8.2

CVE-2026-72057

net/sched: act_ct: preserve tc_skb_cb across defragmentation

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().
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 0d76daf2013ce1da20eab5e26bd81d983e1c18fb
Version < fb080b6f54835d5d4d11ce3122800e6f0f6689e6
Status affected
Version ec624fe740b416fb68d536b37fb8eef46f90b5c2
Version < 67d6b00a54446c008f52cf70fc0c2ad0c712f85d
Status affected
Version ec624fe740b416fb68d536b37fb8eef46f90b5c2
Version < 2400c4b05d58834b994500a9eec90a37db44187c
Status affected
Version ec624fe740b416fb68d536b37fb8eef46f90b5c2
Version < 5c3ae5f6c7c6de73ea9b6a75154fe4ed343e1bac
Status affected
Version ec624fe740b416fb68d536b37fb8eef46f90b5c2
Version < b3d835407846134b0d54637c0281b39bebef831d
Status affected
Version ec624fe740b416fb68d536b37fb8eef46f90b5c2
Version < f7f45ceb855d9ba1cba594fb3f383255f7013fad
Status affected
Version ec624fe740b416fb68d536b37fb8eef46f90b5c2
Version < 9092e15defbe6c7bc241c306093ca9d358a578e7
Status affected
Version 5.15.13
Version < 5.15.217
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 5.16
Status affected
Version 0
Version < 5.16
Status unaffected
Version <= 5.15.*
Version 5.15.217
Status unaffected
Version <= 6.1.*
Version 6.1.184
Status unaffected
Version <= 6.6.*
Version 6.6.145
Status unaffected
Version <= 6.12.*
Version 6.12.97
Status unaffected
Version <= 6.18.*
Version 6.18.40
Status unaffected
Version <= 7.1.*
Version 7.1.5
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.55% 0.436
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 8.2 3.9 4.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/2400c4b05d58834b994500a9eec90a37db44187c
https://git.kernel.org/stable/c/5c3ae5f6c7c6de73ea9b6a75154fe4ed343e1bac
https://git.kernel.org/stable/c/b3d835407846134b0d54637c0281b39bebef831d
https://git.kernel.org/stable/c/f7f45ceb855d9ba1cba594fb3f383255f7013fad
https://git.kernel.org/stable/c/9092e15defbe6c7bc241c306093ca9d358a578e7
https://git.kernel.org/stable/c/67d6b00a54446c008f52cf70fc0c2ad0c712f85d
https://git.kernel.org/stable/c/fb080b6f54835d5d4d11ce3122800e6f0f6689e6