UBUNTU-CVE-2026-64295

In the Linux kernel, the following vulnerability has been resolved: mm: pageext: add count limit to pageextiternext to prevent invalid PFN access The pageext iteration API does not validate if the PFN still belongs to a valid section while advancing the iterator. When dynamically adding memory in...

UBUNTU-CVE-2026-64393

In the Linux kernel, the following vulnerability has been resolved: ksmbd: run set info with opener credentials SMB2 SETINFO handlers call path-based VFS helpers after checking the access mask granted to the SMB handle. Those helpers perform their owner, inode permission and LSM checks using the...

UBUNTU-CVE-2026-64442

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in IE loops in issueassocreq and joincmdhdl Two IE parsing loops are missing the header bounds checks before they dereference pIE-length: - issueassocreq walks pmlmeinfo-network.ies to build the...

CVE-2026-64513 KVM: x86: Unconditionally recompute CR8 intercept on PPR update

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Unconditionally recompute CR8 intercept on PPR update The TPRTHRESHOLD field in the VMCS is used by VMX to induce VM exits when the guest's virtual TPR falls under the specified threshold, allowing KVM to inject...

CVE-2026-64510 ACPI: NFIT: core: Fix acpi_nfit_init() error cleanup

In the Linux kernel, the following vulnerability has been resolved: ACPI: NFIT: core: Fix acpinfitinit error cleanup If acpinfitinit fails after adding the acpidesc object to the acpidescs list, that object is never removed from that list because the acpinfitshutdown devm action is not added for...

CVE-2026-64510

CVE-2026-64510 affects the Linux kernel and concerns the ACPI NFIT core. The vulnerability arises when acpi_nfit_init() fails after adding an acpi_desc to the acpi_descs list or when certain probe/update paths do not register a proper shutdown/remove path. This can lead to a use-after-free in nfi...

EUVD-2026-48854

In the Linux kernel, the following vulnerability has been resolved: ACPI: NFIT: core: Fix acpinfitinit error cleanup If acpinfitinit fails after adding the acpidesc object to the acpidescs list, that object is never removed from that list because the acpinfitshutdown devm action is not added for...

EUVD-2026-48793

In the Linux kernel, the following vulnerability has been resolved: staging: vmeuser: bound slave read/write to the kernbuf size The SLAVE-path helpers buffertouser and bufferfromuser copy 'count' bytes into/out of the fixed-size kernbuf sizebuf == PCIBUFSIZE == 0x20000, 128 KiB using ppos as the...

EUVD-2026-48790

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix heap buffer overflow in rtwcfg80211setwpaie supplicantie is a 256-byte array in struct securitypriv. The WPA and WPA2 IE copy paths use: memcpypadapter-securitypriv.supplicantie, &pwpa0, wpaielen + 2; wher...

CVE-2026-64445

The CVE-2026-64445 record documents concrete fixes in the Linux kernel (staging: rtl8723bs) for WEP-related issues in the OnAuth() path. Specifically, a vulnerability existed where rtw_wep_decrypt() could read beyond the frame when the frame length was shorter than WLAN_HDR_A3_LEN + iv_len + icv_...

EUVD-2026-48787

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB read in updatebeaconinfo IE loop The IE parsing loop in updatebeaconinfo advances by pIE-length + 2 each iteration but only guards on i length from one byte past the allocated receive buffer...

CVE-2026-64442 staging: rtl8723bs: fix OOB reads in IE loops in issue_assocreq() and join_cmd_hdl()

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in IE loops in issueassocreq and joincmdhdl Two IE parsing loops are missing the header bounds checks before they dereference pIE-length: - issueassocreq walks pmlmeinfo-network.ies to build the...

EUVD-2026-48785

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in rtwgetsecie, rtwgetwapiie, and rtwgetwpsattr Three IE/attribute parsing functions have missing bounds checks. rtwgetsecie and rtwgetwapiie iterate over a raw IE buffer without verifying that t...

EUVD-2026-48943

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add permission checks for FSCTLDUPLICATEEXTENTSTOFILE The FSCTLDUPLICATEEXTENTSTOFILE arm of smb2ioctl overwrites the destination file's data via vfsclonefilerange with neither the share-level KSMBDTREECONNFLAGWRITABLE che...

CVE-2026-64399 ksmbd: add permission checks for FSCTL_DUPLICATE_EXTENTS_TO_FILE

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add permission checks for FSCTLDUPLICATEEXTENTSTOFILE The FSCTLDUPLICATEEXTENTSTOFILE arm of smb2ioctl overwrites the destination file's data via vfsclonefilerange with neither the share-level KSMBDTREECONNFLAGWRITABLE che...

CVE-2026-64399

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add permission checks for FSCTLDUPLICATEEXTENTSTOFILE The FSCTLDUPLICATEEXTENTSTOFILE arm of smb2ioctl overwrites the destination file's data via vfsclonefilerange with neither the share-level KSMBDTREECONNFLAGWRITABLE che...

CVE-2026-64399

Summary: CVE-2026-64399 affects the Linux kernel ksmbd path for FSCTL_DUPLICATE_EXTENTS_TO_FILE. The vulnerability allows overwriting a destination file’s data via vfs_clone_file_range() because both the share-level KSMBD_TREE_CONN_FLAG_WRITABLE check and a per-handle daccess check were absent, a...

CVE-2026-64399 ksmbd: add permission checks for FSCTL_DUPLICATE_EXTENTS_TO_FILE

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add permission checks for FSCTLDUPLICATEEXTENTSTOFILE The FSCTLDUPLICATEEXTENTSTOFILE arm of smb2ioctl overwrites the destination file's data via vfsclonefilerange with neither the share-level KSMBDTREECONNFLAGWRITABLE che...

CVE-2026-64393 ksmbd: run set info with opener credentials

In the Linux kernel, the following vulnerability has been resolved: ksmbd: run set info with opener credentials SMB2 SETINFO handlers call path-based VFS helpers after checking the access mask granted to the SMB handle. Those helpers perform their owner, inode permission and LSM checks using the...

EUVD-2026-48937

In the Linux kernel, the following vulnerability has been resolved: ksmbd: run set info with opener credentials SMB2 SETINFO handlers call path-based VFS helpers after checking the access mask granted to the SMB handle. Those helpers perform their owner, inode permission and LSM checks using the...