CVE-2026-45880

In the Linux kernel, the following vulnerability has been resolved: PCI/P2PDMA: Release per-CPU pgmap ref when vminsertpage fails When vminsertpage fails in p2pmemallocmmap, p2pmemallocmmap doesn't invoke percpurefput to free the per-CPU ref of pgmap acquired after genpoolallocowner, and...

UBUNTU-CVE-2026-45880

In the Linux kernel, the following vulnerability has been resolved: PCI/P2PDMA: Release per-CPU pgmap ref when vminsertpage fails When vminsertpage fails in p2pmemallocmmap, p2pmemallocmmap doesn't invoke percpurefput to free the per-CPU ref of pgmap acquired after genpoolallocowner, and...

UBUNTU-CVE-2026-45984

In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix use-after-free in iomap inline data write path The inline data buffer head dibh is being released prematurely in gfs2iomapbegin via releasemetapath while iomap-inlinedata still points to dibh-bdata. This causes a...

UBUNTU-CVE-2026-46100

In the Linux kernel, the following vulnerability has been resolved: fs: afs: revert mmapprepare change Partially reverts commit 9d5403b1036c "fs: convert most other genericfilemmap users to .mmapprepare". This is because the .mmap invocation establishes a refcount, but .mmapprepare is called at a...

UBUNTU-CVE-2026-46065

In the Linux kernel, the following vulnerability has been resolved: fbdev: defio: Disconnect deferred I/O from the lifetime of struct fbinfo Hold state of deferred I/O in struct fbdeferrediostate. Allocate an instance as part of initializing deferred I/O and remove it only after the final mapping...

CVE-2025-71304

In the Linux kernel, the following vulnerability has been resolved: smack: /smack/doi: accept previously used values Writing to /smack/doi a value that has ever been written there in the past disables networking for non-ambient labels. E.g. cat /smack/doi 3 netlabelctl -p cipso list Configured...

UBUNTU-CVE-2025-71304

In the Linux kernel, the following vulnerability has been resolved: smack: /smack/doi: accept previously used values Writing to /smack/doi a value that has ever been written there in the past disables networking for non-ambient labels. E.g. cat /smack/doi 3 netlabelctl -p cipso list Configured...

EUVD-2026-32447

In the Linux kernel, the following vulnerability has been resolved: fbdev: defio: Disconnect deferred I/O from the lifetime of struct fbinfo Hold state of deferred I/O in struct fbdeferrediostate. Allocate an instance as part of initializing deferred I/O and remove it only after the final mapping...

CVE-2026-46065

In the Linux kernel, the following vulnerability has been resolved: fbdev: defio: Disconnect deferred I/O from the lifetime of struct fbinfo Hold state of deferred I/O in struct fbdeferrediostate. Allocate an instance as part of initializing deferred I/O and remove it only after the final mapping...

EUVD-2026-32445

In the Linux kernel, the following vulnerability has been resolved: x86/shstk: Prevent deadlock during shstk sigreturn During sigreturn the shadow stack signal frame is popped. The kernel does this by reading the shadow stack using normal read accesses. When it can't assume the memory is shadow...

CVE-2026-46054 selinux: fix overlayfs mmap() and mprotect() access checks

In the Linux kernel, the following vulnerability has been resolved: selinux: fix overlayfs mmap and mprotect access checks The existing SELinux security model for overlayfs is to allow access if the current task is able to access the top level file the "user" file and the mounter's credentials ar...

CVE-2026-45983

In CVE-2026-45983, the Linux kernel NFS server (nfsd) vulnerability stems from idmap lookup upcalls during v4 request decoding: if upcall responses are delayed beyond the time limit, cache_check() postpones the request and it gets dropped, causing NFSD4_SLOT_INUSE to block subsequent SEQUENCE ope...

CVE-2026-45983 nfsd: never defer requests during idmap lookup

In the Linux kernel, the following vulnerability has been resolved: nfsd: never defer requests during idmap lookup During v4 request compound arg decoding, some ops e.g. SETATTR can trigger idmap lookup upcalls. When those upcall responses get delayed beyond the allowed time limit, cachecheck wil...

CVE-2026-45983

In the Linux kernel, the following vulnerability has been resolved: nfsd: never defer requests during idmap lookup During v4 request compound arg decoding, some ops e.g. SETATTR can trigger idmap lookup upcalls. When those upcall responses get delayed beyond the allowed time limit, cachecheck wil...

CVE-2026-45942

In the Linux kernel, the following vulnerability has been resolved: ext4: fix e4b bitmap inconsistency reports A bitmap inconsistency issue was observed during stress tests under mixed huge-page workloads. Ext4 reported multiple e4b bitmap check failures like: ext4mbcomplexscangroup:2508: group...

CVE-2026-45908 accel/amdxdna: Fix memory leak in amdxdna_ubuf_map

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix memory leak in amdxdnaubufmap The amdxdnaubufmap function allocates memory for sg and internal sg table structures, but it fails to free them if subsequent operations sgalloctablefrompages or dmamapsgtable fail...

CVE-2026-45908 accel/amdxdna: Fix memory leak in amdxdna_ubuf_map

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix memory leak in amdxdnaubufmap The amdxdnaubufmap function allocates memory for sg and internal sg table structures, but it fails to free them if subsequent operations sgalloctablefrompages or dmamapsgtable fail...

CVE-2026-45876 arm64/gcs: Fix error handling in arch_set_shadow_stack_status()

In the Linux kernel, the following vulnerability has been resolved: arm64/gcs: Fix error handling in archsetshadowstackstatus allocgcs returns an error-encoded pointer on failure, which comes from dommap, not NULL. The current NULL check fails to detect errors, which could lead to using an invali...

CVE-2025-71304 smack: /smack/doi: accept previously used values

In the Linux kernel, the following vulnerability has been resolved: smack: /smack/doi: accept previously used values Writing to /smack/doi a value that has ever been written there in the past disables networking for non-ambient labels. E.g. cat /smack/doi 3 netlabelctl -p cipso list Configured...

EUVD-2026-32048

IO::Compress versions before 2.220 for Perl can execute arbitrary code in File::GlobMapper via an attacker-controlled output glob. parseOutputGlob wraps the caller-supplied output glob string in double quotes and stores it in the parser state; getFiles then runs the stored expression through eval...