tcp: Fix data-races around sysctl_tcp_min_snd_mss.
Published Feb 26, 2025
4.7
MEDIUMCVSS 3.1
EPSS 0.18%
Description
While reading sysctl_tcp_min_snd_mss, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.
Affected products
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- Version StatusaffectedConstraints-
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints-
- Version StatusaffectedConstraints-
- Version StatusaffectedConstraints-
- Version StatusaffectedConstraints-
- Version StatusaffectedConstraints-
- Version
-
- Version 3.16.69StatusaffectedConstraints<3.17
- Version 4.14.127StatusaffectedConstraints<4.15
- Version 4.19.52StatusaffectedConstraints<4.20
- Version 4.4.182StatusaffectedConstraints<4.5
- Version 4.9.182StatusaffectedConstraints<4.10
- Version 5.1.11StatusaffectedConstraints<5.2
- Version
-
- Version 5.2StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<5.2
- Version 5.10.134StatusunaffectedConstraints<=5.10.*
- Version 5.15.58StatusunaffectedConstraints<=5.15.*
- Version 5.18.15StatusunaffectedConstraints<=5.18.*
- Version 5.19StatusunaffectedConstraints<=*
- Version 5.4.208StatusunaffectedConstraints<=5.4.*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
| ||||||||||||||||||||||||||||||||||||
| Linux | Linux | unaffected |
| ||||||||||||||||||||||||||||||||||||
| Linux | Linux | affected |
|
- ≥ 3.16.69 · < 3.17
- ≥ 4.4.182 · < 4.5
- ≥ 4.9.182 · < 4.10
- ≥ 4.14.127 · < 4.15
- ≥ 4.19.52 · < 4.20
- ≥ 5.1.11 · < 5.4.208
- ≥ 5.5 · < 5.10.134
- ≥ 5.11 · < 5.15.58
- ≥ 5.16 · < 5.18.15
- 5.19
- 5.19
- 5.19
- 5.19
- 5.19
- 5.19
- 5.19
No data.
Red Hat Enterprise Linux 9
kernel-0:5.14.0-284.11.1.el9_2
Fixed · RHSA-2023:2458
Red Hat Enterprise Linux 9
kernel-0:5.14.0-284.11.1.el9_2
Fixed · RHSA-2023:2458
Red Hat Enterprise Linux 10
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel-rt
Out of support scope
Red Hat Enterprise Linux 8
kernel
Out of support scope
Red Hat Enterprise Linux 8
kernel-rt
Out of support scope
Red Hat Enterprise Linux 9
kernel-rt
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-284.11.1.el9_2 | Fixed | RHSA-2023:2458 |
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-284.11.1.el9_2 | Fixed | RHSA-2023:2458 |
| Red Hat Enterprise Linux 10 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Out of support scope | n/a |
| Red Hat Enterprise Linux 8 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Out of support scope | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Oct 1, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2025–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (4 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.18% (0.00185) | 7.37th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.18% (0.00176) | 7.31th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.01% (0.00014) | 1.39th | v4 (v2025.03.14) |
| Feb 27, 2025 | 0.04% (0.00045) | 18.25th | v3 (v2023.03.01) |
References (10)
- https://access.redhat.com/security/cve/CVE-2022-49596 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2348325 Issue Tracking
- https://git.kernel.org/stable/c/0d8a39feb58910a7f7746b1770ee5578cc551fe6 Patch
- https://git.kernel.org/stable/c/0fc9357282df055e30990b29f4b7afa53ab42cdb Patch
- https://git.kernel.org/stable/c/78eb166cdefcc3221c8c7c1e2d514e91a2eb5014 Patch
- https://git.kernel.org/stable/c/97992e8feff33b3ae154a113ec398546bbacda80 Patch
- https://git.kernel.org/stable/c/fdb96b69f5909ffcdd6f1e0902219fc6d7689ff7 Patch
- https://lore.kernel.org/linux-cve-announce/2025022611-CVE-2022-49596-ebcf@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2022-49596
- https://www.cve.org/CVERecord?id=CVE-2022-49596
Change history (0)
No recorded changes yet.