CVE-2026-23274 — Use of Uninitialized Resource in Linux
Severity
7.8HIGHNVD
EPSS
0.0%
top 96.54%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMar 20
Description
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 war…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9
Affected Packages3 packages
▶CVEListV5linux/linux68983a354a655c35d3fb204489d383a2a051fda7 — 28c7cfaf0c0ab17cbd7754092116fd1af45271f9+6
🔴Vulnerability Details
4GHSA▶
GHSA-3cwp-73f3-j7w3: In the Linux kernel, the following vulnerability has been resolved:
netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels
IDLETIMER revis↗2026-03-20
OSV▶
CVE-2026-23274: In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels IDLETIMER revisio↗2026-03-20