Read the docs
TI-2026-31561 Aliases CVE-2026-43382GHSA-36qq-553f-w4ww

batman-adv: Avoid double-rtnl_lock ELP metric worker

Priority LOW 23CWE-667Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-667 and the CVSS impact.

Summary

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 the retrieval of the ethtool information in case the RTNL lock was already held. But for cfg80211 interfaces, batadv_get_real_netdev() was called - which also uses rtnl_lock(). The approach for __ethtool_get_link_ksettings() must also be used instead and the lockless version __batadv_get_real_netdev() has to be called.

Why it matters now

EPSS 0.00095 0th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.10.253, 5.15.203, 6.1.167 +7

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.10.235 to before 5.10.253; 5.15.179 to before 5.15.203; 6.1.129 to before 6.1.167; 6.6.79 to before 6.6.130; 6.12.16 to before 6.12.78; 5.4.291 to before 5.5; 6.13.4 to before 6.145.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 5.5, 6.14Patch availableCNA
LinuxLinux6.14 and later5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 6.18.19, 6.19.9, 7.0Patch availableCNA
  • Linux VendorLinux Affected 5.10.235 to before 5.10.253; 5.15.179 to before 5.15.203; 6.1.129 to before 6.1.167; 6.6.79 to before 6.6.130; 6.12.16 to before 6.12.78; 5.4.291 to before 5.5; 6.13.4 to before 6.14 Fixed in 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 5.5, 6.14 Patch available CNA
  • Linux VendorLinux Affected 6.14 and later Fixed in 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 6.18.19, 6.19.9, 7.0 Patch available CNA

CPE configurations NVD · 9

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.4.291 to before 5.5; 5.10.235 to before 5.10.253; 5.15.179 to before 5.15.203; 6.1.129 to before 6.1.167; 6.6.79 to before 6.6.130; 6.12.16 to before 6.12.78; 6.13.4 to before 6.14; 6.14.1 to before 6.18.19; 6.19 to before 6.19.9VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.14:-:*:*:*:*:*:*6.14VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*6.14 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*6.14 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*6.14 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:*6.14 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.14:rc7:*:*:*:*:*:*6.14 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*7.0 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*7.0 rc2VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.4.291 to before 5.5; 5.10.235 to before 5.10.253; 5.15.179 to before 5.15.203; 6.1.129 to before 6.1.167; 6.6.79 to before 6.6.130; 6.12.16 to before 6.12.78; 6.13.4 to before 6.14; 6.14.1 to before 6.18.19; 6.19 to before 6.19.9 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.14:-:*:*:*:*:*:* Versions 6.14 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:* Versions 6.14 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:* Versions 6.14 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:* Versions 6.14 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:* Versions 6.14 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.14:rc7:*:*:*:*:*:* Versions 6.14 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* Versions 7.0 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* Versions 7.0 rc2 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 5.5, 6.14
  • Fix · CNA Linux (Linux) Fixed in 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 6.18.19, 6.19.9, 7.0

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 5 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-43382
  2. 2026-10-03 Alias added: GHSA-36qq-553f-w4ww

References

Patch 8

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences