CVE-2025-22127
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-22127
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-22127.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-22127
- Downstream
- Published
- 2025-04-16T14:13:10Z
- Modified
- 2025-10-17T23:37:24.401146Z
- Summary
- f2fs: fix potential deadloop in prepare_compress_overwrite()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix potential deadloop in preparecompressoverwrite()
Jan Prusakowski reported a kernel hang issue as below:
When running xfstests on linux-next kernel (6.14.0-rc3, 6.12) I encountered a problem in generic/475 test where fsstress process gets blocked in _f2fswritedatapages() and the test hangs. The options I used are:
MKFSOPTIONS -- -O compression -O extraattr -O projectquota -O quota /dev/vdc MOUNTOPTIONS -- -o acl,userxattr -o discard,compressextension=* /dev/vdc /vdc
INFO: task kworker/u8:0:11 blocked for more than 122 seconds. Not tainted 6.14.0-rc3-xfstests-lockdep #1 "echo 0 > /proc/sys/kernel/hungtasktimeoutsecs" disables this message. task:kworker/u8:0 state:D stack:0 pid:11 tgid:11 ppid:2 taskflags:0x4208160 flags:0x00004000 Workqueue: writeback wbworkfn (flush-253:0) Call Trace: <TASK> _schedule+0x309/0x8e0 schedule+0x3a/0x100 schedulepreemptdisabled+0x15/0x30 _mutexlock+0x59a/0xdb0 _f2fswritedatapages+0x3ac/0x400 dowritepages+0xe8/0x290 _writebacksingleinode+0x5c/0x360 writebacksbinodes+0x22f/0x570 wbwriteback+0xb0/0x410 wbdowriteback+0x47/0x2f0 wbworkfn+0x5a/0x1c0 processonework+0x223/0x5b0 workerthread+0x1d5/0x3c0 kthread+0xfd/0x230 retfromfork+0x31/0x50 retfromforkasm+0x1a/0x30 </TASK>
The root cause is: once generic/475 starts toload error table to dm device, f2fspreparecompress_overwrite() will loop reading compressed cluster pages due to IO error, meanwhile it has held .writepages lock, it can block all other writeback tasks.
Let's fix this issue w/ below changes: - add f2fshandlepageeio() in preparecompressoverwrite() to detect IO error. - detect cperror earler in f2fsreadmulti_pages().
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced4c8ff7095bef64fc47e996a938f7d57f9e077da3Fixed7215cf8ef54bdc9082dffac4662416d54961e258
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced4c8ff7095bef64fc47e996a938f7d57f9e077da3Fixed3147ee567dd9004a49826ddeaf0a4b12865d4409
Affected versions
v5.*
v5.10
v5.10-rc1
v5.10-rc2
v5.10-rc3
v5.10-rc4
v5.10-rc5
v5.10-rc6
v5.10-rc7
v5.11
v5.11-rc1
v5.11-rc2
v5.11-rc3
v5.11-rc4
v5.11-rc5
v5.11-rc6
v5.11-rc7
v5.12
v5.12-rc1
v5.12-rc1-dontuse
v5.12-rc2
v5.12-rc3
v5.12-rc4
v5.12-rc5
v5.12-rc6
v5.12-rc7
v5.12-rc8
v5.13
v5.13-rc1
v5.13-rc2
v5.13-rc3
v5.13-rc4
v5.13-rc5
v5.13-rc6
v5.13-rc7
v5.14
v5.14-rc1
v5.14-rc2
v5.14-rc3
v5.14-rc4
v5.14-rc5
v5.14-rc6
v5.14-rc7
v5.15
v5.15-rc1
v5.15-rc2
v5.15-rc3
v5.15-rc4
v5.15-rc5
v5.15-rc6
v5.15-rc7
v5.16
v5.16-rc1
v5.16-rc2
