# CVE-2023-34319: linux: The fix for XSA-423 added logic to Linux'es netback driver to deal with a frontend splitting a packet in a way such t... CVE-2023-34319 is fixed in 20 products on 1 platform, first by ALAS2023-2023-330, released August 31, 2023. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2023-34319 - Priority: High - CVSS: 7.8 (high) - EPSS: 0.0029 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Aug 31, 2023 ## Description The fix for XSA-423 added logic to Linux'es netback driver to deal with a frontend splitting a packet in a way such that not all of the headers would come in one piece. Unfortunately the logic introduced there didn't account for the extreme case of the entire packet being split into as many pieces as permitted by the protocol, yet still being smaller than the area that's specially dealt with to keep all (possible) headers together. Such an unusual packet would therefore trigger a buffer overrun in the driver. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | bpftool-debuginfo amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel-debuginfo amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel-devel amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel-headers amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel-libbpf amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel-libbpf-devel amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel-libbpf-static amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel-livepatch-6.1.49-69.116 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel-tools amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel-tools-debuginfo amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | kernel-tools-devel amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | linux Debian 12.15 (bookworm) | 6.1.52-1 | [DEBIAN-CVE-2023-34319](https://patchblox.com/security/data/fix/linux/debian-cve-2023-34319.md) | Sep 22, 2023 | | Linux | linux Debian 13.5 (trixie) | 6.4.11-1 | [DEBIAN-CVE-2023-34319](https://patchblox.com/security/data/fix/linux/debian-cve-2023-34319.md) | Sep 22, 2023 | | Linux | linux Debian 14 | 6.4.11-1 | [DEBIAN-CVE-2023-34319](https://patchblox.com/security/data/fix/linux/debian-cve-2023-34319.md) | Sep 22, 2023 | | Linux | perf amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | perf-debuginfo amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | python3-perf amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | | Linux | python3-perf-debuginfo amzn 2023 | 6.1.49-69.116.amzn2023 | [ALAS2023-2023-330](https://patchblox.com/security/data/fix/linux/alas2023-2023-330.md) | Aug 31, 2023 | --- Data as of 2026-11-08T19:12:23Z UTC. 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