| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nzonefs: fix zonefs_iomap_begin() for reads\n\nIf a readahead is issued to a sequential zone file with an offset\nexactly equal to the current file size, the iomap type is set to\nIOMAP_UNWRITTEN, which will prevent an IO, but the iomap length is\ncalculated as 0. This causes a WARN_ON() in iomap_iter():\n\n[17309.548939] WARNING: CPU: 3 PID: 2137 at fs/iomap/iter.c:34 iomap_iter+0x9cf/0xe80\n[...]\n[17309.650907] RIP: 0010:iomap_iter+0x9cf/0xe80\n[...]\n[17309.754560] Call Trace:\n[17309.757078] <TASK>\n[17309.759240] ? lock_is_held_type+0xd8/0x130\n[17309.763531] iomap_readahead+0x1a8/0x870\n[17309.767550] ? iomap_read_folio+0x4c0/0x4c0\n[17309.771817] ? lockdep_hardirqs_on_prepare+0x400/0x400\n[17309.778848] ? lock_release+0x370/0x750\n[17309.784462] ? folio_add_lru+0x217/0x3f0\n[17309.790220] ? reacquire_held_locks+0x4e0/0x4e0\n[17309.796543] read_pages+0x17d/0xb60\n[17309.801854] ? folio_add_lru+0x238/0x3f0\n[17309.807573] ? readahead_expand+0x5f0/0x5f0\n[17309.813554] ? policy_node+0xb5/0x140\n[17309.819018] page_cache_ra_unbounded+0x27d/0x450\n[17309.825439] filemap_get_pages+0x500/0x1450\n[17309.831444] ? filemap_add_folio+0x140/0x140\n[17309.837519] ? lock_is_held_type+0xd8/0x130\n[17309.843509] filemap_read+0x28c/0x9f0\n[17309.848953] ? zonefs_file_read_iter+0x1ea/0x4d0 [zonefs]\n[17309.856162] ? trace_contention_end+0xd6/0x130\n[17309.862416] ? __mutex_lock+0x221/0x1480\n[17309.868151] ? zonefs_file_read_iter+0x166/0x4d0 [zonefs]\n[17309.875364] ? filemap_get_pages+0x1450/0x1450\n[17309.881647] ? __mutex_unlock_slowpath+0x15e/0x620\n[17309.888248] ? wait_for_completion_io_timeout+0x20/0x20\n[17309.895231] ? lock_is_held_type+0xd8/0x130\n[17309.901115] ? lock_is_held_type+0xd8/0x130\n[17309.906934] zonefs_file_read_iter+0x356/0x4d0 [zonefs]\n[17309.913750] new_sync_read+0x2d8/0x520\n[17309.919035] ? __x64_sys_lseek+0x1d0/0x1d0\n\nFurthermore, this causes iomap_readahead() to loop forever as\niomap_readahead_iter() always returns 0, making no progress.\n\nFix this by treating reads after the file size as access to holes,\nsetting the iomap type to IOMAP_HOLE, the iomap addr to IOMAP_NULL_ADDR\nand using the length argument as is for the iomap length. To simplify\nthe code with this change, zonefs_iomap_begin() is split into the read\nvariant, zonefs_read_iomap_begin() and zonefs_read_iomap_ops, and the\nwrite variant, zonefs_write_iomap_begin() and zonefs_write_iomap_ops." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "fs/zonefs/super.c" |
| ], |
| "versions": [ |
| { |
| "version": "8dcc1a9d90c10fa4143e5c17821082e5e60e46a1", |
| "lessThan": "355be6131164c5bacf2e810763835aecb6e01fcb", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "8dcc1a9d90c10fa4143e5c17821082e5e60e46a1", |
| "lessThan": "c2f71b9bb398e2e573bdc2574149f42b45efe410", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "8dcc1a9d90c10fa4143e5c17821082e5e60e46a1", |
| "lessThan": "3a7f05f104347b407e865c10be2675cd833a4e48", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "8dcc1a9d90c10fa4143e5c17821082e5e60e46a1", |
| "lessThan": "c1c1204c0d0c1dccc1310b9277fb2bd8b663d8fe", |
| "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/zonefs/super.c" |
| ], |
| "versions": [ |
| { |
| "version": "5.6", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "5.6", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.125", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.50", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.18.7", |
| "lessThanOrEqual": "5.18.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.19", |
| "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": "5.6", |
| "versionEndExcluding": "5.10.125" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.6", |
| "versionEndExcluding": "5.15.50" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.6", |
| "versionEndExcluding": "5.18.7" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.6", |
| "versionEndExcluding": "5.19" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/355be6131164c5bacf2e810763835aecb6e01fcb" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c2f71b9bb398e2e573bdc2574149f42b45efe410" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/3a7f05f104347b407e865c10be2675cd833a4e48" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c1c1204c0d0c1dccc1310b9277fb2bd8b663d8fe" |
| } |
| ], |
| "title": "zonefs: fix zonefs_iomap_begin() for reads", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2022-49706", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
