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 National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.7 < 5.10.253
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.203
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.167
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.130
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.78
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.19
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.9
Linux ≫ Linux Kernel Version 7.0 Update rc1
Linux ≫ Linux Kernel Version 7.0 Update rc2
Linux ≫ Linux Kernel Version 7.0 Update rc3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.063
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.
https://git.kernel.org/stable/c/f5ef97c13165542480a6ffdbe6f09f40bbb7cbf1
Patch
https://git.kernel.org/stable/c/f228b9ae2a7e84d1153616d8e71c4236cb1f1309
Patch
https://git.kernel.org/stable/c/329f0b9b48ee6ab59d1ab72fef55fe8c6463a6cf
Patch
https://git.kernel.org/stable/c/28c7cfaf0c0ab17cbd7754092116fd1af45271f9
Patch
https://git.kernel.org/stable/c/54080355999381fed4a26129579a5765bab87491
Patch
https://git.kernel.org/stable/c/5e7ece24c5cb75a60402aad4d803c7898ea40aa9
Patch
https://git.kernel.org/stable/c/144f88054ba0180467356f40895bd660b5dceeec
Patch
https://git.kernel.org/stable/c/32e937dc6e97f5ed3cdfe3fc0b2b19a05e23fa44
Patch
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
https://cert-portal.siemens.com/productcert/html/ssa-019113.html