{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2023-52900", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-52900", "idYear": 2023, "status": "PUBLISHED", "publishedAt": "2024-08-21T06:10:40.533Z", "updatedAt": "2026-05-11T19:35:09.947Z", "importedAt": "2026-10-24T01:57:03.413Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "nilfs2: fix general protection fault in nilfs_btree_insert()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix general protection fault in nilfs_btree_insert()\n\nIf nilfs2 reads a corrupted disk image and tries to reads a b-tree node\nblock by calling __nilfs_btree_get_block() against an invalid virtual\nblock address, it returns -ENOENT because conversion of the virtual block\naddress to a disk block address fails. However, this return value is the\nsame as the internal code that b-tree lookup routines return to indicate\nthat the block being searched does not exist, so functions that operate on\nthat b-tree may misbehave.\n\nWhen nilfs_btree_insert() receives this spurious 'not found' code from\nnilfs_btree_do_lookup(), it misunderstands that the 'not found' check was\nsuccessful and continues the insert operation using incomplete lookup path\ndata, causing the following crash:\n\n general protection fault, probably for non-canonical address\n 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN\n KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]\n ...\n RIP: 0010:nilfs_btree_get_nonroot_node fs/nilfs2/btree.c:418 [inline]\n RIP: 0010:nilfs_btree_prepare_insert fs/nilfs2/btree.c:1077 [inline]\n RIP: 0010:nilfs_btree_insert+0x6d3/0x1c10 fs/nilfs2/btree.c:1238\n Code: bc 24 80 00 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89\n ff e8 4b 02 92 fe 4d 8b 3f 49 83 c7 28 4c 89 f8 48 c1 e8 03 <42> 80 3c\n 28 00 74 08 4c 89 ff e8 2e 02 92 fe 4d 8b 3f 49 83 c7 02\n ...\n Call Trace:\n \n nilfs_bmap_do_insert fs/nilfs2/bmap.c:121 [inline]\n nilfs_bmap_insert+0x20d/0x360 fs/nilfs2/bmap.c:147\n nilfs_get_block+0x414/0x8d0 fs/nilfs2/inode.c:101\n __block_write_begin_int+0x54c/0x1a80 fs/buffer.c:1991\n __block_write_begin fs/buffer.c:2041 [inline]\n block_write_begin+0x93/0x1e0 fs/buffer.c:2102\n nilfs_write_begin+0x9c/0x110 fs/nilfs2/inode.c:261\n generic_perform_write+0x2e4/0x5e0 mm/filemap.c:3772\n __generic_file_write_iter+0x176/0x400 mm/filemap.c:3900\n generic_file_write_iter+0xab/0x310 mm/filemap.c:3932\n call_write_iter include/linux/fs.h:2186 [inline]\n new_sync_write fs/read_write.c:491 [inline]\n vfs_write+0x7dc/0xc50 fs/read_write.c:584\n ksys_write+0x177/0x2a0 fs/read_write.c:637\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n ...\n \n\nThis patch fixes the root cause of this problem by replacing the error\ncode that __nilfs_btree_get_block() returns on block address conversion\nfailure from -ENOENT to another internal code -EINVAL which means that the\nb-tree metadata is corrupted.\n\nBy returning -EINVAL, it propagates without glitches, and for all relevant\nb-tree operations, functions in the upper bmap layer output an error\nmessage indicating corrupted b-tree metadata via\nnilfs_bmap_convert_error(), and code -EIO will be eventually returned as\nit should be.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "a60be987d45dd510aeb54389526f9957cfab106c", "status": "affected", "versionType": "git", "lessThan": "3c2a2ff67d46106715c2132021b98bd057c27545" }, { "version": "a60be987d45dd510aeb54389526f9957cfab106c", "status": "affected", "versionType": "git", "lessThan": "d9fde9eab1766170ff2ade67d09178d2cfd78749" }, { "version": "a60be987d45dd510aeb54389526f9957cfab106c", "status": "affected", "versionType": "git", "lessThan": "b0ba060d3287108eba17603bee3810e4cf2c272d" }, { "version": "a60be987d45dd510aeb54389526f9957cfab106c", "status": "affected", "versionType": "git", "lessThan": "712bd74eccb9d3626a0a236641962eca8e11a243" }, { "version": "a60be987d45dd510aeb54389526f9957cfab106c", "status": "affected", "versionType": "git", "lessThan": "45627a1a6450662e1e0f8174ef07b05710a20062" }, { "version": "a60be987d45dd510aeb54389526f9957cfab106c", "status": "affected", "versionType": "git", "lessThan": "0bf463939c09e5b2c35c71ed74a5fd60a74d6a04" }, { "version": "a60be987d45dd510aeb54389526f9957cfab106c", "status": "affected", "versionType": "git", "lessThan": "7633355e5c7f29c049a9048e461427d1d8ed3051" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.30", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.30" }, { "version": "4.14.304", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.14.*" }, { "version": "4.19.271", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.230", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.165", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.90", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.8", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.2", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }