01 Record

CVE-2021-47353

udf: Fix NULL pointer dereference in udf_symlink function

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

udf: Fix NULL pointer dereference in udf_symlink function

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

0.31% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 23.5% 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

Analyzed. NVD last modified this record on 2026-06-17.

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

2024-05-21 14:35Z2 YR AGO

Last updated

2026-05-11 13:53Z3 MO AGO

Reserved

2024-05-21

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

d523efb26c3c5db697c004a478f12c8d3e7c9255492074eb9d1ccd7633f63c38

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 2f3d9ddd32a28803baa547e6274983b67d5e287c, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 371566f63cbd0bb6fbb25b8fe9d5798268d35af9, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < baea588a42d675e35daeaddd10fbc9700550bc4d, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 3638705ecd5ad2785e996f820121c0ad15ce64b5, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 80d505aee6398cf8beb72475c7edcf1733c1c68b, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 21bf1414580c36ffc8d8de043beb3508cf812238, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < aebed6b19e51a34003d998da5ebb1dfdd2cb1d02, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 5150877e4d99f85057a458daac7cd7c01005d5c6, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43, 2.6.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/2f3d9ddd32a28803baa547e6274983b67d5e287c
git.kernel.orghttps://git.kernel.org/stable/c/371566f63cbd0bb6fbb25b8fe9d5798268d35af9
git.kernel.orghttps://git.kernel.org/stable/c/baea588a42d675e35daeaddd10fbc9700550bc4d
git.kernel.orghttps://git.kernel.org/stable/c/3638705ecd5ad2785e996f820121c0ad15ce64b5
git.kernel.orghttps://git.kernel.org/stable/c/80d505aee6398cf8beb72475c7edcf1733c1c68b
git.kernel.orghttps://git.kernel.org/stable/c/21bf1414580c36ffc8d8de043beb3508cf812238
git.kernel.orghttps://git.kernel.org/stable/c/aebed6b19e51a34003d998da5ebb1dfdd2cb1d02
git.kernel.orghttps://git.kernel.org/stable/c/5150877e4d99f85057a458daac7cd7c01005d5c6
git.kernel.orghttps://git.kernel.org/stable/c/fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43

01 Record index

CVE-2021-47353

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-47353

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References