# CVE-2023-46838: linux: Transmit requests in Xen's virtual network protocol can consist of multiple parts CVE-2023-46838 is fixed in 22 products on 1 platform, first by DEBIAN-CVE-2023-46838, released January 29, 2024. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2023-46838 - Priority: High - CVSS: 7.5 (high) - EPSS: 0.0118 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jan 29, 2024 ## Description Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides a certain initial portion of the to be transferred data, these parts are directly translated into what Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of length zero, lead to a de-reference of NULL in core networking code. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | bpftool-debuginfo amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-debuginfo amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-devel amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-headers amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-libbpf amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-libbpf-devel amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-libbpf-static amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-livepatch-6.1.75-99.163 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-modules-extra amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-modules-extra-common amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-tools amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-tools-debuginfo amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | kernel-tools-devel amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | linux Debian 12.15 (bookworm) | 6.1.76-1 | [DEBIAN-CVE-2023-46838](https://patchblox.com/security/data/fix/linux/debian-cve-2023-46838.md) | Jan 29, 2024 | | Linux | linux Debian 13.5 (trixie) | 6.6.15-1 | [DEBIAN-CVE-2023-46838](https://patchblox.com/security/data/fix/linux/debian-cve-2023-46838.md) | Jan 29, 2024 | | Linux | linux Debian 14 | 6.6.15-1 | [DEBIAN-CVE-2023-46838](https://patchblox.com/security/data/fix/linux/debian-cve-2023-46838.md) | Jan 29, 2024 | | Linux | perf amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | perf-debuginfo amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | python3-perf amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | | Linux | python3-perf-debuginfo amzn 2023 | 6.1.75-99.163.amzn2023 | [ALAS2023-2024-519](https://patchblox.com/security/data/fix/linux/alas2023-2024-519.md) | Feb 15, 2024 | --- Data as of 2026-11-09T01:18:40Z UTC. 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