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CVSS: 6.6EPSS: %CPEs: 9EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix flush_tlb_range() when used for zapping normal PMDs On the following path, flush_tlb_range() can be used for zapping normal PMD entries (PMD entries that point to page tables) together with the PTE entries in the pointed-to page table: collapse_pte_mapped_thp pmdp_collapse_flush flush_tlb_range The arm64 version of flush_tlb_range() has a comment describing that it can be used for page table removal, and does not use any last-le... • https://git.kernel.org/stable/c/016c4d92cd16f569c6485ae62b076c1a4b779536 •

CVSS: 8.5EPSS: %CPEs: 8EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: acpi: nfit: fix narrowing conversion in acpi_nfit_ctl Syzkaller has reported a warning in to_nfit_bus_uuid(): "only secondary bus families can be translated". This warning is emited if the argument is equal to NVDIMM_BUS_FAMILY_NFIT == 0. Function acpi_nfit_ctl() first verifies that a user-provided value call_pkg->nd_family of type u64 is not equal to 0. Then the value is converted to int, and only after that is compared to NVDIMM_BUS_FAMIL... • https://git.kernel.org/stable/c/6450ddbd5d8e83ea9927c7f9076a21f829699e0f •

CVSS: 8.5EPSS: %CPEs: 5EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: ksmbd: add bounds check for durable handle context Add missing bounds check for durable handle context. • https://git.kernel.org/stable/c/8d4848c45943c9cf5e86142fd7347efa97f497db •

CVSS: 8.5EPSS: %CPEs: 6EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: ksmbd: add bounds check for create lease context Add missing bounds check for create lease context. • https://git.kernel.org/stable/c/629dd37acc336ad778979361c351e782053ea284 •

CVSS: 7.8EPSS: %CPEs: 6EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbd_sessions_deregister() In multichannel mode, UAF issue can occur in session_deregister when the second channel sets up a session through the connection of the first channel. session that is freed through the global session table can be accessed again through ->sessions of connection. In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbd_sessions_deregister() ... • https://git.kernel.org/stable/c/f0eb3f575138b816da74697bd506682574742fcd •

CVSS: 7.0EPSS: %CPEs: 6EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix session use-after-free in multichannel connection There is a race condition between session setup and ksmbd_sessions_deregister. The session can be freed before the connection is added to channel list of session. This patch check reference count of session before freeing it. In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix session use-after-free in multichannel connection There is a race condition be... • https://git.kernel.org/stable/c/596407adb9af1ee75fe7c7529607783d31b66e7f •

CVSS: 7.8EPSS: %CPEs: 4EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix overflow in dacloffset bounds check The dacloffset field was originally typed as int and used in an unchecked addition, which could overflow and bypass the existing bounds check in both smb_check_perm_dacl() and smb_inherit_dacl(). This could result in out-of-bounds memory access and a kernel crash when dereferencing the DACL pointer. This patch converts dacloffset to unsigned int and uses check_add_overflow() to validate access ... • https://git.kernel.org/stable/c/6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dc •

CVSS: 5.6EPSS: %CPEs: 6EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate zero num_subauth before sub_auth is accessed Access psid->sub_auth[psid->num_subauth - 1] without checking if num_subauth is non-zero leads to an out-of-bounds read. This patch adds a validation step to ensure num_subauth != 0 before sub_auth is accessed. In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate zero num_subauth before sub_auth is accessed Access psid->sub_auth[psid->num_subauth - 1... • https://git.kernel.org/stable/c/3ac65de111c686c95316ade660f8ba7aea3cd3cc •

CVSS: 7.8EPSS: %CPEs: 4EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in alloc_preauth_hash() The Client send malformed smb2 negotiate request. ksmbd return error response. Subsequently, the client can send smb2 session setup even thought conn->preauth_info is not allocated. This patch add KSMBD_SESS_NEED_SETUP status of connection to ignore session setup request if smb2 negotiate phase is not complete. In the Linux kernel, the following vulnerability has been resolved: ksm... • https://git.kernel.org/stable/c/ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad •

CVSS: 9.3EPSS: %CPEs: 4EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: exfat: fix random stack corruption after get_block When get_block is called with a buffer_head allocated on the stack, such as do_mpage_readpage, stack corruption due to buffer_head UAF may occur in the following race condition situation. mpage_read_folio <> do_mpage_readpage exfat_get_block bh_read __bh_read get_bh(bh) submit_bh wait_on_buffer ... end_buffer_read_sync __end_buffer_read_notouch unlock_buffer <