{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-54194","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-30T12:06:44.498Z","datePublished":"2025-12-30T12:09:01.436Z","dateUpdated":"2026-05-11T19:57:17.280Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:57:17.280Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree\n\nThe call stack shown below is a scenario in the Linux 4.19 kernel.\nAllocating memory failed where exfat fs use kmalloc_array due to\nsystem memory fragmentation, while the u-disk was inserted without\nrecognition.\nDevices such as u-disk using the exfat file system are pluggable and\nmay be insert into the system at any time.\nHowever, long-term running systems cannot guarantee the continuity of\nphysical memory. Therefore, it's necessary to address this issue.\n\nBinder:2632_6: page allocation failure: order:4,\n mode:0x6040c0(GFP_KERNEL|__GFP_COMP), nodemask=(null)\nCall trace:\n[242178.097582]  dump_backtrace+0x0/0x4\n[242178.097589]  dump_stack+0xf4/0x134\n[242178.097598]  warn_alloc+0xd8/0x144\n[242178.097603]  __alloc_pages_nodemask+0x1364/0x1384\n[242178.097608]  kmalloc_order+0x2c/0x510\n[242178.097612]  kmalloc_order_trace+0x40/0x16c\n[242178.097618]  __kmalloc+0x360/0x408\n[242178.097624]  load_alloc_bitmap+0x160/0x284\n[242178.097628]  exfat_fill_super+0xa3c/0xe7c\n[242178.097635]  mount_bdev+0x2e8/0x3a0\n[242178.097638]  exfat_fs_mount+0x40/0x50\n[242178.097643]  mount_fs+0x138/0x2e8\n[242178.097649]  vfs_kern_mount+0x90/0x270\n[242178.097655]  do_mount+0x798/0x173c\n[242178.097659]  ksys_mount+0x114/0x1ac\n[242178.097665]  __arm64_sys_mount+0x24/0x34\n[242178.097671]  el0_svc_common+0xb8/0x1b8\n[242178.097676]  el0_svc_handler+0x74/0x90\n[242178.097681]  el0_svc+0x8/0x340\n\nBy analyzing the exfat code,we found that continuous physical memory\nis not required here,so kvmalloc_array is used can solve this problem."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/exfat/balloc.c"],"versions":[{"version":"1e49a94cf707204b66a3fb242f2814712c941f52","lessThan":"79d16a84ea41272dfcb0c00f9798ddd0edd8098d","status":"affected","versionType":"git"},{"version":"1e49a94cf707204b66a3fb242f2814712c941f52","lessThan":"8a34a242cf03211cc89f68308d149b793f63c479","status":"affected","versionType":"git"},{"version":"1e49a94cf707204b66a3fb242f2814712c941f52","lessThan":"1427a7e96fb90d0896f74f5bcd21feb03cc7c3d0","status":"affected","versionType":"git"},{"version":"1e49a94cf707204b66a3fb242f2814712c941f52","lessThan":"0c5c3e8a2550b6b2a304b45f260296db9c09df96","status":"affected","versionType":"git"},{"version":"1e49a94cf707204b66a3fb242f2814712c941f52","lessThan":"daf60d6cca26e50d65dac374db92e58de745ad26","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/exfat/balloc.c"],"versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","status":"unaffected","versionType":"semver"},{"version":"5.10.190","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.126","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.45","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.4.10","lessThanOrEqual":"6.4.*","status":"unaffected","versionType":"semver"},{"version":"6.5","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.10.190"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.15.126"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.1.45"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.4.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.5"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/79d16a84ea41272dfcb0c00f9798ddd0edd8098d"},{"url":"https://git.kernel.org/stable/c/8a34a242cf03211cc89f68308d149b793f63c479"},{"url":"https://git.kernel.org/stable/c/1427a7e96fb90d0896f74f5bcd21feb03cc7c3d0"},{"url":"https://git.kernel.org/stable/c/0c5c3e8a2550b6b2a304b45f260296db9c09df96"},{"url":"https://git.kernel.org/stable/c/daf60d6cca26e50d65dac374db92e58de745ad26"}],"title":"exfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree","x_generator":{"engine":"bippy-1.2.0"}}}}