01 Record

CVE-2022-49630

tcp: Fix a data-race around sysctl_tcp_ecn_fallback.

MediumPUBLISHEDCNA: Linux

CNA base score4.7 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

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02 Description

tcp: Fix a data-race around sysctl_tcp_ecn_fallback.

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

0.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 7.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. 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

2025-02-26 02:23Z1 YR AGO

Last updated

2026-05-11 19:03Z5 MO AGO

Reserved

2025-02-26

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 4.7)

CNA CVSS vector

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

Weaknesses

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class

Data version

5.2

Document digest

254006b4238e43ca3b82f3031c0f08c86af846d900f2c3ecde92ea1df4f54c62

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux492135557dc090a1abb2cfbe1a412757e3ed68ab to < 8bcf7339f2cf70ea4461df6ea045d1aadfabfa11, 492135557dc090a1abb2cfbe1a412757e3ed68ab to < 1ec3d6c2626ee6e1b36b7bd006873a271406ba61, 492135557dc090a1abb2cfbe1a412757e3ed68ab to < 12b8d9ca7e678abc48195294494f1815b555d658, 4.2—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/8bcf7339f2cf70ea4461df6ea045d1aadfabfa11
git.kernel.orghttps://git.kernel.org/stable/c/1ec3d6c2626ee6e1b36b7bd006873a271406ba61
git.kernel.orghttps://git.kernel.org/stable/c/12b8d9ca7e678abc48195294494f1815b555d658

07 Fixed in

Debian 12

linux
Fixed in 5.18.14-1

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

Debian 13

linux
Fixed in 5.18.14-1

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

Debian 14

linux
Fixed in 5.18.14-1

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