{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49352", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.544Z", "datePublished": "2025-02-26T02:11:04.496Z", "dateUpdated": "2026-05-11T18:58:02.303Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T18:58:02.303Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix warning in ext4_handle_inode_extension\n\nWe got issue as follows:\nEXT4-fs error (device loop0) in ext4_reserve_inode_write:5741: Out of memory\nEXT4-fs error (device loop0): ext4_setattr:5462: inode #13: comm syz-executor.0: mark_inode_dirty error\nEXT4-fs error (device loop0) in ext4_setattr:5519: Out of memory\nEXT4-fs error (device loop0): ext4_ind_map_blocks:595: inode #13: comm syz-executor.0: Can't allocate blocks for non-extent mapped inodes with bigalloc\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 4361 at fs/ext4/file.c:301 ext4_file_write_iter+0x11c9/0x1220\nModules linked in:\nCPU: 1 PID: 4361 Comm: syz-executor.0 Not tainted 5.10.0+ #1\nRIP: 0010:ext4_file_write_iter+0x11c9/0x1220\nRSP: 0018:ffff924d80b27c00 EFLAGS: 00010282\nRAX: ffffffff815a3379 RBX: 0000000000000000 RCX: 000000003b000000\nRDX: ffff924d81601000 RSI: 00000000000009cc RDI: 00000000000009cd\nRBP: 000000000000000d R08: ffffffffbc5a2c6b R09: 0000902e0e52a96f\nR10: ffff902e2b7c1b40 R11: ffff902e2b7c1b40 R12: 000000000000000a\nR13: 0000000000000001 R14: ffff902e0e52aa10 R15: ffffffffffffff8b\nFS: 00007f81a7f65700(0000) GS:ffff902e3bc80000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: ffffffffff600400 CR3: 000000012db88001 CR4: 00000000003706e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n do_iter_readv_writev+0x2e5/0x360\n do_iter_write+0x112/0x4c0\n do_pwritev+0x1e5/0x390\n __x64_sys_pwritev2+0x7e/0xa0\n do_syscall_64+0x37/0x50\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\n\nAbove issue may happen as follows:\nAssume\ninode.i_size=4096\nEXT4_I(inode)->i_disksize=4096\n\nstep 1: set inode->i_isize = 8192\next4_setattr\n if (attr->ia_size != inode->i_size)\n EXT4_I(inode)->i_disksize = attr->ia_size;\n rc = ext4_mark_inode_dirty\n ext4_reserve_inode_write\n ext4_get_inode_loc\n __ext4_get_inode_loc\n sb_getblk --> return -ENOMEM\n ...\n if (!error) ->will not update i_size\n i_size_write(inode, attr->ia_size);\nNow:\ninode.i_size=4096\nEXT4_I(inode)->i_disksize=8192\n\nstep 2: Direct write 4096 bytes\next4_file_write_iter\n ext4_dio_write_iter\n iomap_dio_rw ->return error\n if (extend)\n ext4_handle_inode_extension\n WARN_ON_ONCE(i_size_read(inode) < EXT4_I(inode)->i_disksize);\n->Then trigger warning.\n\nTo solve above issue, if mark inode dirty failed in ext4_setattr just\nset 'EXT4_I(inode)->i_disksize' with old value." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ext4/inode.c" ], "versions": [ { "version": "b1b4705d54abedfd69dcdf42779c521aa1e0fbd3", "lessThan": "adf490083ca52ebfb0b2fe64ff1ead00c0452dd7", "status": "affected", "versionType": "git" }, { "version": "b1b4705d54abedfd69dcdf42779c521aa1e0fbd3", "lessThan": "b81d2ff6885e38fc745eeaf9565775055778fc0b", "status": "affected", "versionType": "git" }, { "version": "b1b4705d54abedfd69dcdf42779c521aa1e0fbd3", "lessThan": "e383c2aa5f02ab571530dc5c5696479672478c25", "status": "affected", "versionType": "git" }, { "version": "b1b4705d54abedfd69dcdf42779c521aa1e0fbd3", "lessThan": "1bcce88da60eccc946c0f4ed942b0f08cd565778", "status": "affected", "versionType": "git" }, { "version": "b1b4705d54abedfd69dcdf42779c521aa1e0fbd3", "lessThan": "f4534c9fc94d22383f187b9409abb3f9df2e3db3", "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/ext4/inode.c" ], "versions": [ { "version": "5.5", "status": "affected" }, { "version": "0", "lessThan": "5.5", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.121", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.46", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17.14", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.3", "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": "5.5", "versionEndExcluding": "5.10.121" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.15.46" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.17.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.18.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/adf490083ca52ebfb0b2fe64ff1ead00c0452dd7" }, { "url": "https://git.kernel.org/stable/c/b81d2ff6885e38fc745eeaf9565775055778fc0b" }, { "url": "https://git.kernel.org/stable/c/e383c2aa5f02ab571530dc5c5696479672478c25" }, { "url": "https://git.kernel.org/stable/c/1bcce88da60eccc946c0f4ed942b0f08cd565778" }, { "url": "https://git.kernel.org/stable/c/f4534c9fc94d22383f187b9409abb3f9df2e3db3" } ], "title": "ext4: fix warning in ext4_handle_inode_extension", "x_generator": { "engine": "bippy-1.2.0" } } } }