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CVE-2025-68295— smb: client: fix memory leak in cifs_construct_tcon()

EPSS 0.07% · P21
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I. Basic Information for CVE-2025-68295

Vulnerability Information
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Vulnerability Title
smb: client: fix memory leak in cifs_construct_tcon()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix memory leak in cifs_construct_tcon() When having a multiuser mount with domain= specified and using cifscreds, cifs_set_cifscreds() will end up setting @ctx->domainname, so it needs to be freed before leaving cifs_construct_tcon(). This fixes the following memory leak reported by kmemleak: mount.cifs //srv/share /mnt -o domain=ZELDA,multiuser,... su - testuser cifscreds add -d ZELDA -u testuser ... ls /mnt/1 ... umount /mnt echo scan > /sys/kernel/debug/kmemleak cat /sys/kernel/debug/kmemleak unreferenced object 0xffff8881203c3f08 (size 8): comm "ls", pid 5060, jiffies 4307222943 hex dump (first 8 bytes): 5a 45 4c 44 41 00 cc cc ZELDA... backtrace (crc d109a8cf): __kmalloc_node_track_caller_noprof+0x572/0x710 kstrdup+0x3a/0x70 cifs_sb_tlink+0x1209/0x1770 [cifs] cifs_get_fattr+0xe1/0xf50 [cifs] cifs_get_inode_info+0xb5/0x240 [cifs] cifs_revalidate_dentry_attr+0x2d1/0x470 [cifs] cifs_getattr+0x28e/0x450 [cifs] vfs_getattr_nosec+0x126/0x180 vfs_statx+0xf6/0x220 do_statx+0xab/0x110 __x64_sys_statx+0xd5/0x130 do_syscall_64+0xbb/0x380 entry_SYSCALL_64_after_hwframe+0x77/0x7f
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cifs_construct_tcon内存释放不当，可能导致内存泄漏。
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 f2aee329a68f5a907bcff11a109dfe17c0b41aeb ~ ff8f9bd1c46ee02d5558293915d42e82646d5ee9 -
LinuxLinux 5.3 -

II. Public POCs for CVE-2025-68295

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III. Intelligence Information for CVE-2025-68295

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Same Patch Batch · Linux · 2025-12-16 · 157 CVEs total

CVE-2025-682639.8 CRITICALksmbd: ipc: fix use-after-free in ipc_msg_send_request
CVE-2025-68259KVM: SVM: Don't skip unrelated instruction if INT3/INTO is replaced
CVE-2025-68250hung_task: fix warnings caused by unaligned lock pointers
CVE-2025-68251erofs: avoid infinite loops due to corrupted subpage compact indexes
CVE-2025-68252misc: fastrpc: Fix dma_buf object leak in fastrpc_map_lookup
CVE-2025-68253mm: don't spin in add_stack_record when gfp flags don't allow
CVE-2025-68254staging: rtl8723bs: fix out-of-bounds read in OnBeacon ESR IE parsing
CVE-2025-68255staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing
CVE-2025-68256staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser
CVE-2025-68257comedi: check device's attached status in compat ioctls
CVE-2025-68258comedi: multiq3: sanitize config options in multiq3_attach()
CVE-2025-68264ext4: refresh inline data size before write operations
CVE-2025-68282usb: gadget: udc: fix use-after-free in usb_gadget_state_work
CVE-2025-68281ASoC: SDCA: bug fix while parsing mipi-sdca-control-cn-list
CVE-2025-68266bfs: Reconstruct file type when loading from disk
CVE-2025-68265nvme: fix admin request_queue lifetime
CVE-2025-68261ext4: add i_data_sem protection in ext4_destroy_inline_data_nolock()
CVE-2025-68260rust_binder: fix race condition on death_list
CVE-2025-68249most: usb: hdm_probe: Fix calling put_device() before device initialization
CVE-2025-68262crypto: zstd - fix double-free in per-CPU stream cleanup

Showing top 20 of 157 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-68295

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