Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2023-54194— exfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree

AI Predicted 5.5 Difficulty: Moderate EPSS 0.18% · P8

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 12

VendorProductVersion RangeStatus
LinuxLinux1e49a94cf707204b66a3fb242f2814712c941f52< 79d16a84ea41272dfcb0c00f9798ddd0edd8098daffected
1e49a94cf707204b66a3fb242f2814712c941f52< 8a34a242cf03211cc89f68308d149b793f63c479affected
1e49a94cf707204b66a3fb242f2814712c941f52< 1427a7e96fb90d0896f74f5bcd21feb03cc7c3d0affected
1e49a94cf707204b66a3fb242f2814712c941f52< 0c5c3e8a2550b6b2a304b45f260296db9c09df96affected
1e49a94cf707204b66a3fb242f2814712c941f52< daf60d6cca26e50d65dac374db92e58de745ad26affected
5.7affected
< 5.7unaffected
5.10.190≤ 5.10.*unaffected
… +4 more rows
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2023-54194

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
exfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: exfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree The call stack shown below is a scenario in the Linux 4.19 kernel. Allocating memory failed where exfat fs use kmalloc_array due to system memory fragmentation, while the u-disk was inserted without recognition. Devices such as u-disk using the exfat file system are pluggable and may be insert into the system at any time. However, long-term running systems cannot guarantee the continuity of physical memory. Therefore, it's necessary to address this issue. Binder:2632_6: page allocation failure: order:4, mode:0x6040c0(GFP_KERNEL|__GFP_COMP), nodemask=(null) Call trace: [242178.097582] dump_backtrace+0x0/0x4 [242178.097589] dump_stack+0xf4/0x134 [242178.097598] warn_alloc+0xd8/0x144 [242178.097603] __alloc_pages_nodemask+0x1364/0x1384 [242178.097608] kmalloc_order+0x2c/0x510 [242178.097612] kmalloc_order_trace+0x40/0x16c [242178.097618] __kmalloc+0x360/0x408 [242178.097624] load_alloc_bitmap+0x160/0x284 [242178.097628] exfat_fill_super+0xa3c/0xe7c [242178.097635] mount_bdev+0x2e8/0x3a0 [242178.097638] exfat_fs_mount+0x40/0x50 [242178.097643] mount_fs+0x138/0x2e8 [242178.097649] vfs_kern_mount+0x90/0x270 [242178.097655] do_mount+0x798/0x173c [242178.097659] ksys_mount+0x114/0x1ac [242178.097665] __arm64_sys_mount+0x24/0x34 [242178.097671] el0_svc_common+0xb8/0x1b8 [242178.097676] el0_svc_handler+0x74/0x90 [242178.097681] el0_svc+0x8/0x340 By analyzing the exfat code,we found that continuous physical memory is not required here,so kvmalloc_array is used can solve this problem.
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exfat使用kmalloc_array可能导致内存分配失败。
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 1e49a94cf707204b66a3fb242f2814712c941f52 ~ 79d16a84ea41272dfcb0c00f9798ddd0edd8098d -
LinuxLinux 5.7 -

II. Public POCs for CVE-2023-54194

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2023-54194

请登录查看更多情报信息。

Other References for CVE-2023-54194 (5)

Same Patch Batch · Linux · 2025-12-30 · 244 CVEs total

CVE-2023-541849.8 CRITICALscsi: target: iscsit: Free cmds before session free
CVE-2023-542239.8 CRITICALnet/mlx5e: xsk: Fix invalid buffer access for legacy rq
CVE-2023-542379.8 CRITICALnet/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()
CVE-2023-542579.8 CRITICALnet: macb: fix a memory corruption in extended buffer descriptor mode
CVE-2023-542589.8 CRITICALcifs: fix potential oops in cifs_oplock_break
CVE-2023-542699.8 CRITICALSUNRPC: double free xprt_ctxt while still in use
CVE-2023-542809.8 CRITICALcifs: fix potential race when tree connecting ipc
CVE-2023-542929.8 CRITICALRDMA/irdma: Fix data race on CQP request done
CVE-2023-542039.1 CRITICALksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr
CVE-2022-508808.8 HIGHwifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
CVE-2023-542628.8 HIGHnet/mlx5e: Don't clone flow post action attributes second time
CVE-2023-542148.8 HIGHBluetooth: L2CAP: Fix potential user-after-free
CVE-2023-541628.8 HIGHksmbd: fix possible memory leak in smb2_lock()
CVE-2023-543188.8 HIGHnet/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add
CVE-2023-542508.2 HIGHksmbd: avoid out of bounds access in decode_preauth_ctxt()
CVE-2023-541648.0 HIGHBluetooth: ISO: fix iso_conn related locking and validity issues
CVE-2023-542067.8 HIGHnet/sched: flower: fix filter idr initialization
CVE-2023-542027.8 HIGHdrm/i915: fix race condition UAF in i915_perf_add_config_ioctl
CVE-2023-542107.8 HIGHBluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()
CVE-2023-542437.8 HIGHnetfilter: ebtables: fix table blob use-after-free

Showing top 20 of 244 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-54194

No comments yet

Leave a comment