CVE-2026-98653

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM subsystem on s390 architectures. In nested virtualization environments, the kernel can erroneously pass an unhandled memory fault error to host userspace when shadowing nested guest memory pages that are not yet mapped. A gue...

CVE-2026-98652

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM subsystem for the s390 architecture. A missing synchronization lock during status storing operations allows a local user with virtual machine management privileges to trigger a race condition. This flaw can lead to kernel...

CVE-2026-98651

A flaw was found in the Linux kernel's KVM Kernel-based Virtual Machine subsystem for the s390 architecture. This vulnerability occurs when memory management routines fail to properly validate an empty pointer reference during storage key operations. A local attacker could exploit this flaw to...

CVE-2026-98649

A flaw was found in the Linux kernel's KVM Kernel-based Virtual Machine subsystem on s390 architectures. A local attacker can exploit this vulnerability to cause a Denial of Service DoS or memory corruption by triggering a race condition during guest memory page destruction. This issue occurs...

CVE-2026-98648

A flaw was found in the Linux kernel's IBM s390 Ultravisor subsystem. When searching stored secrets on systems holding more than 85 secrets, the kernel incorrectly references the total secret count instead of the number of items stored in the current memory page. A local user can exploit this...

kernel: ipv4: raw: reject IP_HDRINCL packets with ihl < 5

A flaw was found in the Linux kernel's handling of IPv4 raw sockets. An unprivileged attacker with CAPNETRAW capabilities can craft and inject a malformed IPv4 packet with an invalid Internet Header Length IHL. This can lead to an out-of-bounds memory access when the packet is processed by certai...

kernel: xfs: bounds-check buffer log item's dirty bitmap

A flaw was found in the Linux kernel's XFS filesystem. A local attacker, by mounting a specially crafted XFS image, could trigger an out-of-bounds write during log recovery. This vulnerability allows for kernel heap corruption, which could lead to a denial of service or potentially arbitrary code...

kernel: inet: frags: strip GSO state from fragments before reassembly

A flaw was found in the Linux kernel's network fragment reassembly process. An unprivileged local user, or a guest in a virtualized environment, could craft specially formed IPv4 or IPv6 network fragments that incorrectly retain Generic Segmentation Offload GSO state after reassembly. This...

kernel: vfio/pci: clear vdev->msi_perm after freeing it on init failure

A flaw was found in the Linux kernel's vfio/pci component. During device initialization, a memory pointer is not properly cleared after being freed, leading to a use-after-free and double-free vulnerability. A local attacker could exploit this flaw to cause a system crash, resulting in a denial o...

K000163828: Linux kernel vulnerability CVE-2026-46125

Security Advisory Description In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: remove station if connection prep fails If connection preparation fails for MLO connections, then the interface is completely reset to non-MLD. In this case, we must not keep the...

K000163827: Linux kernel vulnerability CVE-2026-46124

Security Advisory Description In the Linux kernel, the following vulnerability has been resolved: isofs: validate block number from NFS file handle in isofsexportiget isofsfhtodentry and isofsfhtoparent pass an attacker- controlled block number ifid-block or ifid-parentblock from the NFS file...

kernel: xfs: bounds-check buffer log item's dirty bitmap

A flaw was found in the Linux kernel's XFS filesystem. A local attacker, by mounting a specially crafted XFS image, could trigger an out-of-bounds write during log recovery. This vulnerability allows for kernel heap corruption, which could lead to a denial of service or potentially arbitrary code...

kernel: vfio/pci: clear vdev->msi_perm after freeing it on init failure

A flaw was found in the Linux kernel's vfio/pci component. During device initialization, a memory pointer is not properly cleared after being freed, leading to a use-after-free and double-free vulnerability. A local attacker could exploit this flaw to cause a system crash, resulting in a denial o...

kernel: ipv4: raw: reject IP_HDRINCL packets with ihl < 5

A flaw was found in the Linux kernel's handling of IPv4 raw sockets. An unprivileged attacker with CAPNETRAW capabilities can craft and inject a malformed IPv4 packet with an invalid Internet Header Length IHL. This can lead to an out-of-bounds memory access when the packet is processed by certai...

kernel: inet: frags: strip GSO state from fragments before reassembly

A flaw was found in the Linux kernel's network fragment reassembly process. An unprivileged local user, or a guest in a virtualized environment, could craft specially formed IPv4 or IPv6 network fragments that incorrectly retain Generic Segmentation Offload GSO state after reassembly. This...

kernel: ALSA: seq: close a re-opened queue timer in the destructor

A flaw was found in the Linux kernel's ALSA Advanced Linux Sound Architecture sequencer component. An unprivileged local user with access to the sound device can exploit a timing window during the cleanup of a queue timer. This allows the user to re-open a timer that has already been closed,...

K000163826: Linux kernel vulnerabilities CVE-2026-46164 and CVE-2026-46165

Security Advisory Description CVE-2026-46164 In the Linux kernel, the following vulnerability has been resolved: btrfs: fix double free in createspaceinfosubgroup error path When kobjectinitandadd fails, the call chain is: createspaceinfosubgroup - btrfssysfsaddspaceinfotype - kobjectinitandadd -...

CVE-2026-98647

A flaw was found in the Linux kernel's BPF Berkeley Packet Filter subsystem. This vulnerability allows a local user to cause a Denial of Service DoS by crashing the kernel. When loading a specially crafted BPF program that accesses a structure with an empty flexible array member, the verifier...

CVE-2026-98646

A flaw was found in the Linux kernel's TCP subsystem. A local user running Berkeley Packet Filter BPF programs can cause a Denial of Service DoS by crashing the system. This issue occurs when destroying a listening TCP socket with pending connection requests, mistakenly invoking a sleeping...

CVE-2026-98643

A flaw was found in the Linux kernel's BPF Berkeley Packet Filter subsystem. This flaw can lead to information disclosure when a BPF socket operations program reads the round-trip time rttmin field during TCP connection handling. Because the kernel fails to verify the socket type before casting i...