813420bdcbc3
• https://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/03/msg00035.htmlThird Party Advisory
• https://security.netapp.com/advisory/ntap-20210409-0001/Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/03/05/1Mailing List, Patch, Third Party Advisory
• http://xenbits.xen.org/xsa/advisory-367.htmlPatch, Vendor Advisory
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2991397d23ec597405b116d96de3813420bdcbc3
• https://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/03/msg00035.htmlThird Party Advisory
• https://security.netapp.com/advisory/ntap-20210409-0001/Third Party Advisory

Published

Mar 5, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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• CVE-2021-28032An issue was discovered in the nano_arena crate before 0.5.2…9.8
• CVE-2021-28033An issue was discovered in the byte_struct crate before 0.6.…9.8
• CVE-2021-28034An issue was discovered in the stack_dst crate before 0.6.1 …9.8
• CVE-2021-28035An issue was discovered in the stack_dst crate before 0.6.1 …9.8
• CVE-2021-28036An issue was discovered in the quinn crate before 0.7.0 for …7.5
• CVE-2021-28037An issue was discovered in the internment crate before 0.4.2…9.8
• CVE-2021-28039An issue was discovered in the Linux kernel 5.9.x through 5.…6.5
• CVE-2021-28040An issue was discovered in OSSEC 3.6.0. An uncontrolled recu…7.5
• CVE-2021-28041ssh-agent in OpenSSH before 8.5 has a double free that may b…7.1
• CVE-2021-28042Deutsche Post Mailoptimizer 4.3 before 2020-11-09 allows Dir…7.8
• CVE-2021-28047Cross-Site Scripting (XSS) in Administrative Reports in Devo…5.4
• CVE-2021-28048An overly permissive CORS policy in Devolutions Server befor…6.5