01 Record

CVE-2022-49280

NFSD: prevent underflow in nfssvc_decode_writeargs()

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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02 Description

NFSD: prevent underflow in nfssvc_decode_writeargs()

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.68% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 52.0% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-02-26 01:56Z1 YR AGO

Last updated

2026-08-05 08:54Z2 MO AGO

Reserved

2025-02-26

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-191Integer Underflow (Wrap or Wraparound)Base

Data version

5.2

Document digest

28670d7f3e59cbd011ee209009bf5ea582ccdde8bf5e11722a80721c731b5f02

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxa51b5b737a0be93fae6ea2a18df03ab2359a3f4b to < 614a61e1592051cc42d3c38f899c9f7bdaad8a1d, a51b5b737a0be93fae6ea2a18df03ab2359a3f4b to < 2764af8ce0bf03cc43ee4a11897cab96bde6caae, a51b5b737a0be93fae6ea2a18df03ab2359a3f4b to < 413d8fefafe531a9442bb623e3fe292a38f88d65, a51b5b737a0be93fae6ea2a18df03ab2359a3f4b to < 184416d4b98509fb4c3d8fc3d6dc1437896cc159, 5.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/614a61e1592051cc42d3c38f899c9f7bdaad8a1d
git.kernel.orghttps://git.kernel.org/stable/c/2764af8ce0bf03cc43ee4a11897cab96bde6caae
git.kernel.orghttps://git.kernel.org/stable/c/413d8fefafe531a9442bb623e3fe292a38f88d65
git.kernel.orghttps://git.kernel.org/stable/c/184416d4b98509fb4c3d8fc3d6dc1437896cc159

07 Fixed in

Debian 12

linux
Fixed in 5.17.3-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 5.17.3-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 5.17.3-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.