kernel: ipv4: validate checksum_start before completing checksum

A flaw was found in the Linux kernel. A local attacker or untrusted guest virtual machine can exploit this vulnerability by transmitting network packets containing malformed checksum metadata into the IPv4 networking subsystem. This failure to validate checksum metadata can corrupt memory during...

kernel: ipv4: validate checksum_start before completing checksum

A flaw was found in the Linux kernel. A local attacker or untrusted guest virtual machine can exploit this vulnerability by transmitting network packets containing malformed checksum metadata into the IPv4 networking subsystem. This failure to validate checksum metadata can corrupt memory during...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

Exploit for CVE-2026-98432

🔥 CVE-2026-98432 — Linux Kernel IPv4 Use-After-Free...

CVE-2026-99071

A flaw was found in the Linux kernel's IPv4 networking subsystem. A local user with network administration privileges can trigger a race condition during concurrent routing table updates. This timing issue occurs when preparing route change notifications, generating an unexpected message size err...

CVE-2026-99072

A flaw was found in the Linux kernel's IPv4 networking subsystem. A local user with network administration privileges can trigger a race condition when updating routing nexthop configurations concurrently with route notifications, causing a NULL pointer dereference. This flaw can lead to a kernel...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

Vulnerabilities fixed in Linux kernel

Linux has patched vulnerabilities in the IPv4 TCP stack and the IPv4 networking subsystem of the Linux kernel. The first vulnerability involves a race condition in the IPv4 TCP stack that leads to a use-after-free of socket options during concurrent TCP SYN retransmissions or request socket...

CVE-2026-99121

A flaw was found in the Linux kernel's IPv4 networking component. A race condition in the fibrebalance function can cause a division-by-zero error when routing configurations change concurrently during route rebalancing. A local user or concurrent network event can trigger this flaw, causing the...