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Review reviewHigh

CVE-2025-40280

Linux Linux, RUGGEDCOM RST2428P

In the Linux kernel, the following vulnerability has been resolved: tipc: Fix use-after-free in tipc_mon_reinit_self(). syzbot reported use-after-free of tipc_net(net)->monitors[] in tipc_mon_reinit_self(). [0] The array is protected by RTNL, but tipc_mon_reinit_self() iterates over it without RTNL. tipc_mon_reinit_self() is called from tipc_net_finalize(), which is always under RTNL except for tipc_net_finalize_work(). Let's hold RTNL in tipc_net_finalize_work(). [0]: BUG: KASAN: slab-use-after-free in __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] BUG: KASAN: slab-u...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2025.12.07
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: tipc: Fix use-after-free in tipc_mon_reinit_self(). syzbot reported use-after-free of tipc_net(net)->monitors[] in tipc_mon_reinit_self(). [0] The array is protected by RTNL, but tipc_mon_reinit_self() iterates over it without RTNL. tipc_mon_reinit_self() is called from tipc_net_finalize(), which is always under RTNL except for tipc_net_finalize_work(). Let's hold RTNL in tipc_net_finalize_work(). [0]: BUG: KASAN: slab-use-after-free in __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] BUG: KASAN: slab-u...

Affected product and versions

Product
Linux Linux, RUGGEDCOM RST2428P
Affected versions
>= 28845c28f842e9e55e75b2c116bff714bb039055 < 5f541300b02ef8b2af34f6f7d41ce617f3571e88, >= 46cb01eeeb86fca6afe24dda1167b0cb95424e29 < b2e77c789c234e7fe49057d2ced8f32e2d2c7901, >= 46cb01eeeb86fca6afe24dda1167b0cb95424e29 < 51b8f0ab888f8aa5dfac954918864eeda8c12c19, >= 46cb01eeeb86fca6afe24dda1167b0cb95424e29 < 499b5fa78d525c4450ebb76db83207db71efea77, >= 46cb01eeeb86fca6afe24dda1167b0cb95424e29 < c92dbf85627b5c29e52d9c120a24e785801716df, >= 46cb01eeeb86fca6afe24dda1167b0cb95424e29 < f0104977fed25ebe001fd63dab2b6b7fefad3373, >= 46cb01eeeb86fca6afe24dda1167b0cb95424e29 < fdf7c4c9af4f246323ce854e84b6aec198d49f7e, >= 46cb01eeeb86fca6afe24dda1167b0cb95424e29 < 0725e6afb55128be21a2ca36e9674f573ccec173, >= 295c9b554f6dfcd2d368fae6e6fa22ee5b79c123, >= 5.4.15 < 5.4.302, >= 4.19.99 < 4.20, >= 5.5, < V4.0
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, RUGGEDCOM RST2428P and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available