CVE-2025-21748— ksmbd: fix integer overflows on 32 bit systems
Affected Version Matrix 14
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 0626e6641f6b467447c81dd7678a69c66f7746cf< f3b9fb2764591d792d160f375851013665a9e820 | affected |
0626e6641f6b467447c81dd7678a69c66f7746cf< 760568c1f62ea874e8fb492f9cfa4f47b4b8391e | affected | ||
0626e6641f6b467447c81dd7678a69c66f7746cf< 82f59d64e6297f270311b16b5dcf65be406d1ea3 | affected | ||
0626e6641f6b467447c81dd7678a69c66f7746cf< b4b902737746c490258de5cb55cab39e79927a67 | affected | ||
0626e6641f6b467447c81dd7678a69c66f7746cf< ecb9947fa7c99a77b04d43404c6988a0d326e4a0 | affected | ||
0626e6641f6b467447c81dd7678a69c66f7746cf< aab98e2dbd648510f8f51b83fbf4721206ccae45 | affected | ||
5.15 | affected | ||
< 5.15 | unaffected | ||
| … +6 more rows | |||
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I. Basic Information for CVE-2025-21748
Vulnerability Information
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Vulnerability Title
ksmbd: fix integer overflows on 32 bit systems
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix integer overflows on 32 bit systems On 32bit systems the addition operations in ipc_msg_alloc() can potentially overflow leading to memory corruption. Add bounds checking using KSMBD_IPC_MAX_PAYLOAD to avoid overflow.
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ksmbd驱动在32位系统上可能存在整数溢出，导致内存损坏。
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-2025-21748
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Patch · 5
Same Patch Batch · Linux · 2025-02-27 · 177 CVEs total
| CVE-2025-21756 | 7.8 HIGH | vsock: Keep the binding until socket destruction |
| CVE-2025-21773 | can: etas_es58x: fix potential NULL pointer dereference on udev->serial | |
| CVE-2025-21763 | neighbour: use RCU protection in __neigh_notify() | |
| CVE-2025-21762 | arp: use RCU protection in arp_xmit() | |
| CVE-2025-21764 | ndisc: use RCU protection in ndisc_alloc_skb() | |
| CVE-2025-21765 | ipv6: use RCU protection in ip6_default_advmss() | |
| CVE-2025-21766 | ipv4: use RCU protection in __ip_rt_update_pmtu() | |
| CVE-2025-21767 | clocksource: Use migrate_disable() to avoid calling get_random_u32() in atomic context | |
| CVE-2025-21769 | ptp: vmclock: Add .owner to vmclock_miscdev_fops | |
| CVE-2025-21768 | net: ipv6: fix dst ref loops in rpl, seg6 and ioam6 lwtunnels | |
| CVE-2025-21771 | sched_ext: Fix incorrect autogroup migration detection | |
| CVE-2025-21770 | iommu: Fix potential memory leak in iopf_queue_remove_device() | |
| CVE-2025-21777 | ring-buffer: Validate the persistent meta data subbuf array | |
| CVE-2025-21783 | gpiolib: Fix crash on error in gpiochip_get_ngpios() | |
| CVE-2025-21781 | batman-adv: fix panic during interface removal | |
| CVE-2025-21780 | drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() | |
| CVE-2025-21779 | KVM: x86: Reject Hyper-V's SEND_IPI hypercalls if local APIC isn't in-kernel | |
| CVE-2025-21778 | tracing: Do not allow mmap() of persistent ring buffer | |
| CVE-2025-21774 | can: rockchip: rkcanfd_handle_rx_fifo_overflow_int(): bail out if skb cannot be allocated | |
| CVE-2025-21772 | partitions: mac: fix handling of bogus partition table |
Showing top 20 of 177 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43492
lib/crypto: mpi: Fix integer underflow in mpi_read_raw_from_ - CVE-2026-43493
crypto: pcrypt - Fix handling of MAY_BACKLOG requests - CVE-2026-43491
net: qrtr: ns: Limit the maximum server registration per nod - CVE-2026-46333
ptrace: slightly saner 'get_dumpable()' logic - CVE-2026-43490
ksmbd: validate inherited ACE SID length
Same vendor: Linux
- CVE-2026-43492
lib/crypto: mpi: Fix integer underflow in mpi_read_raw_from_ - CVE-2026-43493
crypto: pcrypt - Fix handling of MAY_BACKLOG requests - CVE-2026-43491
net: qrtr: ns: Limit the maximum server registration per nod - CVE-2026-46333
ptrace: slightly saner 'get_dumpable()' logic - CVE-2026-43490
ksmbd: validate inherited ACE SID length
V. Comments for CVE-2025-21748
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