CVE-2024-42316
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-42316
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-42316.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-42316
- Downstream
- Related
- Published
- 2024-08-17T09:09:24Z
- Modified
- 2025-10-14T21:14:33.178378Z
- Summary
- mm/mglru: fix div-by-zero in vmpressure_calc_level()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mm/mglru: fix div-by-zero in vmpressurecalclevel()
evictfolios() uses a second pass to reclaim folios that have gone through page writeback and become clean before it finishes the first pass, since foliorotate_reclaimable() cannot handle those folios due to the isolation.
The second pass tries to avoid potential double counting by deducting scancontrol->nrscanned. However, this can result in underflow of nrscanned, under a condition where shrinkfoliolist() does not increment nrscanned, i.e., when folio_trylock() fails.
The underflow can cause the divisor, i.e., scale=scanned+reclaimed in vmpressurecalclevel(), to become zero, resulting in the following crash:
[exception RIP: vmpressureworkfn+101] processonework at ffffffffa3313f2b
Since scancontrol->nrscanned has no established semantics, the potential double counting has minimal risks. Therefore, fix the problem by not deducting scancontrol->nrscanned in evict_folios().
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/8b671fe1a879923ecfb72dda6caf01460dd885ef
- https://git.kernel.org/stable/c/8de7bf77f21068a5f602bb1e59adbc5ab533509d
- https://git.kernel.org/stable/c/a39e38be632f0e1c908d70d1c9cd071c03faf895
- https://git.kernel.org/stable/c/d6510f234c7d117790397f9bb150816b0a954a04
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
-
Introduced359a5e1416caaf9ce28396a65ed3e386cc5de663Fixed8de7bf77f21068a5f602bb1e59adbc5ab533509d
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced359a5e1416caaf9ce28396a65ed3e386cc5de663Fixedd6510f234c7d117790397f9bb150816b0a954a04
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced359a5e1416caaf9ce28396a65ed3e386cc5de663Fixeda39e38be632f0e1c908d70d1c9cd071c03faf895
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced359a5e1416caaf9ce28396a65ed3e386cc5de663Fixed8b671fe1a879923ecfb72dda6caf01460dd885ef
Affected versions
v6.*
v6.1
v6.1-rc5
v6.1-rc6
v6.1-rc7
v6.1-rc8
v6.1.1
v6.1.10
v6.1.100
v6.1.101
v6.1.102
v6.1.11
v6.1.12
v6.1.13
v6.1.14
v6.1.15
v6.1.16
v6.1.17
v6.1.18
v6.1.19
v6.1.2
v6.1.20
v6.1.21
v6.1.22
v6.1.23
v6.1.24
v6.1.25
v6.1.26
v6.1.27
v6.1.28
v6.1.29
v6.1.3
v6.1.30
v6.1.31
v6.1.32
v6.1.33
v6.1.34
v6.1.35
v6.1.36
v6.1.37
v6.1.38
v6.1.39
v6.1.4
v6.1.40
v6.1.41
v6.1.42
v6.1.43
v6.1.44
v6.1.45
v6.1.46
v6.1.47
v6.1.48
v6.1.49
v6.1.5
v6.1.50
v6.1.51
v6.1.52
v6.1.53
v6.1.54
v6.1.55
v6.1.56
v6.1.57
v6.1.58
v6.1.59
v6.1.6
v6.1.60
v6.1.61
v6.1.62
v6.1.63
v6.1.64
v6.1.65
v6.1.66
v6.1.67
v6.1.68
v6.1.69
v6.1.7
v6.1.70
v6.1.71
v6.1.72
v6.1.73
v6.1.74
v6.1.75
v6.1.76
v6.1.77
v6.1.78
v6.1.79
v6.1.8
v6.1.80
v6.1.81
v6.1.82
v6.1.83
v6.1.84
v6.1.85
v6.1.86
v6.1.87
v6.1.88
v6.1.89
v6.1.9
v6.1.90
v6.1.91
v6.1.92
v6.1.93
v6.1.94
v6.1.95
v6.1.96
v6.1.97
v6.1.98
v6.1.99
v6.10
v6.10-rc1
v6.10-rc2
v6.10-rc3
v6.10-rc4
v6.10-rc5
v6.10-rc6
v6.10-rc7
v6.10.1
v6.10.2
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
v6.6.1
v6.6.10
v6.6.11
v6.6.12
v6.6.13
v6.6.14
v6.6.15
v6.6.16
v6.6.17
