by Kastro
Paper/Archive/CVE-2022-49280

CVE-2022-49280

Linux Linux — NFSD: prevent underflow in nfssvc_decode_writeargs()

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 52.7.527 × 2010.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

In the Linux kernel, the following vulnerability has been resolved: NFSD: prevent underflow in nfssvc_decode_writeargs() Smatch complains: fs/nfsd/nfsxdr.c:341 nfssvc_decode_writeargs() warn: no lower bound on 'args->len' Change the type to unsigned to prevent this issue.

Affected

ProductAffectedFixed inSource
Linuxa51b5b737a0be93fae6ea2a18df03ab2359a3f4b – < 614a61e1592051cc42d3c38f899c9f7bdaad8a1d614a61e1592051cc42d3c38f899c9f7bdaad8a1dCNA
Linuxa51b5b737a0be93fae6ea2a18df03ab2359a3f4b – < 2764af8ce0bf03cc43ee4a11897cab96bde6caae2764af8ce0bf03cc43ee4a11897cab96bde6caaeCNA
Linuxa51b5b737a0be93fae6ea2a18df03ab2359a3f4b – < 413d8fefafe531a9442bb623e3fe292a38f88d65413d8fefafe531a9442bb623e3fe292a38f88d65CNA
Linuxa51b5b737a0be93fae6ea2a18df03ab2359a3f4b – < 184416d4b98509fb4c3d8fc3d6dc1437896cc159184416d4b98509fb4c3d8fc3d6dc1437896cc159CNA
Linux5.125.15.33CNA

Scores by source

Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADP5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refgit.kernel.org/stable/c/614a61e1592051cc42d3c38f899c9f7bdaad8a1drefgit.kernel.org/stable/c/2764af8ce0bf03cc43ee4a11897cab96bde6caaerefgit.kernel.org/stable/c/413d8fefafe531a9442bb623e3fe292a38f88d65refgit.kernel.org/stable/c/184416d4b98509fb4c3d8fc3d6dc1437896cc159