v5.16-rc3
v5.16-rc4
v5.16-rc5
v5.16-rc6
v5.16-rc7
v5.16-rc8
v5.17
v5.17-rc1
v5.17-rc2
v5.17-rc3
v5.17-rc4
v5.17-rc5
v5.17-rc6
v5.17-rc7
v5.17-rc8
v5.18
v5.18-rc1
v5.18-rc2
v5.18-rc3
v5.18-rc4
v5.18-rc5
v5.18-rc6
v5.18-rc7
v5.19
v5.19-rc1
v5.19-rc2
v5.19-rc3
v5.19-rc4
v5.19-rc5
v5.19-rc6
v5.19-rc7
v5.19-rc8
v5.5
v5.5-rc2
v5.5-rc3
v5.5-rc4
v5.5-rc5
v5.5-rc6
v5.5-rc7
v5.6
v5.6-rc1
v5.6-rc2
v5.6-rc3
v5.6-rc4
v5.6-rc5
v5.6-rc6
v5.6-rc7
v5.7
v5.7-rc1
v5.7-rc2
v5.7-rc3
v5.7-rc4
v5.7-rc5
v5.7-rc6
v5.7-rc7
v5.8
v5.8-rc1
v5.8-rc2
v5.8-rc3
v5.8-rc4
v5.8-rc5
v5.8-rc6
v5.8-rc7
v5.9
v5.9-rc1
v5.9-rc2
v5.9-rc3
v5.9-rc4
v5.9-rc5
v5.9-rc6
v5.9-rc7
v5.9-rc8
v6.*
v6.0
v6.0-rc1
v6.0-rc2
v6.0-rc3
v6.0-rc4
v6.0-rc5
v6.0-rc6
v6.0-rc7
v6.1
v6.1-rc1
v6.1-rc2
v6.1-rc3
v6.1-rc4
v6.1-rc5
v6.1-rc6
v6.1-rc7
v6.1-rc8
v6.10
v6.10-rc1
v6.10-rc2
v6.10-rc3
v6.10-rc4
v6.10-rc5
v6.10-rc6
v6.10-rc7
v6.11
v6.11-rc1
v6.11-rc2
v6.11-rc3
v6.11-rc4
v6.11-rc5
v6.11-rc6
v6.11-rc7
v6.12
v6.12-rc1
v6.12-rc2
v6.12-rc3
v6.12-rc4
v6.12-rc5
v6.12-rc6
v6.12-rc7
v6.13
v6.13-rc1
v6.13-rc2
v6.13-rc3
v6.13-rc4
v6.13-rc5
v6.13-rc6
v6.13-rc7
v6.14
v6.14-rc1
v6.14-rc2
v6.14-rc3
v6.14-rc4
v6.14-rc5
v6.14-rc6
v6.14-rc7
v6.14.1
v6.2
v6.2-rc1
v6.2-rc2
v6.2-rc3
v6.2-rc4
v6.2-rc5
v6.2-rc6
v6.2-rc7
v6.2-rc8
v6.3
v6.3-rc1
v6.3-rc2
v6.3-rc3
v6.3-rc4
v6.3-rc5
v6.3-rc6
v6.3-rc7
v6.4
v6.4-rc1
v6.4-rc2
v6.4-rc3
v6.4-rc4
v6.4-rc5
v6.4-rc6
v6.4-rc7
v6.5
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.6
v6.6-rc1
v6.6-rc2
v6.6-rc3
v6.6-rc4
v6.6-rc5
v6.6-rc6
v6.6-rc7
v6.7
v6.7-rc1
v6.7-rc2
v6.7-rc3
v6.7-rc4
v6.7-rc5
v6.7-rc6
v6.7-rc7
v6.7-rc8
v6.8
v6.8-rc1
v6.8-rc2
v6.8-rc3
v6.8-rc4
v6.8-rc5
v6.8-rc6
v6.8-rc7
v6.9
v6.9-rc1
v6.9-rc2
v6.9-rc3
v6.9-rc4
v6.9-rc5
v6.9-rc6
v6.9-rc7
Database specific
vanir_signatures
[
{
"target": {
"function": "f2fs_read_multi_pages",
"file": "fs/f2fs/data.c"
},
"id": "CVE-2025-22127-011e42b9",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3147ee567dd9004a49826ddeaf0a4b12865d4409",
"deprecated": false,
"digest": {
"function_hash": "97317583362511457047812772367070945842",
"length": 3312.0
},
"signature_type": "Function",
"signature_version": "v1"
},
{
"target": {
"function": "prepare_compress_overwrite",
"file": "fs/f2fs/compress.c"
},
"id": "CVE-2025-22127-1bb12a63",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@7215cf8ef54bdc9082dffac4662416d54961e258",
"deprecated": false,
"digest": {
"function_hash": "210072821659598619832863666654460878250",
"length": 1655.0
},
"signature_type": "Function",
"signature_version": "v1"
},
{
"target": {
"file": "fs/f2fs/compress.c"
},
"id": "CVE-2025-22127-28ea36eb",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@7215cf8ef54bdc9082dffac4662416d54961e258",
"deprecated": false,
"digest": {
"threshold": 0.9,
"line_hashes": [
"65536260179218319198532367600038162918",
"174481961564395526918185556559610423125",
