# ALAS2023-2023-251: Security update for 19 packages ALAS2023-2023-251, released July 17, 2023, fixes 10 CVEs across 19 products. None of them is reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/fix/linux/alas2023-2023-251 - Platform: Linux - Released: Jul 17, 2023 - Priority: High (Closes CVE-2023-31248, high severity) - CVEs: 10, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://alas.aws.amazon.com/AL2023/ALAS-2023-251.html ## Applies to | Product | Release | Fixed in | |---|---|---| | [bpftool](https://patchblox.com/security/data/product/linux/bpftool.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [bpftool-debuginfo](https://patchblox.com/security/data/product/linux/bpftool-debuginfo.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [kernel-debuginfo](https://patchblox.com/security/data/product/linux/kernel-debuginfo.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [kernel-debuginfo-common-aarch64](https://patchblox.com/security/data/product/linux/kernel-debuginfo-common-aarch64.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [kernel-debuginfo-common-x86_64](https://patchblox.com/security/data/product/linux/kernel-debuginfo-common-x86-64.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [kernel-devel](https://patchblox.com/security/data/product/linux/kernel-devel.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [kernel-headers](https://patchblox.com/security/data/product/linux/kernel-headers.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [kernel-libbpf](https://patchblox.com/security/data/product/linux/kernel-libbpf.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [kernel-libbpf-devel](https://patchblox.com/security/data/product/linux/kernel-libbpf-devel.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [kernel-libbpf-static](https://patchblox.com/security/data/product/linux/kernel-libbpf-static.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [kernel-livepatch-6.1.38-59.109](https://patchblox.com/security/data/product/linux/kernel-livepatch-6.1.38-59.109.md) | amzn 2023 | 1.0-0.amzn2023 | | [kernel-tools](https://patchblox.com/security/data/product/linux/kernel-tools.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [kernel-tools-debuginfo](https://patchblox.com/security/data/product/linux/kernel-tools-debuginfo.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [kernel-tools-devel](https://patchblox.com/security/data/product/linux/kernel-tools-devel.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [perf](https://patchblox.com/security/data/product/linux/perf.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [perf-debuginfo](https://patchblox.com/security/data/product/linux/perf-debuginfo.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [python3-perf](https://patchblox.com/security/data/product/linux/python3-perf.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | | [python3-perf-debuginfo](https://patchblox.com/security/data/product/linux/python3-perf-debuginfo.md) | amzn 2023 | 6.1.38-59.109.amzn2023 | ## CVEs this fix closes | CVE | Priority | Title | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2023-31248](https://patchblox.com/security/data/cve/CVE-2023-31248.md) | High | linux: Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to ch... | 7.8 | 0.0189 | | | [CVE-2023-35001](https://patchblox.com/security/data/cve/CVE-2023-35001.md) | High | bpftool: netfilter: nf_tables: prevent OOB access in nft_byteorder_eval | 7.8 | 0.0154 | | | [CVE-2023-3390](https://patchblox.com/security/data/cve/CVE-2023-3390.md) | High | linux: A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c | 7.8 | 0.0091 | | | [CVE-2023-3609](https://patchblox.com/security/data/cve/CVE-2023-3609.md) | High | linux: A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local p... | 7.8 | 0.0049 | | | [CVE-2023-3610](https://patchblox.com/security/data/cve/CVE-2023-3610.md) | High | bpftool: ELSA-2023-12836: kernel security update (IMPORTANT) | 7.8 | 0.0025 | | | [CVE-2023-53217](https://patchblox.com/security/data/cve/CVE-2023-53217.md) | High | kernel-64kb: Security update for the Linux Kernel | 7.8 | 0.0017 | | | [CVE-2023-53492](https://patchblox.com/security/data/cve/CVE-2023-53492.md) | High | dtb-aarch64: Security update for the Linux Kernel | 7.8 | 0.0017 | | | [CVE-2023-54135](https://patchblox.com/security/data/cve/CVE-2023-54135.md) | High | kernel-default: Security update for the Linux Kernel | 7.8 | 0.0017 | | | [CVE-2023-53759](https://patchblox.com/security/data/cve/CVE-2023-53759.md) | High | kernel-default: Security update for the Linux Kernel | 7.8 | 0.0015 | | | [CVE-2023-3117](https://patchblox.com/security/data/cve/CVE-2023-3117.md) | High | bpftool: A use-after-free flaw was found in the Netfilter subsystem of the Linux kernel when processing named and anonymous se... | n/a | n/a | | --- Data as of 2026-11-11T07:45:43Z UTC. 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