# ALAS2023-2025-901: Security update for 21 packages ALAS2023-2025-901, released March 13, 2025, fixes 18 CVEs across 21 products. None of them is reported as exploited. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/fix/linux/alas2023-2025-901 - Platform: Linux - Released: Mar 13, 2025 - Priority: Urgent (Closes CVE-2025-21858, rated Critical) - CVEs: 18, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://alas.aws.amazon.com/AL2023/ALAS-2025-901.html ## Applies to | Product | Release | Fixed in | |---|---|---| | [bpftool](https://patchblox.com/security/data/product/linux/bpftool.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [bpftool-debuginfo](https://patchblox.com/security/data/product/linux/bpftool-debuginfo.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-debuginfo](https://patchblox.com/security/data/product/linux/kernel-debuginfo.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-debuginfo-common-aarch64](https://patchblox.com/security/data/product/linux/kernel-debuginfo-common-aarch64.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-debuginfo-common-x86_64](https://patchblox.com/security/data/product/linux/kernel-debuginfo-common-x86-64.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-devel](https://patchblox.com/security/data/product/linux/kernel-devel.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-headers](https://patchblox.com/security/data/product/linux/kernel-headers.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-libbpf](https://patchblox.com/security/data/product/linux/kernel-libbpf.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-libbpf-devel](https://patchblox.com/security/data/product/linux/kernel-libbpf-devel.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-libbpf-static](https://patchblox.com/security/data/product/linux/kernel-libbpf-static.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-livepatch-6.1.130-139.222](https://patchblox.com/security/data/product/linux/kernel-livepatch-6.1.130-139.222.md) | amzn 2023 | 1.0-0.amzn2023 | | [kernel-modules-extra](https://patchblox.com/security/data/product/linux/kernel-modules-extra.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-modules-extra-common](https://patchblox.com/security/data/product/linux/kernel-modules-extra-common.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-tools](https://patchblox.com/security/data/product/linux/kernel-tools.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-tools-debuginfo](https://patchblox.com/security/data/product/linux/kernel-tools-debuginfo.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [kernel-tools-devel](https://patchblox.com/security/data/product/linux/kernel-tools-devel.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [perf](https://patchblox.com/security/data/product/linux/perf.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [perf-debuginfo](https://patchblox.com/security/data/product/linux/perf-debuginfo.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [python3-perf](https://patchblox.com/security/data/product/linux/python3-perf.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | | [python3-perf-debuginfo](https://patchblox.com/security/data/product/linux/python3-perf-debuginfo.md) | amzn 2023 | 6.1.130-139.222.amzn2023 | ## CVEs this fix closes | CVE | Priority | Title | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2025-21858](https://patchblox.com/security/data/cve/CVE-2025-21858.md) | Urgent | kernel-64kb: Security update for the Linux Kernel | 8.8 | 0.0025 | | | [CVE-2025-21844](https://patchblox.com/security/data/cve/CVE-2025-21844.md) | High | kernel-64kb: smb: client: Add check for next_buffer in receive_encrypted_standard() (bsc#1239512). | 7.8 | 0.0062 | | | [CVE-2024-53179](https://patchblox.com/security/data/cve/CVE-2024-53179.md) | High | kernel-azure: smb: client: fix use-after-free of signing key (bsc#1234921). | 7.8 | 0.0062 | | | [CVE-2023-52927](https://patchblox.com/security/data/cve/CVE-2023-52927.md) | High | kernel-64kb: netfilter: allow exp not to be removed in nf_ct_find_expectation (bsc#1239644). | 7.8 | 0.0032 | | | [CVE-2025-21702](https://patchblox.com/security/data/cve/CVE-2025-21702.md) | High | kernel-64kb: pfifo_tail_enqueue: Drop new packet when sch->limit == 0 (bsc#1237312). | 7.8 | 0.0028 | | | [CVE-2025-21864](https://patchblox.com/security/data/cve/CVE-2025-21864.md) | High | kernel-64kb: kABI fix for tcp: drop secpath at the same time as we currently drop (bsc#1239482). | 7.8 | 0.0028 | | | [CVE-2024-58005](https://patchblox.com/security/data/cve/CVE-2024-58005.md) | High | kernel-64k-debug-modules-extra: kernel: tpm: Change to kvalloc() in eventlog/acpi.c | 7.8 | 0.0025 | | | [CVE-2025-21846](https://patchblox.com/security/data/cve/CVE-2025-21846.md) | High | kernel-64kb: Security update for the Linux Kernel | 7.8 | 0.0025 | | | [CVE-2025-21887](https://patchblox.com/security/data/cve/CVE-2025-21887.md) | High | kernel-64kb: ovl: fix UAF in ovl_dentry_update_reval by moving dput() in ovl_link_up (bsc#1240176). | 7.8 | 0.0022 | | | [CVE-2025-21867](https://patchblox.com/security/data/cve/CVE-2025-21867.md) | High | kernel-64kb: bpf, test_run: Fix use-after-free issue in eth_skb_pkt_type() (bsc#1240181). | 7.8 | 0.0021 | | | [CVE-2024-57977](https://patchblox.com/security/data/cve/CVE-2024-57977.md) | High | kernel-64k-modules-core: kernel: memcg: fix soft lockup in the OOM process | 7.8 | 0.0020 | | | [CVE-2025-21875](https://patchblox.com/security/data/cve/CVE-2025-21875.md) | Routine | kernel-64kb: mptcp: always handle address removal under msk socket lock (bsc#1240168). | 5.5 | 0.0026 | | | [CVE-2024-58090](https://patchblox.com/security/data/cve/CVE-2024-58090.md) | Routine | kernel-64kb: sched/core: Prevent rescheduling when interrupts are disabled (bsc#1240324). | 5.5 | 0.0023 | | | [CVE-2025-21899](https://patchblox.com/security/data/cve/CVE-2025-21899.md) | Routine | tracing: Fix bad hist from corrupting named_triggers list | 6.0 | 0.0023 | | | [CVE-2025-21898](https://patchblox.com/security/data/cve/CVE-2025-21898.md) | Routine | kernel-64kb: ftrace: Avoid potential division by zero in function_stat_show() (bsc#1240610). | 5.5 | 0.0023 | | | [CVE-2025-21712](https://patchblox.com/security/data/cve/CVE-2025-21712.md) | Routine | md/md-bitmap: Synchronize bitmap_get_stats() with bitmap lifetime | 5.5 | 0.0022 | | | [CVE-2025-21881](https://patchblox.com/security/data/cve/CVE-2025-21881.md) | Routine | uprobes: Reject the shared zeropage in uprobe_write_opcode() | 5.5 | 0.0022 | | | [CVE-2025-21891](https://patchblox.com/security/data/cve/CVE-2025-21891.md) | Routine | ipvlan: ensure network headers are in skb linear part | 5.5 | 0.0021 | | --- Data as of 2026-11-11T07:45:43Z UTC. 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