01 Record

CVE-2021-47179

NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()

HighPUBLISHEDCNA: Linux

CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

View raw JSON

02 Description

NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()

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

0.67% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 49.4% 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

2024-03-25 09:16Z2 YR AGO

Last updated

2026-08-05 08:46Z1 MO AGO

Reserved

2024-03-25

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

6fa1de5fdf2be5128ec7a6615a41173d189d448ab614974f12409aa663a7aab4

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux80e34f4957ec3010c85f9bb0b568a8d46acdf535 to < 4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42, 7b7b9774643220e53eef58c15bb29bd4182fe053 to < 42637ca25c7d7b5a92804a679af5192e8c1a9f48, 9ffa7967f9379a0a1b924e9ffeda709d72237da7 to < 39785761feadf261bc5101372b0b0bbaf6a94494, 6be0e4b59314e4a836495f6ffdc5d2c5b079deeb to < aba3c7795f51717ae316f3566442dee7cc3eeccb, 2fafe7d5047f98791afd9a1d90d2afb70debc590 to < f9890652185b72b8de9ebeb4406037640b6e1b53, 7e65ea887d0c0997f3053acd91a027af45e71c5b to < b090d110e66636bca473fd8b98d5c97b555a965a, de144ff4234f935bd2150108019b5d87a90a8a96 to < a421d218603ffa822a0b8045055c03eae394a7eb, 96260bde1ea8ae31a5402fe506abbb8951d5a42c, 5.11.20 to < 5.12, 4.9.269 to < 4.9.271, 4.14.233 to < 4.14.235, 4.19.191 to < 4.19.193, 5.4.118 to < 5.4.124, 5.10.36 to < 5.10.42, 5.12.3 to < 5.12.9—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42
git.kernel.orghttps://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48
git.kernel.orghttps://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494
git.kernel.orghttps://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb
git.kernel.orghttps://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53
git.kernel.orghttps://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a
git.kernel.orghttps://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb

01 Record index

CVE-2021-47179

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-47179

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References