v6.6.18
v6.6.19
v6.6.2
v6.6.20
v6.6.21
v6.6.22
v6.6.23
v6.6.24
v6.6.25
v6.6.26
v6.6.27
v6.6.28
v6.6.29
v6.6.3
v6.6.30
v6.6.31
v6.6.32
v6.6.33
v6.6.34
v6.6.35
v6.6.36
v6.6.37
v6.6.38
v6.6.39
v6.6.4
v6.6.40
v6.6.41
v6.6.42
v6.6.43
v6.6.5
v6.6.6
v6.6.7
v6.6.8
v6.6.9
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": [
{
"id": "CVE-2024-42316-4e83ec55",
"target": {
"function": "evict_folios",
"file": "mm/vmscan.c"
},
"digest": {
"length": 1865.0,
"function_hash": "7843284105297096139323252950684273711"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8b671fe1a879923ecfb72dda6caf01460dd885ef",
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2024-42316-512b0d0e",
"target": {
"file": "mm/vmscan.c"
},
"digest": {
"line_hashes": [
"322910299138612881846350341226183027094",
"65885444317123748534122132554655635058",
"203562608094015608891562759046165471096",
"21301563934266594227196568554554600957"
],
"threshold": 0.9
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8de7bf77f21068a5f602bb1e59adbc5ab533509d",
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2024-42316-797065e8",
"target": {
"function": "evict_folios",
"file": "mm/vmscan.c"
},
"digest": {
"length": 1882.0,
"function_hash": "31249362742101069982573210584319556691"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8de7bf77f21068a5f602bb1e59adbc5ab533509d",
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2024-42316-946c3d3b",
"target": {
"file": "mm/vmscan.c"
},
"digest": {
"line_hashes": [
"322910299138612881846350341226183027094",
"65885444317123748534122132554655635058",
"203562608094015608891562759046165471096",
"21301563934266594227196568554554600957"
],
"threshold": 0.9
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8b671fe1a879923ecfb72dda6caf01460dd885ef",
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2024-42316-996f8da1",
"target": {
"function": "evict_folios",
"file": "mm/vmscan.c"
},
"digest": {
"length": 1796.0,
"function_hash": "17037460669947121803281386367153825938"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d6510f234c7d117790397f9bb150816b0a954a04",
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2024-42316-a95a236f",
"target": {
"file": "mm/vmscan.c"
},
"digest": {
"line_hashes": [
"322910299138612881846350341226183027094",
"65885444317123748534122132554655635058",
"203562608094015608891562759046165471096",
"21301563934266594227196568554554600957"
],
"threshold": 0.9
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a39e38be632f0e1c908d70d1c9cd071c03faf895",
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2024-42316-c4cc993c",
"target": {
"file": "mm/vmscan.c"
},
"digest": {
"line_hashes": [
"322910299138612881846350341226183027094",
"65885444317123748534122132554655635058",
"203562608094015608891562759046165471096",
"21301563934266594227196568554554600957"
],
"threshold": 0.9
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d6510f234c7d117790397f9bb150816b0a954a04",
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2024-42316-d18949af",
"target": {
"function": "evict_folios",
"file": "mm/vmscan.c"
},
"digest": {
"length": 1865.0,
"function_hash": "7843284105297096139323252950684273711"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a39e38be632f0e1c908d70d1c9cd071c03faf895",
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
]
}