AZL-59085 CVE-2025-21760 affecting package kernel for versions less than 6.6.82.1-1

In the Linux kernel, the following vulnerability has been resolved: ndisc: extend RCU protection in ndiscsendskb ndiscsendskb can be called without RTNL or RCU held. Acquire rcureadlock earlier, so that we can use devnetrcu and avoid a potential UAF...

AZL-58911 CVE-2025-21763 affecting package kernel for versions less than 5.15.180.1-1

In the Linux kernel, the following vulnerability has been resolved: neighbour: use RCU protection in neighnotify neighnotify can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF...

DEBIAN-CVE-2025-21759

In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: extend RCU protection in igmp6send igmp6send can be called without RTNL or RCU being held. Extend RCU protection so that we can safely fetch the net pointer and avoid a potential UAF. Note that we no longer can use...

UBUNTU-CVE-2025-21762

In the Linux kernel, the following vulnerability has been resolved: arp: use RCU protection in arpxmit arpxmit can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF...

UBUNTU-CVE-2025-21764

In the Linux kernel, the following vulnerability has been resolved: ndisc: use RCU protection in ndiscallocskb ndiscallocskb can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF...

UBUNTU-CVE-2025-21791

In the Linux kernel, the following vulnerability has been resolved: vrf: use RCU protection in l3mdevl3out l3mdevl3out can be called without RCU being held: rawsendmsg ippushpendingframes ipsendskb iplocalout iplocalout l3mdevipout Add rcureadlock / rcureadunlock pair to avoid a potential UAF...

UBUNTU-CVE-2025-21758

In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: add RCU protection to mldnewpack mldnewpack can be called without RTNL or RCU being held. Note that we no longer can use sockallocsendskb because ipv6.igmpsk uses GFPKERNEL allocations which can sleep. Instead use...

UBUNTU-CVE-2025-21766

In the Linux kernel, the following vulnerability has been resolved: ipv4: use RCU protection in iprtupdatepmtu iprtupdatepmtu must use RCU protection to make sure the net structure it reads does not disappear...

SUSE CVE-2022-49220

In the Linux kernel, the following vulnerability has been resolved: dax: make sure inodes are flushed before destroy cache A bug can be triggered by following command $ modprobe ndpmem && modprobe -r ndpmem 10.060014 BUG daxcache Not tainted: Objects remaining in daxcache on kmemcacheshutdown...

SUSE CVE-2022-49540

In the Linux kernel, the following vulnerability has been resolved: rcu-tasks: Fix race in schedule and flush work While booting secondary CPUs, cpusreadlock/unlock is not keeping online cpumask stable. The transient online mask results in below calltrace. 0.324121 CPU1: Booted secondary processo...

SUSE CVE-2022-49709

In the Linux kernel, the following vulnerability has been resolved: cfi: Fix cfislowpathdiag RCU usage with cpuidle RCUNONIDLE usage during cfislowpathdiag can result in an invalid RCU state in the cpuidle code path: WARNING: CPU: 1 PID: 0 at kernel/rcu/tree.c:613 rcueqsenter+0xe4/0x138 ... Call...

CVE-2025-21791

In the Linux kernel, the following vulnerability has been resolved: vrf: use RCU protection in l3mdevl3out l3mdevl3out can be called without RCU being held: rawsendmsg ippushpendingframes ipsendskb iplocalout iplocalout l3mdevipout Add rcureadlock / rcureadunlock pair to avoid a potential UAF...

CVE-2025-21791

CVE-2025-21791 affects the Linux kernel VRF path: l3mdev_l3_out() could be invoked without RCU protection, enabling a potential use-after-free. The root cause is missing rcu_read_lock()/rcu_read_unlock() around the call chain (raw_sendmsg -> ip_push_pending_frames -> ip_send_skb -> ip_lo...

CVE-2025-21791 vrf: use RCU protection in l3mdev_l3_out()

In the Linux kernel, the following vulnerability has been resolved: vrf: use RCU protection in l3mdevl3out l3mdevl3out can be called without RCU being held: rawsendmsg ippushpendingframes ipsendskb iplocalout iplocalout l3mdevipout Add rcureadlock / rcureadunlock pair to avoid a potential UAF...

CVE-2025-21791 vrf: use RCU protection in l3mdev_l3_out()

In the Linux kernel, the following vulnerability has been resolved: vrf: use RCU protection in l3mdevl3out l3mdevl3out can be called without RCU being held: rawsendmsg ippushpendingframes ipsendskb iplocalout iplocalout l3mdevipout Add rcureadlock / rcureadunlock pair to avoid a potential UAF...

CVE-2025-21791 vrf: use RCU protection in l3mdev_l3_out()

In the Linux kernel, the following vulnerability has been resolved: vrf: use RCU protection in l3mdevl3out l3mdevl3out can be called without RCU being held: rawsendmsg ippushpendingframes ipsendskb iplocalout iplocalout l3mdevipout Add rcureadlock / rcureadunlock pair to avoid a potential UAF...

CVE-2025-21766

In the Linux kernel, the following vulnerability has been resolved: ipv4: use RCU protection in iprtupdatepmtu iprtupdatepmtu must use RCU protection to make sure the net structure it reads does not disappear...

CVE-2025-21766 ipv4: use RCU protection in __ip_rt_update_pmtu()

In the Linux kernel, the following vulnerability has been resolved: ipv4: use RCU protection in iprtupdatepmtu iprtupdatepmtu must use RCU protection to make sure the net structure it reads does not disappear...

CVE-2025-21766

CVE-2025-21766 concerns the Linux kernel IPv4 path. The issue is in __ip_rt_update_pmtu(), which must use Read-Copy-Update (RCU) protection to ensure the net structure it reads cannot disappear during updates. The available connected documents confirm this vulnerability is tied to incorrect locki...

CVE-2025-21765

CVE-2025-21765 is a Linux kernel IPv6 stack issue where ip6_default_advmss() reads the net structure without proper RCU protection, risking use-after-free scenarios. The vulnerability is fixed in updated kernels across Linux distributions (examples: ALAS2KERNEL advisories for AL2 kernels 5.10/5.1...