01 Record

CVE-2021-47294

netrom: Decrease sock refcount when sock timers expire

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

netrom: Decrease sock refcount when sock timers expire

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

0.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 20.0% 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

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

2026-05-23 15:19Z3 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-672Operation on a Resource after Expiration or ReleaseClass
CWE-401Missing Release of Memory after Effective LifetimeVariant

Data version

5.2

Document digest

bb4c2fea8229b9676123823e0678461e22bf23802412fe7500631f8668054b1e

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxce29e8a259de767f7210d346ad2b031cb8ab2732 to < 853262355518cd1247515b74e83fabf038aa6c29, baa9e32336bf6d0d74a7c3486d2a27feaf57cd5f to < a01634bf91f2b6c42583770eb6815fb6d1e251cf, 0adf571fa34b27bd0b97b408cc0f0dc54b72f0eb to < 48866fd5c361ea417ed24b43fc2a7dc2f5b060ef, 2c6b572458a9127e8070df13fa7f115c29ab1d92 to < 9619cc7d97c3aa8ed3cfd2b8678b74fb6d6c7950, 63346650c1a94a92be61a57416ac88c0a47c4327 to < 25df44e90ff5959b5c24ad361b648504a7e39ef3, 63346650c1a94a92be61a57416ac88c0a47c4327 to < 6811744bd0efb9e472cb15d066cdb460beb8cb8a, 63346650c1a94a92be61a57416ac88c0a47c4327 to < bc1660206c3723c37ed4d622ad81781f1e987250, 63346650c1a94a92be61a57416ac88c0a47c4327 to < 517a16b1a88bdb6b530f48d5d153478b2552d9a8, f1d9a1f2ef6ff17293d21d5e6b80e04bea0cf508, 519e8a22a454b1f1baa3a151b184fe51bc18e178, 4.4.173 to < 4.4.277, 4.9.155 to < 4.9.277, 4.14.98 to < 4.14.241, 4.19.20 to < 4.19.199, 3.18.134 to < 3.19, 4.20.7 to < 4.21, 5.0—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/853262355518cd1247515b74e83fabf038aa6c29
git.kernel.orghttps://git.kernel.org/stable/c/a01634bf91f2b6c42583770eb6815fb6d1e251cf
git.kernel.orghttps://git.kernel.org/stable/c/48866fd5c361ea417ed24b43fc2a7dc2f5b060ef
git.kernel.orghttps://git.kernel.org/stable/c/9619cc7d97c3aa8ed3cfd2b8678b74fb6d6c7950
git.kernel.orghttps://git.kernel.org/stable/c/25df44e90ff5959b5c24ad361b648504a7e39ef3
git.kernel.orghttps://git.kernel.org/stable/c/6811744bd0efb9e472cb15d066cdb460beb8cb8a
git.kernel.orghttps://git.kernel.org/stable/c/bc1660206c3723c37ed4d622ad81781f1e987250
git.kernel.orghttps://git.kernel.org/stable/c/517a16b1a88bdb6b530f48d5d153478b2552d9a8

01 Record index

CVE-2021-47294

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-47294

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References