CVE-2025-68293— mm/huge_memory: fix NULL pointer deference when splitting folio
Possible ATT&CK Techniques 1AI
T1055 · Process InjectionAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | c010d47f107f609b9f4d6a103b6dfc53889049e9< 592db83615a9f0164472ec789c2ed34ad35f732f | affected |
c010d47f107f609b9f4d6a103b6dfc53889049e9< d1b83fbacd4397a1d2f8c6b13427a8636ae2b307 | affected | ||
c010d47f107f609b9f4d6a103b6dfc53889049e9< cff47b9e39a6abf03dde5f4f156f841b0c54bba0 | affected | ||
6.9 | affected | ||
< 6.9 | unaffected | ||
6.12.61≤ 6.12.* | unaffected | ||
6.17.11≤ 6.17.* | unaffected | ||
6.18≤ * | unaffected |
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I. Basic Information for CVE-2025-68293
Vulnerability Information
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Vulnerability Title
mm/huge_memory: fix NULL pointer deference when splitting folio
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: fix NULL pointer deference when splitting folio Commit c010d47f107f ("mm: thp: split huge page to any lower order pages") introduced an early check on the folio's order via mapping->flags before proceeding with the split work. This check introduced a bug: for shmem folios in the swap cache and truncated folios, the mapping pointer can be NULL. Accessing mapping->flags in this state leads directly to a NULL pointer dereference. This commit fixes the issue by moving the check for mapping != NULL before any attempt to access mapping->flags.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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huge_memory拆分folio时缺少空指针检查，可能导致崩溃。
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
II. Public POCs for CVE-2025-68293
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2025-68293 (3)
Same Patch Batch · Linux · 2025-12-16 · 157 CVEs total
| CVE-2025-68192 | 9.8 CRITICAL | net: usb: qmi_wwan: initialize MAC header offset in qmimux_rx_fixup |
| CVE-2025-68301 | 9.8 CRITICAL | net: atlantic: fix fragment overflow handling in RX path |
| CVE-2025-40350 | 9.8 CRITICAL | net/mlx5e: RX, Fix generating skb from non-linear xdp_buff for striding RQ |
| CVE-2025-68284 | 9.8 CRITICAL | libceph: prevent potential out-of-bounds writes in handle_auth_session_key() |
| CVE-2025-68285 | 9.8 CRITICAL | libceph: fix potential use-after-free in have_mon_and_osd_map() |
| CVE-2025-68263 | 9.8 CRITICAL | ksmbd: ipc: fix use-after-free in ipc_msg_send_request |
| CVE-2025-68315 | 9.8 CRITICAL | f2fs: fix to detect potential corrupted nid in free_nid_list |
| CVE-2025-68226 | 8.8 HIGH | smb: client: fix incomplete backport in cfids_invalidation_worker() |
| CVE-2025-68304 | 8.8 HIGH | Bluetooth: hci_core: lookup hci_conn on RX path on protocol side |
| CVE-2025-68255 | 8.8 HIGH | staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing |
| CVE-2025-68256 | 8.8 HIGH | staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser |
| CVE-2025-40362 | 8.8 HIGH | ceph: fix multifs mds auth caps issue |
| CVE-2025-68314 | 8.8 HIGH | drm/msm: make sure last_fence is always updated |
| CVE-2025-68250 | 8.2 HIGH | hung_task: fix warnings caused by unaligned lock pointers |
| CVE-2025-68175 | 7.8 HIGH | media: nxp: imx8-isi: Fix streaming cleanup on release |
| CVE-2025-68171 | 7.8 HIGH | x86/fpu: Ensure XFD state on signal delivery |
| CVE-2025-68179 | 7.8 HIGH | s390: Disable ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP |
| CVE-2025-68260 | 7.8 HIGH | rust_binder: fix race condition on death_list |
| CVE-2025-68303 | 7.8 HIGH | platform/x86: intel: punit_ipc: fix memory corruption |
| CVE-2025-68234 | 7.8 HIGH | io_uring/cmd_net: fix wrong argument types for skb_queue_splice() |
Showing top 20 of 157 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-68081
KVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to - CVE-2026-68082
libceph: fix two unsafe bare decodes in decode_lockers() - CVE-2026-68480
x86/bugs: Make Safe-RET robust against interrupt injection - CVE-2026-64604
KVM: VMX: Grab vmcs12 on CR8 interception update iff vCPU is - CVE-2026-64602
iio: adc: spear: Initialize completion before requesting IRQ
Same vendor: Linux
- CVE-2026-68081
KVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to - CVE-2026-68082
libceph: fix two unsafe bare decodes in decode_lockers() - CVE-2026-68480
x86/bugs: Make Safe-RET robust against interrupt injection - CVE-2026-64604
KVM: VMX: Grab vmcs12 on CR8 interception update iff vCPU is - CVE-2026-64602
iio: adc: spear: Initialize completion before requesting IRQ
V. Comments for CVE-2025-68293
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