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CVE-2026-43382: In the Linux kernel, the following vulnerability has been resolved: batman-adv: Avoid double-rtnl_lock ELP me

24
Routine
MEDIUM 5.5WATCHLISTUPGRADE

CVE-2026-43382 is a medium-severity flaw (CVSS 5.5) affecting linux kernel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In the Linux kernel, the following vulnerability has been resolved: batman-adv: Avoid double-rtnl_lock ELP metric worker batadv_v_elp_get_throughput() might be called when the RTNL lock is already held. This could be problematic when the work queue item is cancelled via cancel_delayed_work_sync() in batadv_v_elp_iface_disable(). In this case, an rtnl_lock() would cause a deadlock. To avoid this, rtnl_trylock() was used in this function to skip

Why this priority

  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score5.5 (Medium)
Attack vectorLocal
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.1% (top 99%)
CISA exploited listNo
WeaknessCWE-667
Published2026-05-08
Last modified2026-06-17
Publisher (CNA): kernel.org · Vendor: linux

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

linux linux kernel UPGRADE
Affected: >= 5.4.291 and < 5.5 · >= 5.10.235 and < 5.10.253 · >= 5.15.179 and < 5.15.203 · >= 6.1.129 and < 6.1.167 · >= 6.6.79 and < 6.6.130 · >= 6.12.16 and < 6.12.78 · >= 6.13.4 and < 6.14 · >= 6.14.1 and < 6.18.19
Fixed in: 5.5, 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 6.14, 6.18.19, 6.19.9
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-43382?

linux kernel: upgrade to 5.5, 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 6.14, 6.18.19, 6.19.9. Exact commands for each OS are on this page.

Is CVE-2026-43382 being exploited?

CVE-2026-43382 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-43382 affect?

CVE-2026-43382 affects linux kernel. Severity is medium (CVSS 5.5). In the Linux kernel, the following vulnerability has been resolved: batman-adv: Avoid double-rtnl_lock ELP metric worker batadv_v_elp_get_throughput() might be called when the RTNL lock is already held. This could be problematic when the

How urgent is CVE-2026-43382?

Priority 24/100. On your watchlist

Software pages

Linux kernel vulnerabilities

Related CVEs

References

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