CVE-2026-72057

linux: In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ct: preserve tc_skb_cb across def...

CVE-2026-72057 is fixed in 76 products on 1 platform, first by DEBIAN-CVE-2026-72057, released August 15, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
8.2
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0059
48th percentile

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ct: preserve tc_skb_cb across defragmentation tcf_ct_handle_fragments() calls nf_ct_handle_fragments() without saving and restoring skb->cb. The defrag helper clears IPCB/IP6CB, which aliases the tc_skb_cb/qdisc_skb_cb control buffer. Fragmented traffic through act_ct therefore loses qdisc metadata such as pkt_segs and can trigger WARN_ON_ONCE() in qdisc_pkt_segs() when panic_on_warn is enabled. Save and restore the full tc_skb_cb around nf_ct_handle_fragments(), matching the pattern used by ovs_ct_handle_fragments().

Where it's fixed

ProductFixed inFixReleased
Linux
bpftool · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
bpftool · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
bpftool6.12 · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
bpftool6.12-debuginfo · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
bpftool6.18 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
bpftool6.18-debuginfo · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel-livepatch-6.12.100-125.179 · amzn 2023 1:1.0-0.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
kernel-livepatch-6.18.41-94.142 · amzn 2023 1:1.0-0.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel-uek · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-container · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-container · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-container-debug · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-container-debug · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-core · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-core · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-core · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-core · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-debug · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-debug · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-core · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-core · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-debug-core · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-debug-core · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-devel · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-devel · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-debug-devel · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-debug-devel · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-debug-modules · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-debug-modules · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-core · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-core · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-deprecated · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-deprecated · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-desktop · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-desktop · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-extra · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-extra · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-debug-modules-extra · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-debug-modules-extra · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-extra-netfilter · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-extra-netfilter · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-usb · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-usb · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-wireless · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-debug-modules-wireless · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-devel · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-devel · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-devel · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-devel · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-doc · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-doc · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-doc · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-doc · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-modules · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-modules · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-core · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-core · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-deprecated · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-deprecated · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-desktop · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-desktop · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-extra · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-extra · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-modules-extra · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek-modules-extra · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-extra-netfilter · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-extra-netfilter · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-usb · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-usb · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-wireless · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-modules-wireless · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-tools · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek-tools · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek64k · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek64k · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-core · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-core · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek64k-core · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek64k-core · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-devel · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-devel · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek64k-devel · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek64k-devel · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek64k-modules · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek64k-modules · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-core · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-core · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-deprecated · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-deprecated · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-desktop · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-desktop · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-extra · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-extra · ol 8 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek64k-modules-extra · ol 9 0:5.15.0-324.217.5.2.el9uek ELSA-2026-500249 Sep 4, 2026
kernel-uek64k-modules-extra · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-extra-netfilter · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-extra-netfilter · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-usb · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-usb · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-wireless · ol 10 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel-uek64k-modules-wireless · ol 9 0:6.12.0-206.104.3.3.el9uek ELSA-2026-500248 Sep 4, 2026
kernel6.12 · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
kernel6.12-debuginfo · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
kernel6.12-debuginfo-common-aarch64 · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
kernel6.12-debuginfo-common-x86_64 · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
kernel6.12-devel · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
kernel6.12-headers · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
kernel6.12-modules-extra · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
kernel6.12-modules-extra-common · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
kernel6.12-tools · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
kernel6.12-tools-debuginfo · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
kernel6.12-tools-devel · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
kernel6.18 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-debuginfo · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-debuginfo-common-aarch64 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-debuginfo-common-x86_64 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-devel · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-headers · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-modules-extra · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-modules-extra-common · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-tools · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-tools-debuginfo · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-tools-devel · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
linux · Debian 12.15 (bookworm) 6.1.187-1 DEBIAN-CVE-2026-72057 Aug 15, 2026
linux · Debian 13.5 (trixie) 6.12.100-1 DEBIAN-CVE-2026-72057 Aug 15, 2026
linux · Debian 14 7.1.5-1 DEBIAN-CVE-2026-72057 Aug 15, 2026
microvm-kernel6.18 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
perf6.12 · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
perf6.12-debuginfo · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
perf6.18 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
perf6.18-debuginfo · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
python3-perf6.12 · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
python3-perf6.12-debuginfo · amzn 2023 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057 Aug 17, 2026
python3-perf6.18 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
python3-perf6.18-debuginfo · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026

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