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vuln-cve/data/2025/22xxx/CVE-2025-22127.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-22127",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-12-29T08:45:45.824Z",
"datePublished": "2025-04-16T14:13:10.015Z",
"dateUpdated": "2026-10-30T12:21:16.804Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-10-30T12:21:16.804Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix potential deadloop in prepare_compress_overwrite()\n\nJan Prusakowski reported a kernel hang issue as below:\n\nWhen running xfstests on linux-next kernel (6.14.0-rc3, 6.12) I\nencountered a problem in generic/475 test where fsstress process\ngets blocked in __f2fs_write_data_pages() and the test hangs.\nThe options I used are:\n\nMKFS_OPTIONS -- -O compression -O extra_attr -O project_quota -O quota /dev/vdc\nMOUNT_OPTIONS -- -o acl,user_xattr -o discard,compress_extension=* /dev/vdc /vdc\n\nINFO: task kworker/u8:0:11 blocked for more than 122 seconds.\n Not tainted 6.14.0-rc3-xfstests-lockdep #1\n\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\ntask:kworker/u8:0 state:D stack:0 pid:11 tgid:11 ppid:2 task_flags:0x4208160 flags:0x00004000\nWorkqueue: writeback wb_workfn (flush-253:0)\nCall Trace:\n <TASK>\n __schedule+0x309/0x8e0\n schedule+0x3a/0x100\n schedule_preempt_disabled+0x15/0x30\n __mutex_lock+0x59a/0xdb0\n __f2fs_write_data_pages+0x3ac/0x400\n do_writepages+0xe8/0x290\n __writeback_single_inode+0x5c/0x360\n writeback_sb_inodes+0x22f/0x570\n wb_writeback+0xb0/0x410\n wb_do_writeback+0x47/0x2f0\n wb_workfn+0x5a/0x1c0\n process_one_work+0x223/0x5b0\n worker_thread+0x1d5/0x3c0\n kthread+0xfd/0x230\n ret_from_fork+0x31/0x50\n ret_from_fork_asm+0x1a/0x30\n </TASK>\n\nThe root cause is: once generic/475 starts toload error table to dm\ndevice, f2fs_prepare_compress_overwrite() will loop reading compressed\ncluster pages due to IO error, meanwhile it has held .writepages lock,\nit can block all other writeback tasks.\n\nLet's fix this issue w/ below changes:\n- add f2fs_handle_page_eio() in prepare_compress_overwrite() to\ndetect IO error.\n- detect cp_error earler in f2fs_read_multi_pages()."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/f2fs/compress.c",
"fs/f2fs/data.c"
],
"versions": [
{
"version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
"lessThan": "353b262268c1646a0e7c96d4ed14c5d72a30ccb4",
"status": "affected",
"versionType": "git"
},
{
"version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
"lessThan": "4513843d58d8fa1daebd3817205a15309b146342",
"status": "affected",
"versionType": "git"
},
{
"version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
"lessThan": "7cd460bd9e7c6e6c30a33982603f65fb5deab1e4",
"status": "affected",
"versionType": "git"
},
{
"version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
"lessThan": "7215cf8ef54bdc9082dffac4662416d54961e258",
"status": "affected",
"versionType": "git"
},
{
"version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3",
"lessThan": "3147ee567dd9004a49826ddeaf0a4b12865d4409",
"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/f2fs/compress.c",
"fs/f2fs/data.c"
],
"versions": [
{
"version": "5.6",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.6",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.160",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.109",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.14.2",
"lessThanOrEqual": "6.14.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.15",
"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": "6.1.191"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.6",
"versionEndExcluding": "6.6.160"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.6",
"versionEndExcluding": "6.12.109"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.6",
"versionEndExcluding": "6.14.2"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.6",
"versionEndExcluding": "6.15"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/353b262268c1646a0e7c96d4ed14c5d72a30ccb4"
},
{
"url": "https://git.kernel.org/stable/c/4513843d58d8fa1daebd3817205a15309b146342"
},
{
"url": "https://git.kernel.org/stable/c/7cd460bd9e7c6e6c30a33982603f65fb5deab1e4"
},
{
"url": "https://git.kernel.org/stable/c/7215cf8ef54bdc9082dffac4662416d54961e258"
},
{
"url": "https://git.kernel.org/stable/c/3147ee567dd9004a49826ddeaf0a4b12865d4409"
}
],
"title": "f2fs: fix potential deadloop in prepare_compress_overwrite()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
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