Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2022-49639: cipso: Fix data-races around sysctl.

Noroxi assessment

Priority: Monitor (action score 18/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: Linux Linux 07b0caf8aeb9b82e6ecc6c292a3e47c7fcdb1148, 0e41a0f73ccb9be112a80bde3804a771633caaef, 2764f82bbc158d106693ae3ced3675cf4b963b35.

Low priority for now. Upgrade to Linux Linux 07b0caf8aeb9b82e6ecc6c292a3e47c7fcdb1148, 0e41a0f73ccb9be112a80bde3804a771633caaef, 2764f82bbc158d106693ae3ced3675cf4b963b35 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: cipso: Fix data-races around sysctl. While reading cipso sysctl variables, they can be changed concurrently. So, we need to add READ_ONCE() to avoid data-races.

MediumCVSS 4.7 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 7th percentile

Report tools

JSON

Action score

18

Monitor

Low priority for now.

CVSS
18 / 40 · 4.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-49639

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel2.6.19 and later · before 4.9.324
  • linux linux kernel4.10 and later · before 4.14.289
  • linux linux kernel4.15 and later · before 4.19.253
  • linux linux kernel4.20 and later · before 5.4.207
  • linux linux kernel5.5 and later · before 5.10.132
  • linux linux kernel5.11 and later · before 5.15.56
  • linux linux kernel5.16 and later · before 5.18.13
  • linux linux kernel5.19

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.19affected
    • 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and later · before 2764f82bbc158d106693ae3ced3675cf4b963b35affected · git
    • 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and later · before c321e99d2725d11f7e6a4ebd9ce752259f0bae81affected · git
    • 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and later · before ca26ca5e2f3eeb3e6fe699cd6effa3b4b2aa8698affected · git
    • 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and later · before 0e41a0f73ccb9be112a80bde3804a771633caaefaffected · git
    • 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and later · before fe2a35fa2c4f9c8ce5ef970eb927031387f9446aaffected · git
    • 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and later · before 07b0caf8aeb9b82e6ecc6c292a3e47c7fcdb1148affected · git
    • 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and later · before 59e26906b89cc35bb54476498772b45cbc32323faffected · git
    • 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and later · before dd44f04b9214adb68ef5684ae87a81ba03632250affected · git
    • before 2.6.19not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.18.14-15.18.14-1
Red Hat:enterprise_linux:8::baseosbpftoolbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseosbpftool-debuginfobefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernelbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-abi-stablelistsbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-corebefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debugbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debug-corebefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debug-debuginfobefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debug-develbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debug-modulesbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debug-modules-extrabefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debuginfobefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-aarch64before 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-ppc64lebefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-s390xbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-x86_64before 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-develbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-docbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-modulesbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-modules-extrabefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-toolsbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-tools-debuginfobefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-tools-libsbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9

+11

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-49637Feb 26, 2025 · ipv4: Fix a data-race around sysctl_fib_sync_mem.
    18Monitor
  • ← EarlierCVE-2022-49638Feb 26, 2025 · icmp: Fix data-races around sysctl.
    18Monitor
  • Later →CVE-2022-49640Feb 26, 2025 · sysctl: Fix data races in proc_douintvec_minmax().
    18Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux07b0caf8aeb9b82e6ecc6c292a3e47c7fcdb1148Vendor (CNA)
Linux Linux0e41a0f73ccb9be112a80bde3804a771633caaefVendor (CNA)
Linux Linux2764f82bbc158d106693ae3ced3675cf4b963b35Vendor (CNA)
Linux Linux59e26906b89cc35bb54476498772b45cbc32323fVendor (CNA)
Linux Linuxc321e99d2725d11f7e6a4ebd9ce752259f0bae81Vendor (CNA)
Linux Linuxca26ca5e2f3eeb3e6fe699cd6effa3b4b2aa8698Vendor (CNA)
Linux Linuxdd44f04b9214adb68ef5684ae87a81ba03632250Vendor (CNA)
Linux Linuxfe2a35fa2c4f9c8ce5ef970eb927031387f9446aVendor (CNA)
debian:linux5.18.14-1 · Debian:12Package registry (OSV)
red hat:bpftool0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:bpftool-debuginfo0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-abi-stablelists0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-core0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-core0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-debuginfo0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-devel0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-modules0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-modules-extra0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debuginfo0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

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

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records