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CVE-2025-38442— block: reject bs > ps block devices when THP is disabled

EPSS 0.03% · P10

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinux47dd67532303803a87f43195e088b3b4bcf0454d< b025d81b96bfe8a62b6e3e6ac776608206ccbf6daffected
47dd67532303803a87f43195e088b3b4bcf0454d< 4cdf1bdd45ac78a088773722f009883af30ad318affected
6.15affected
< 6.15unaffected
6.15.7≤ 6.15.*unaffected
6.16≤ *unaffected
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I. Basic Information for CVE-2025-38442

Vulnerability Information
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Vulnerability Title
block: reject bs > ps block devices when THP is disabled
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: block: reject bs > ps block devices when THP is disabled If THP is disabled and when a block device with logical block size > page size is present, the following null ptr deref panic happens during boot: [ [13.2 mK AOSAN: null-ptr-deref in range [0x0000000000000000-0x0000000000K0 0 0[07] [ 13.017749] RIP: 0010:create_empty_buffers+0x3b/0x380 <snip> [ 13.025448] Call Trace: [ 13.025692] <TASK> [ 13.025895] block_read_full_folio+0x610/0x780 [ 13.026379] ? __pfx_blkdev_get_block+0x10/0x10 [ 13.027008] ? __folio_batch_add_and_move+0x1fa/0x2b0 [ 13.027548] ? __pfx_blkdev_read_folio+0x10/0x10 [ 13.028080] filemap_read_folio+0x9b/0x200 [ 13.028526] ? __pfx_filemap_read_folio+0x10/0x10 [ 13.029030] ? __filemap_get_folio+0x43/0x620 [ 13.029497] do_read_cache_folio+0x155/0x3b0 [ 13.029962] ? __pfx_blkdev_read_folio+0x10/0x10 [ 13.030381] read_part_sector+0xb7/0x2a0 [ 13.030805] read_lba+0x174/0x2c0 <snip> [ 13.045348] nvme_scan_ns+0x684/0x850 [nvme_core] [ 13.045858] ? __pfx_nvme_scan_ns+0x10/0x10 [nvme_core] [ 13.046414] ? _raw_spin_unlock+0x15/0x40 [ 13.046843] ? __switch_to+0x523/0x10a0 [ 13.047253] ? kvm_clock_get_cycles+0x14/0x30 [ 13.047742] ? __pfx_nvme_scan_ns_async+0x10/0x10 [nvme_core] [ 13.048353] async_run_entry_fn+0x96/0x4f0 [ 13.048787] process_one_work+0x667/0x10a0 [ 13.049219] worker_thread+0x63c/0xf60 As large folio support depends on THP, only allow bs > ps block devices if THP is enabled.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于禁用THP时处理逻辑块大小大于页面大小的设备可能导致空指针解引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 47dd67532303803a87f43195e088b3b4bcf0454d ~ b025d81b96bfe8a62b6e3e6ac776608206ccbf6d -
LinuxLinux 6.15 -

II. Public POCs for CVE-2025-38442

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III. Intelligence Information for CVE-2025-38442

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Same Patch Batch · Linux · 2025-07-25 · 114 CVEs total

CVE-2025-38424perf: Fix sample vs do_exit()
CVE-2025-38438ASoC: SOF: Intel: hda: Use devm_kstrdup() to avoid memleak.
CVE-2025-38437ksmbd: fix potential use-after-free in oplock/lease break ack
CVE-2025-38436drm/scheduler: signal scheduled fence when kill job
CVE-2025-38435riscv: vector: Fix context save/restore with xtheadvector
CVE-2025-38434Revert "riscv: Define TASK_SIZE_MAX for __access_ok()"
CVE-2025-38433riscv: fix runtime constant support for nommu kernels
CVE-2025-38432net: netpoll: Initialize UDP checksum field before checksumming
CVE-2025-38431smb: client: fix regression with native SMB symlinks
CVE-2025-38430nfsd: nfsd4_spo_must_allow() must check this is a v4 compound request
CVE-2025-38429bus: mhi: ep: Update read pointer only after buffer is written
CVE-2025-38428Input: ims-pcu - check record size in ims_pcu_flash_firmware()
CVE-2025-38427video: screen_info: Relocate framebuffers behind PCI bridges
CVE-2025-38425i2c: tegra: check msg length in SMBUS block read
CVE-2025-38426drm/amdgpu: Add basic validation for RAS header
CVE-2025-38413virtio-net: xsk: rx: fix the frame's length check
CVE-2025-38416NFC: nci: uart: Set tty->disc_data only in success path
CVE-2025-38415Squashfs: check return result of sb_min_blocksize
CVE-2025-38414wifi: ath12k: fix GCC_GCC_PCIE_HOT_RST definition for WCN7850
CVE-2025-38417ice: fix eswitch code memory leak in reset scenario

Showing top 20 of 114 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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