CVE-2026-89557

In the Linux kernel, the following vulnerability has been resolved: md: do overflow check for sb-bblogshift in super1load In super1load, sb-bblogshift is an u8 type value loaded from on- disk superblock. It is used for badblocks API badblocksset by the following sequence, 1930 rdev-badblocks.shif...

UBUNTU-CVE-2026-81000

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tungetuser uses tun-align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request from another port to TUN or TAP. When align is...

CVE-2026-89603

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscalltraceenter for ptrace, another thread can install a seccomp filter with SECCOMPFILTERFLAGTSYNC e.g...

CVE-2026-89674

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix XDR length calculation in nfsd4ffencodelayoutget The XDR buffer size calculation in nfsd4ffencodelayoutget has multiple errors that can result in either an out-of-bounds write or leaking uninitialized kernel memory to t...

UBUNTU-CVE-2026-89674

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix XDR length calculation in nfsd4ffencodelayoutget The XDR buffer size calculation in nfsd4ffencodelayoutget has multiple errors that can result in either an out-of-bounds write or leaking uninitialized kernel memory to t...

UBUNTU-CVE-2026-89604

In the Linux kernel, the following vulnerability has been resolved: efivarfs: Rate limit statfs handler Ravi reports that statfs may be called by unprivileged users on the efivarfs mount point, which may result in a flood of calls to the QueryVariableInfo runtime service. These calls are...

CVE-2026-89746

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix use-after-free with same-name named triggers When two hist triggers on different events are registered with the same name=, the second one reuses the first as nameddata. Both are added to tr-histvars by savehistvars...

CVE-2026-89746

CVE-2026-89746 is a use-after-free in the Linux kernel's tracing subsystem, triggered when two hist triggers on different events share the same name=. The second trigger's hist_data is freed by hist_register_trigger() but its entry in tr->hist_vars is not removed, leaving a dangling pointer. A...

CVE-2026-89746 tracing: Fix use-after-free with same-name named triggers

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix use-after-free with same-name named triggers When two hist triggers on different events are registered with the same name=, the second one reuses the first as nameddata. Both are added to tr-histvars by savehistvars...

CVE-2026-89746 tracing: Fix use-after-free with same-name named triggers

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix use-after-free with same-name named triggers When two hist triggers on different events are registered with the same name=, the second one reuses the first as nameddata. Both are added to tr-histvars by savehistvars...

EUVD-2026-76658

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix use-after-free with same-name named triggers When two hist triggers on different events are registered with the same name=, the second one reuses the first as nameddata. Both are added to tr-histvars by savehistvars...

CVE-2026-89698

In the Linux kernel, the following vulnerability has been resolved: nfsd: widen nfsdgenlrqstp address fields to sockaddrstorage struct nfsdgenlrqstp declares rqdaddr and rqsaddr as plain "struct sockaddr" 16 bytes. When an IPv6 NFS client is connected, nfsdgenlrpcstatuscomposemsg casts these fiel...

EUVD-2026-76610

In the Linux kernel, the following vulnerability has been resolved: nfsd: widen nfsdgenlrqstp address fields to sockaddrstorage struct nfsdgenlrqstp declares rqdaddr and rqsaddr as plain "struct sockaddr" 16 bytes. When an IPv6 NFS client is connected, nfsdgenlrpcstatuscomposemsg casts these fiel...

CVE-2026-89698 nfsd: widen nfsd_genl_rqstp address fields to sockaddr_storage

In the Linux kernel, the following vulnerability has been resolved: nfsd: widen nfsdgenlrqstp address fields to sockaddrstorage struct nfsdgenlrqstp declares rqdaddr and rqsaddr as plain "struct sockaddr" 16 bytes. When an IPv6 NFS client is connected, nfsdgenlrpcstatuscomposemsg casts these fiel...

CVE-2026-89698 nfsd: widen nfsd_genl_rqstp address fields to sockaddr_storage

In the Linux kernel, the following vulnerability has been resolved: nfsd: widen nfsdgenlrqstp address fields to sockaddrstorage struct nfsdgenlrqstp declares rqdaddr and rqsaddr as plain "struct sockaddr" 16 bytes. When an IPv6 NFS client is connected, nfsdgenlrpcstatuscomposemsg casts these fiel...

CVE-2026-89698

CVE-2026-89698 is a Linux kernel vulnerability in the NFS daemon (nfsd) generic netlink interface. The rq_daddr and rq_saddr fields in struct nfsd_genl_rqstp are declared as struct sockaddr (16 bytes), but nfsd_genl_rpc_status_compose_msg() casts them to struct sockaddr_in6 * (28 bytes) when an I...

CVE-2026-89679

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix null dereference in nfsd4setattr for deleg timestamp attrs When a SETATTR request includes FATTR4WORD2TIMEDELEGACCESS or FATTR4WORD2TIMEDELEGMODIFY in the attribute bitmap, nfsd4setattr sets delegattrs=true and calls...

CVE-2026-89679

CVE-2026-89679 is a null pointer dereference in the Linux kernel's nfsd component. When an NFSv4 client sends a SETATTR request containing the special "one stateid" (all-0xFF bytes) along with delegation timestamp attributes (FATTR4_WORD2_TIME_DELEG_ACCESS or FATTR4_WORD2_TIME_DELEG_MODIFY), nfsd...

CVE-2026-89679 nfsd: fix null dereference in nfsd4_setattr for deleg timestamp attrs

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix null dereference in nfsd4setattr for deleg timestamp attrs When a SETATTR request includes FATTR4WORD2TIMEDELEGACCESS or FATTR4WORD2TIMEDELEGMODIFY in the attribute bitmap, nfsd4setattr sets delegattrs=true and calls...

EUVD-2026-76591

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix null dereference in nfsd4setattr for deleg timestamp attrs When a SETATTR request includes FATTR4WORD2TIMEDELEGACCESS or FATTR4WORD2TIMEDELEGMODIFY in the attribute bitmap, nfsd4setattr sets delegattrs=true and calls...