"256005010742619738394727883077922875654",
"205330410729292686021633243947271195274"
]
},
"signature_type": "Line",
"signature_version": "v1"
},
{
"target": {
"function": "prepare_compress_overwrite",
"file": "fs/f2fs/compress.c"
},
"id": "CVE-2025-22127-4ce8c567",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3147ee567dd9004a49826ddeaf0a4b12865d4409",
"deprecated": false,
"digest": {
"function_hash": "210072821659598619832863666654460878250",
"length": 1655.0
},
"signature_type": "Function",
"signature_version": "v1"
},
{
"target": {
"file": "fs/f2fs/compress.c"
},
"id": "CVE-2025-22127-5130abb7",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3147ee567dd9004a49826ddeaf0a4b12865d4409",
"deprecated": false,
"digest": {
"threshold": 0.9,
"line_hashes": [
"65536260179218319198532367600038162918",
"174481961564395526918185556559610423125",
"256005010742619738394727883077922875654",
"205330410729292686021633243947271195274"
]
},
"signature_type": "Line",
"signature_version": "v1"
},
{
"target": {
"function": "f2fs_read_multi_pages",
"file": "fs/f2fs/data.c"
},
"id": "CVE-2025-22127-7637fd13",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@7215cf8ef54bdc9082dffac4662416d54961e258",
"deprecated": false,
"digest": {
"function_hash": "97317583362511457047812772367070945842",
"length": 3312.0
},
"signature_type": "Function",
"signature_version": "v1"
},
{
"target": {
"file": "fs/f2fs/data.c"
},
"id": "CVE-2025-22127-c55dfeaf",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3147ee567dd9004a49826ddeaf0a4b12865d4409",
"deprecated": false,
"digest": {
"threshold": 0.9,
"line_hashes": [
"312789573912672734746319990194076237902",
"142586329831572547450335241020454182005",
"56602819442846905587656215093767363133",
"300600884981685355135650859948390325158",
"28128705644417286725946971518833909763",
"151718627205445470644187419235630765036",
"135195752965066442856722273949641577182",
"126516929137618747025647075404069922343",
"186284333954980030001196712816611607050",
"61187558835373792125875513380602490212"
]
},
"signature_type": "Line",
"signature_version": "v1"
},
{
"target": {
"file": "fs/f2fs/data.c"
},
"id": "CVE-2025-22127-df18fe3c",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@7215cf8ef54bdc9082dffac4662416d54961e258",
"deprecated": false,
"digest": {
"threshold": 0.9,
"line_hashes": [
"312789573912672734746319990194076237902",
"142586329831572547450335241020454182005",
"56602819442846905587656215093767363133",
"300600884981685355135650859948390325158",
"28128705644417286725946971518833909763",
"151718627205445470644187419235630765036",
"135195752965066442856722273949641577182",
"126516929137618747025647075404069922343",
"186284333954980030001196712816611607050",
"61187558835373792125875513380602490212"
]
},
"signature_type": "Line",
"signature_version": "v1"
}
]