7.8

CVE-2026-23274

netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels

In the Linux kernel, the following vulnerability has been resolved:

netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels

IDLETIMER revision 0 rules reuse existing timers by label and always call
mod_timer() on timer->timer.

If the label was created first by revision 1 with XT_IDLETIMER_ALARM,
the object uses alarm timer semantics and timer->timer is never initialized.
Reusing that object from revision 0 causes mod_timer() on an uninitialized
timer_list, triggering debugobjects warnings and possible panic when
panic_on_warn=1.

Fix this by rejecting revision 0 rule insertion when an existing timer with
the same label is of ALARM type.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 68983a354a655c35d3fb204489d383a2a051fda7
Version < 32e937dc6e97f5ed3cdfe3fc0b2b19a05e23fa44
Status affected
Version 68983a354a655c35d3fb204489d383a2a051fda7
Version < 144f88054ba0180467356f40895bd660b5dceeec
Status affected
Version 68983a354a655c35d3fb204489d383a2a051fda7
Version < 28c7cfaf0c0ab17cbd7754092116fd1af45271f9
Status affected
Version 68983a354a655c35d3fb204489d383a2a051fda7
Version < 54080355999381fed4a26129579a5765bab87491
Status affected
Version 68983a354a655c35d3fb204489d383a2a051fda7
Version < 5e7ece24c5cb75a60402aad4d803c7898ea40aa9
Status affected
Version 68983a354a655c35d3fb204489d383a2a051fda7
Version < f5ef97c13165542480a6ffdbe6f09f40bbb7cbf1
Status affected
Version 68983a354a655c35d3fb204489d383a2a051fda7
Version < f228b9ae2a7e84d1153616d8e71c4236cb1f1309
Status affected
Version 68983a354a655c35d3fb204489d383a2a051fda7
Version < 329f0b9b48ee6ab59d1ab72fef55fe8c6463a6cf
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 5.7
Status affected
Version 0
Version < 5.7
Status unaffected
Version <= 5.10.*
Version 5.10.253
Status unaffected
Version <= 5.15.*
Version 5.15.203
Status unaffected
Version <= 6.1.*
Version 6.1.167
Status unaffected
Version <= 6.6.*
Version 6.6.130
Status unaffected
Version <= 6.12.*
Version 6.12.78
Status unaffected
Version <= 6.18.*
Version 6.18.19
Status unaffected
Version <= 6.19.*
Version 6.19.9
Status unaffected
Version <= *
Version 7.0
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 0.02% 0.052
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.