01 Record

CVE-2021-47238

net: ipv4: fix memory leak in ip_mc_add1_src

MediumPUBLISHEDCNA: Linux

CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

View raw JSON

02 Description

net: ipv4: fix memory leak in ip_mc_add1_src

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

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 14.7% 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 14:19Z2 YR AGO

Last updated

2026-05-23 15:19Z3 MO AGO

Reserved

2024-04-10

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.2

Document digest

82b48ced288388e08717c81ad92682de2cae038e2c0d23d96b1c7952d70767da

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux24803f38a5c0b6c57ed800b47e695f9ce474bc3a to < 0dc13e75507faa17ac9f7562b4ef7bf8fcd78422, 24803f38a5c0b6c57ed800b47e695f9ce474bc3a to < 6cff57eea3347f79f1867cc53e1093b6614138d8, 24803f38a5c0b6c57ed800b47e695f9ce474bc3a to < 1e28018b5c83d5073f74a6fb72eabe8370b2f501, 24803f38a5c0b6c57ed800b47e695f9ce474bc3a to < 3dd2aeac2e9624cff9fa634710837e4f2e352758, 24803f38a5c0b6c57ed800b47e695f9ce474bc3a to < ac31cc837cafb57a271babad8ccffbf733caa076, 24803f38a5c0b6c57ed800b47e695f9ce474bc3a to < 77de6ee73f54a9a89c0afa0bf4c53b239aa9953a, 24803f38a5c0b6c57ed800b47e695f9ce474bc3a to < d8e2973029b8b2ce477b564824431f3385c77083, bd1b664a19403ede448d29c87b2f23796bc7a577, b38c6e0bd5b5e439ecebdc0df599d573c2f610f8, 3.2.87 to < 3.3, 3.16.42 to < 3.17, 4.9—

linuxlinux_kernel24803f38a5c0 to < 0dc13e75507f, 24803f38a5c0 to < 6cff57eea334, 24803f38a5c0 to < 1e28018b5c83, 24803f38a5c0 to < 3dd2aeac2e96, 24803f38a5c0 to < ac31cc837caf, 24803f38a5c0 to < 77de6ee73f54, 24803f38a5c0 to < d8e2973029b8, 4.9—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/0dc13e75507faa17ac9f7562b4ef7bf8fcd78422
git.kernel.orghttps://git.kernel.org/stable/c/6cff57eea3347f79f1867cc53e1093b6614138d8
git.kernel.orghttps://git.kernel.org/stable/c/1e28018b5c83d5073f74a6fb72eabe8370b2f501
git.kernel.orghttps://git.kernel.org/stable/c/3dd2aeac2e9624cff9fa634710837e4f2e352758
git.kernel.orghttps://git.kernel.org/stable/c/ac31cc837cafb57a271babad8ccffbf733caa076
git.kernel.orghttps://git.kernel.org/stable/c/77de6ee73f54a9a89c0afa0bf4c53b239aa9953a
git.kernel.orghttps://git.kernel.org/stable/c/d8e2973029b8b2ce477b564824431f3385c77083

01 Record index

CVE-2021-47238

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-47238

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References