{ "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-2024-45003", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-45003", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-09-04T19:54:46.276Z", "updatedAt": "2026-05-11T20:33:34.796Z", "importedAt": "2026-10-24T01:57:16.009Z", "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": "vfs: Don't evict inode under the inode lru traversing context", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nvfs: Don't evict inode under the inode lru traversing context\n\nThe inode reclaiming process(See function prune_icache_sb) collects all\nreclaimable inodes and mark them with I_FREEING flag at first, at that\ntime, other processes will be stuck if they try getting these inodes\n(See function find_inode_fast), then the reclaiming process destroy the\ninodes by function dispose_list(). Some filesystems(eg. ext4 with\nea_inode feature, ubifs with xattr) may do inode lookup in the inode\nevicting callback function, if the inode lookup is operated under the\ninode lru traversing context, deadlock problems may happen.\n\nCase 1: In function ext4_evict_inode(), the ea inode lookup could happen\n if ea_inode feature is enabled, the lookup process will be stuck\n\tunder the evicting context like this:\n\n 1. File A has inode i_reg and an ea inode i_ea\n 2. getfattr(A, xattr_buf) // i_ea is added into lru // lru->i_ea\n 3. Then, following three processes running like this:\n\n PA PB\n echo 2 > /proc/sys/vm/drop_caches\n shrink_slab\n prune_dcache_sb\n // i_reg is added into lru, lru->i_ea->i_reg\n prune_icache_sb\n list_lru_walk_one\n inode_lru_isolate\n i_ea->i_state |= I_FREEING // set inode state\n inode_lru_isolate\n __iget(i_reg)\n spin_unlock(&i_reg->i_lock)\n spin_unlock(lru_lock)\n rm file A\n i_reg->nlink = 0\n iput(i_reg) // i_reg->nlink is 0, do evict\n ext4_evict_inode\n ext4_xattr_delete_inode\n ext4_xattr_inode_dec_ref_all\n ext4_xattr_inode_iget\n ext4_iget(i_ea->i_ino)\n iget_locked\n find_inode_fast\n __wait_on_freeing_inode(i_ea) ----→ AA deadlock\n dispose_list // cannot be executed by prune_icache_sb\n wake_up_bit(&i_ea->i_state)\n\nCase 2: In deleted inode writing function ubifs_jnl_write_inode(), file\n deleting process holds BASEHD's wbuf->io_mutex while getting the\n\txattr inode, which could race with inode reclaiming process(The\n reclaiming process could try locking BASEHD's wbuf->io_mutex in\n\tinode evicting function), then an ABBA deadlock problem would\n\thappen as following:\n\n 1. File A has inode ia and a xattr(with inode ixa), regular file B has\n inode ib and a xattr.\n 2. getfattr(A, xattr_buf) // ixa is added into lru // lru->ixa\n 3. Then, following three processes running like this:\n\n PA PB PC\n echo 2 > /proc/sys/vm/drop_caches\n shrink_slab\n prune_dcache_sb\n // ib and ia are added into lru, lru->ixa->ib->ia\n prune_icache_sb\n list_lru_walk_one\n inode_lru_isolate\n ixa->i_state |= I_FREEING // set inode state\n inode_lru_isolate\n __iget(ib)\n spin_unlock(&ib->i_lock)\n spin_unlock(lru_lock)\n rm file B\n ib->nlink = 0\n rm file A\n iput(ia)\n ubifs_evict_inode(ia)\n ubifs_jnl_delete_inode(ia)\n ubifs_jnl_write_inode(ia)\n make_reservation(BASEHD) // Lock wbuf->io_mutex\n ubifs_iget(ixa->i_ino)\n iget_locked\n find_inode_fast\n __wait_on_freeing_inode(ixa)\n | iput(ib) // ib->nlink is 0, do evict\n | ubifs_evict_inode\n | ubifs_jnl_delete_inode(ib)\n ↓ ubifs_jnl_write_inode\n ABBA deadlock ←-----make_reservation(BASEHD)\n dispose_list // cannot be executed by prune_icache_sb\n wake_up_bit(&ixa->i_state)\n\nFix the possible deadlock by using new inode state flag I_LRU_ISOLATING\nto pin the inode in memory while inode_lru_isolate(\n---truncated---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "e50e5129f384ae282adebfb561189cdb19b81cee", "status": "affected", "versionType": "git", "lessThan": "3525ad25240dfdd8c78f3470911ed10aa727aa72" }, { "version": "e50e5129f384ae282adebfb561189cdb19b81cee", "status": "affected", "versionType": "git", "lessThan": "03880af02a78bc9a98b5a581f529cf709c88a9b8" }, { "version": "e50e5129f384ae282adebfb561189cdb19b81cee", "status": "affected", "versionType": "git", "lessThan": "cda54ec82c0f9d05393242b20b13f69b083f7e88" }, { "version": "e50e5129f384ae282adebfb561189cdb19b81cee", "status": "affected", "versionType": "git", "lessThan": "437741eba63bf4e437e2beb5583f8633556a2b98" }, { "version": "e50e5129f384ae282adebfb561189cdb19b81cee", "status": "affected", "versionType": "git", "lessThan": "b9bda5f6012dd00372f3a06a82ed8971a4c57c32" }, { "version": "e50e5129f384ae282adebfb561189cdb19b81cee", "status": "affected", "versionType": "git", "lessThan": "9063ab49c11e9518a3f2352434bb276cc8134c5f" }, { "version": "e50e5129f384ae282adebfb561189cdb19b81cee", "status": "affected", "versionType": "git", "lessThan": "2a0629834cd82f05d424bbc193374f9a43d1f87d" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.13", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.13" }, { "version": "5.4.283", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.225", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.166", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.107", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.48", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.10.7", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.10.*" }, { "version": "6.11", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }