CVE-2022-49598

tcp: Fix data-races around sysctl_tcp_mtu_probing.

MEDIUM
4.7
CVSS Score
Published: February 26, 2025 at 02:23 AM UTC
Updated: June 17, 2026 at 05:18 AM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM4.7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctl_tcp_mtu_probing. While reading sysctl_tcp_mtu_probing, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2.6.17 ≤ v < 4.19.2542.6.17 ≤ v < 5.10.1342.6.17 ≤ v < 5.15.582.6.17 ≤ v < 5.18.152.6.17 ≤ v < 5.192.6.17 ≤ v < 5.4.2084.20 ≤ v < 5.4.2085.11 ≤ v < 5.15.585.16 ≤ v < 5.18.155.5 ≤ v < 5.10.1345.19 rc15.19 rc25.19 rc35.19 rc45.19 rc55.19 rc65.19 rc75d424d5a674f782d0659a3b66d951f412901faee
Vendor states this is fixed in 77a04845f0d28a3561494a5f3121488470a968a4 (fixed)
Vendor states this is fixed in 7e8fc428a7f680f1c4994a40e52d7f95a9a93038 (fixed)
Vendor states this is fixed in aabe9438fdfe004e021d5a206227ec105dbe2416 (fixed)
Vendor states this is fixed in b0920ca09d9ce19980c8391b9002455baa9c1417 (fixed)
Vendor states this is fixed in f47d00e077e7d61baf69e46dde3210c886360207 (fixed)
Vendor states this is fixed in f966773e13cdd3f12baa90071b7b660f6c633ccb (fixed)
Vendor states this is fixed in 2.6.17 (unaffected)
Vendor states this is fixed in 4.19.254 (unaffected)
Vendor states this is fixed in 5.10.134 (unaffected)
Vendor states this is fixed in 5.15.58 (unaffected)
Vendor states this is fixed in 5.18.15 (unaffected)
Vendor states this is fixed in 5.19 (unaffected)
Vendor states this is fixed in 5.4.208 (unaffected)

References (6)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/77a04845f0d28a3561494a5f3121488470a968a4
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7e8fc428a7f680f1c4994a40e52d7f95a9a93038
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/aabe9438fdfe004e021d5a206227ec105dbe2416
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b0920ca09d9ce19980c8391b9002455baa9c1417
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f47d00e077e7d61baf69e46dde3210c886360207
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f966773e13cdd3f12baa90071b7b660f6c633ccb

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.7MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-362

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card