UBUNTU-CVE-2026-97410: Low severity ubuntu/linux vulnerability
In the Linux kernel, the following vulnerability has been resolved: netconsole: take targetcleanuplistlock in dropnetconsoletarget() dropnetconsoletarget() unlinks the target while only holding targetlistlock. However, when the underlying interface has been unregistered, netconsolenetdevevent() moves the target from targetlist to targetcleanuplist, and netconsoleprocesscleanupscore() walks that list under targetcleanuplistlock only. If a user removes the configfs target at the same time the cleanup worker is iterating targetcleanuplist, listdel() can corrupt the list because the two paths take disjoint locks while operating on the same list node. Acquire targetcleanuplistlock around the listdel() so the unlink is serialised against netconsoleprocesscleanupscore() regardless of which list the target currently belongs to. The state transition that downgrades STATEDEACTIVATED to STATEDISABLED is left intact and is performed under the same combined locking, preserving the existing ordering with resumetarget().
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ubuntu/linux-hwe-7.0to a version that resolves this vulnerability.Fixed in 7.0.0-42.42~24.04.1 - Upgrade
Upgrade
ubuntu/linux-riscv-7.0to a version that resolves this vulnerability.Fixed in 7.0.0-42.42.1~24.04.1 - Upgrade
Upgrade
ubuntu/linuxto a version that resolves this vulnerability.Fixed in 7.0.0-42.42 - Upgrade
Upgrade
ubuntu/linux-awsto a version that resolves this vulnerability.Fixed in 7.0.0-1016.17 - Upgrade
Upgrade
ubuntu/linux-gcpto a version that resolves this vulnerability.Fixed in 7.0.0-1016.18 - Upgrade
Upgrade
ubuntu/linux-ibmto a version that resolves this vulnerability.Fixed in 7.0.0-1017.17 - Upgrade
Upgrade
ubuntu/linux-oem-7.0to a version that resolves this vulnerability.Fixed in 7.0.0-1017.17 - Upgrade
Upgrade
ubuntu/linux-oracleto a version that resolves this vulnerability.Fixed in 7.0.0-1015.16 - Upgrade
Upgrade
ubuntu/linux-riscvto a version that resolves this vulnerability.Fixed in 7.0.0-42.42.1