CVE-2026-64388

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix chown/chgrp with SMB3 POSIX Extensions Ownership chown and group chgrp modifications were being ignored when mounting with SMB3 POSIX Extensions unless CIFSMOUNTCIFSACL or CIFSMOUNTMODEFROMSID were also explicitly...

CVE-2026-64337

In the Linux kernel, the following vulnerability has been resolved: usb: mtu3: unmap request DMA on queue failure mtu3gadgetqueue maps the request before checking whether the QMU GPD ring can accept another transfer. the request is returned with -EAGAIN before it is linked on the endpoint request...

CVE-2026-64300

In the Linux kernel, the following vulnerability has been resolved: perf/aux: Fix page UAF in maprange maprange reads rb-auxpages, rb-auxnrpages and rb-auxpgoff via perfmmaptopage while holding only event-mmapmutex. Those fields are serialized by rb-auxmutex, and mmapmutex is per event. Thus, two...

CVE-2026-64280

In the Linux kernel, the following vulnerability has been resolved: fpga: dfl-afu: validate DMA mapping length in afudmamapregion afuioctldmamap accepts a 64-bit length from userspace via DFLFPGAPORTDMAMAP ioctl without an upper bound check. The value is passed to afudmapinpages where npages is...

UBUNTU-CVE-2026-64388

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix chown/chgrp with SMB3 POSIX Extensions Ownership chown and group chgrp modifications were being ignored when mounting with SMB3 POSIX Extensions unless CIFSMOUNTCIFSACL or CIFSMOUNTMODEFROMSID were also explicitly...

UBUNTU-CVE-2026-64280

In the Linux kernel, the following vulnerability has been resolved: fpga: dfl-afu: validate DMA mapping length in afudmamapregion afuioctldmamap accepts a 64-bit length from userspace via DFLFPGAPORTDMAMAP ioctl without an upper bound check. The value is passed to afudmapinpages where npages is...

CVE-2026-64337

In the Linux kernel, the following vulnerability has been resolved: usb: mtu3: unmap request DMA on queue failure mtu3gadgetqueue maps the request before checking whether the QMU GPD ring can accept another transfer. the request is returned with -EAGAIN before it is linked on the endpoint request...

CVE-2026-64300

In the Linux kernel, the following vulnerability has been resolved: perf/aux: Fix page UAF in maprange maprange reads rb-auxpages, rb-auxnrpages and rb-auxpgoff via perfmmaptopage while holding only event-mmapmutex. Those fields are serialized by rb-auxmutex, and mmapmutex is per event. Thus, two...

CVE-2026-64388

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix chown/chgrp with SMB3 POSIX Extensions Ownership chown and group chgrp modifications were being ignored when mounting with SMB3 POSIX Extensions unless CIFSMOUNTCIFSACL or CIFSMOUNTMODEFROMSID were also explicitly...

CVE-2026-64388

Summary: CVE-2026-64388 affects the Linux kernel SMB client when using SMB3 POSIX Extensions, where chown/chgrp updates could be ignored unless CIFS_MOUNT_CIFS_ACL or CIFS_MOUNT_MODE_FROM_SID are also set. The root cause is a missing check for posix_extensions in cifs_setattr_nounix() during UID/...

CVE-2026-64388

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix chown/chgrp with SMB3 POSIX Extensions Ownership chown and group chgrp modifications were being ignored when mounting with SMB3 POSIX Extensions unless CIFSMOUNTCIFSACL or CIFSMOUNTMODEFROMSID were also explicitly...

EUVD-2026-48932

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix chown/chgrp with SMB3 POSIX Extensions Ownership chown and group chgrp modifications were being ignored when mounting with SMB3 POSIX Extensions unless CIFSMOUNTCIFSACL or CIFSMOUNTMODEFROMSID were also explicitly...

CVE-2026-64388 smb/client: fix chown/chgrp with SMB3 POSIX Extensions

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix chown/chgrp with SMB3 POSIX Extensions Ownership chown and group chgrp modifications were being ignored when mounting with SMB3 POSIX Extensions unless CIFSMOUNTCIFSACL or CIFSMOUNTMODEFROMSID were also explicitly...

EUVD-2026-48881

In the Linux kernel, the following vulnerability has been resolved: usb: mtu3: unmap request DMA on queue failure mtu3gadgetqueue maps the request before checking whether the QMU GPD ring can accept another transfer. the request is returned with -EAGAIN before it is linked on the endpoint request...

CVE-2026-64300 perf/aux: Fix page UAF in map_range()

In the Linux kernel, the following vulnerability has been resolved: perf/aux: Fix page UAF in maprange maprange reads rb-auxpages, rb-auxnrpages and rb-auxpgoff via perfmmaptopage while holding only event-mmapmutex. Those fields are serialized by rb-auxmutex, and mmapmutex is per event. Thus, two...

CVE-2026-64300 perf/aux: Fix page UAF in map_range()

In the Linux kernel, the following vulnerability has been resolved: perf/aux: Fix page UAF in maprange maprange reads rb-auxpages, rb-auxnrpages and rb-auxpgoff via perfmmaptopage while holding only event-mmapmutex. Those fields are serialized by rb-auxmutex, and mmapmutex is per event. Thus, two...

EUVD-2026-49006

In the Linux kernel, the following vulnerability has been resolved: mm: do file ownership checks with the proper mount idmap Ever since idmapped mounts were introduced, inode ownership checks for side-channel protection in mincore and madviseMADVPAGEOUT were done against the nopmntidmap, which...

CVE-2026-64280

The CVE concerns the Linux kernel’s FPGA driver for DFL FPGA management (fpga: dfl-afu). A 64-bit length passed via the DFL_FPGA_PORT_DMA_MAP ioctl to afu_ioctl_dma_map() can overflow when computing the number of pages (length >> PAGE_SHIFT) passed to pin_user_pages_fast(), since npages is ...

CVE-2026-64280 fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region()

In the Linux kernel, the following vulnerability has been resolved: fpga: dfl-afu: validate DMA mapping length in afudmamapregion afuioctldmamap accepts a 64-bit length from userspace via DFLFPGAPORTDMAMAP ioctl without an upper bound check. The value is passed to afudmapinpages where npages is...

CVE-2026-64280

In the Linux kernel, the following vulnerability has been resolved: fpga: dfl-afu: validate DMA mapping length in afudmamapregion afuioctldmamap accepts a 64-bit length from userspace via DFLFPGAPORTDMAMAP ioctl without an upper bound check. The value is passed to afudmapinpages where npages is...