Linux · Amazon Linux · Security advisory · April 7, 2026

ALAS2023-2026-1543: Security update for 22 packages

ALAS2023-2026-1543, released April 7, 2026, fixes 158 CVEs across 22 products. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent
CVEs closed
158
3 rated Critical
Exploited
0
None reported
Highest CVSS
9.8
Base score, 0 to 10
Highest EPSS
0.0105
64th percentile

Priority of the 158 CVEs

Patch now 0 Urgent 3 High 75 Routine 80

Fixed package versions

ProductReleaseFixed in
bpftool6.12amzn 20231:6.12.77-99.140.amzn2023
bpftool6.12-debuginfoamzn 20231:6.12.77-99.140.amzn2023
kernel-livepatch-6.12.77-99.140amzn 20231:1.0-0.amzn2023
kernel6.12amzn 20231:6.12.77-99.140.amzn2023
kernel6.12-debuginfoamzn 20231:6.12.77-99.140.amzn2023
kernel6.12-debuginfo-common-aarch64amzn 20231:6.12.77-99.140.amzn2023
kernel6.12-debuginfo-common-x86_64amzn 20231:6.12.77-99.140.amzn2023
kernel6.12-develamzn 20231:6.12.77-99.140.amzn2023
kernel6.12-headersamzn 20231:6.12.77-99.140.amzn2023
kernel6.12-libbpfamzn 20231:6.12.77-99.140.amzn2023
kernel6.12-libbpf-debuginfoamzn 20231:6.12.77-99.140.amzn2023
kernel6.12-libbpf-develamzn 20231:6.12.77-99.140.amzn2023
kernel6.12-libbpf-staticamzn 20231:6.12.77-99.140.amzn2023
kernel6.12-modules-extraamzn 20231:6.12.77-99.140.amzn2023
kernel6.12-modules-extra-commonamzn 20231:6.12.77-99.140.amzn2023
kernel6.12-toolsamzn 20231:6.12.77-99.140.amzn2023
kernel6.12-tools-debuginfoamzn 20231:6.12.77-99.140.amzn2023
kernel6.12-tools-develamzn 20231:6.12.77-99.140.amzn2023
perf6.12amzn 20231:6.12.77-99.140.amzn2023
perf6.12-debuginfoamzn 20231:6.12.77-99.140.amzn2023
python3-perf6.12amzn 20231:6.12.77-99.140.amzn2023
python3-perf6.12-debuginfoamzn 20231:6.12.77-99.140.amzn2023

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
Urgent CVE-2026-46266 kernel-default: inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP (bsc#1267684).9.1 0.0047 None reported
Urgent CVE-2025-71305 drm/display/dp_mst: Add protection against 0 vcpi9.8 0.0016 None reported
Urgent CVE-2026-45899 ext4: drop extent cache when splitting extent fails9.8 0.0016 None reported
High CVE-2026-23231 netfilter: nf_tables: fix use-after-free in nf_tables_addchain()7.8 0.0105 None reported
High CVE-2026-45860 kernel-64kb: netfilter: nf_conncount: increase the connection clean up limit to 64 (bsc#1266710).7.5 0.0075 None reported
High CVE-2026-45859 netfilter: nfnetlink_queue: do shared-unconfirmed check before segmentation8.1 0.0071 None reported
High CVE-2026-43186 kernel-uek: ELSA-2026-50372: Unbreakable Enterprise kernel security update (IMPORTANT)9.8 0.0064 None reported
High CVE-2026-43304 kernel-64kb: libceph: define and enforce CEPH_MAX_KEY_LEN (bsc#1264993).9.8 0.0061 None reported
High CVE-2026-23240 tls: Fix race condition in tls_sw_cancel_work_tx()9.8 0.0056 None reported
High CVE-2026-43194 kernel-64kb: net: consume xmit errors of GSO frames (bsc#1264304).7.5 0.0053 None reported
High CVE-2026-45898 kernel-64kb: RDMA/iwcm: Fix workqueue list corruption by removing work_list (bsc#1266888).9.8 0.0053 None reported
High CVE-2026-43226 kernel-64kb: net/rds: No shortcut out of RDS_CONN_ERROR (bsc#1264544).7.5 0.0052 None reported
High CVE-2026-43230 kernel-64kb: net/rds: Clear reconnect pending bit (bsc#1264539).7.5 0.0052 None reported
High CVE-2026-43158 kernel-64kb: xfs: fix freemap adjustments when adding xattrs to leaf blocks (bsc#1264595).8.8 0.0047 None reported
High CVE-2026-43187 kernel-64kb: xfs: delete attr leaf freemap entries when empty (bsc#1264603).8.8 0.0047 None reported
High CVE-2026-43190 kernel: In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_tcpmss: check remaining length befo...8.2 0.0046 None reported
High CVE-2026-43233 kernel-64kb: netfilter: nf_conntrack_h323: fix OOB read in decode_choice() (bsc#1264337).8.2 0.0046 None reported
High CVE-2026-43199 net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query7.5 0.0042 None reported
High CVE-2026-43139 kernel-64kb: xfrm6: fix uninitialized saddr in xfrm6_get_saddr() (bsc#1264294).8.6 0.0038 None reported
High CVE-2026-43253 kernel-64kb: iommu/amd: move wait_on_sem() out of spinlock (bsc#1260593 bsc#1264419).7.5 0.0037 None reported
High CVE-2026-45972 kernel-uek: ELSA-2026-50372: Unbreakable Enterprise kernel security update (IMPORTANT)9.8 0.0033 None reported
High CVE-2026-43215 kernel-64kb: Security update for the Linux Kernel8.8 0.0032 None reported
High CVE-2026-43239 kernel-64kb: smb: client: prevent races in ->query_interfaces() (bsc#1264444).8.8 0.0029 None reported
High CVE-2026-45933 kernel-uek: ELSA-2026-50372: Unbreakable Enterprise kernel security update (IMPORTANT)7.8 0.0020 None reported
High CVE-2026-45856 kernel-64kb: RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send (bsc#1266720).8.8 0.0019 None reported
Showing 1 to 25 of 158 1Next

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