Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2024-36903: ipv6: Fix potential uninit-value access in __ip6_make_skb()

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.24% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 2367bf254f3a27ecc6e229afd7a8b0a1395f7be3, 4.15, 4.20.

Low priority for now. Upgrade to Linux Linux 2367bf254f3a27ecc6e229afd7a8b0a1395f7be3, 4.15, 4.20 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: ipv6: Fix potential uninit-value access in __ip6_make_skb() As it was done in commit fc1092f51567 ("ipv4: Fix uninit-value access in __ip_make_skb()") for IPv4, check FLOWI_FLAG_KNOWN_NH on fl6->flowi6_flags instead of testing HDRINCL on the socket to avoid a race condition which causes uninit-value access.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 30, 2024
Updated
Nov 10, 2026
EPSS
0.2% · 15th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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-2024-36903

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 kernel4.14.313 and later · before 4.15
  • linux linux kernel4.19.281 and later · before 4.20
  • linux linux kernel5.4.241 and later · before 5.5
  • linux linux kernel5.10.178 and later · before 5.11
  • linux linux kernel5.15.107 and later · before 5.16
  • linux linux kernel6.1.24 and later · before 6.2
  • linux linux kernel6.2.11 and later · before 6.6.31
  • linux linux kernel6.7 and later · before 6.8.10
  • linux linux kernel6.9

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

    • 165370522cc48127da564a08584a7391e6341908, f394f690a30a5ec0413c62777a058eaf3d6e10d5, 0cf600ca1bdf1d52df977516ee6cee0cadb1f6b1, 02ed5700f40445af02d1c97db25ffc2d04971d9f, 6.3affected
    • 605b056d63302ae84eb136e88d4df49124bd5e0d and later · before 59d74c843ebf46264c7903726cf6f2673a93b07aaffected · git
    • d65ff2fe877c471aa6e79efa7bd8ff66e147c317 and later · before 40e5444a3ac315b60e94d82226b73cd82145d09eaffected · git
    • 2c9cefc142c1dc2759e19a92d3b2b3715e985beb and later · before a05c1ede50e9656f0752e523c7b54f3a3489e9a8affected · git
    • ea30388baebcce37fd594d425a65037ca35e59e8 and later · before 68c8ba16ab712eb709c6bab80ff151079d11d97aaffected · git
    • ea30388baebcce37fd594d425a65037ca35e59e8 and later · before 2367bf254f3a27ecc6e229afd7a8b0a1395f7be3affected · git
    • ea30388baebcce37fd594d425a65037ca35e59e8 and later · before 4e13d3a9c25b7080f8a619f961e943fe08c2672caffected · git
    • 5.10.178 and later · before 5.10.248affected · semver
    • 5.15.107 and later · before 5.15.198affected · semver
    • 6.1.24 and later · before 6.1.140affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:11linuxbefore 5.10.249-15.10.249-1
Debian:11linux-6.1before 6.1.140-1~deb11u16.1.140-1~deb11u1
Debian:12linuxbefore 6.1.140-16.1.140-1
Debian:13linuxbefore 6.8.11-16.8.11-1

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-2024-36899May 30, 2024 · gpiolib: cdev: Fix use after free in lineinfo_changed_notify
    28Monitor
  • ← EarlierCVE-2024-36902May 30, 2024 · ipv6: fib6_rules: avoid possible NULL dereference in fib6_rule_action()
    22Monitor
  • Later →CVE-2024-36904May 30, 2024 · tcp: Use refcount_inc_not_zero() in tcp_twsk_unique().
    31Monitor

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 Linux2367bf254f3a27ecc6e229afd7a8b0a1395f7be3Vendor (CNA)
Linux Linux4.15Vendor (CNA)
Linux Linux4.20Vendor (CNA)
Linux Linux40e5444a3ac315b60e94d82226b73cd82145d09eVendor (CNA)
Linux Linux4e13d3a9c25b7080f8a619f961e943fe08c2672cVendor (CNA)
Linux Linux5.10.248Vendor (CNA)
Linux Linux5.15.198Vendor (CNA)
Linux Linux5.5Vendor (CNA)
Linux Linux59d74c843ebf46264c7903726cf6f2673a93b07aVendor (CNA)
Linux Linux6.1.140Vendor (CNA)
Linux Linux6.3Vendor (CNA)
Linux Linux68c8ba16ab712eb709c6bab80ff151079d11d97aVendor (CNA)
Linux Linuxa05c1ede50e9656f0752e523c7b54f3a3489e9a8Vendor (CNA)
debian:linux6.1.140-1 · Debian:12Package registry (OSV)
debian:linux-6.16.1.140-1~deb11u1 · Debian:11Package 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.

  • CVE-2024-50302173 days apartHID: core: zero-initialize the report bufferKEV
    52Plan
  • CVE-2024-47685144 days apartnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()
    36Monitor
  • CVE-2024-368980 days apartgpiolib: cdev: fix uninitialised kfifo
    31Monitor
  • CVE-2021-475536 days apartsched/scs: Reset task stack state in bringup_cpu()
    31Monitor
  • CVE-2024-2702229 days apartfork: defer linking file vma until vma is fully initialized
    31Monitor
  • CVE-2024-50143161 days apartudf: fix uninit-value use in udf_get_fileshortad
    31Monitor

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.
  • No special conditions are required; it is repeatable.

If successful

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

Weakness class (CWE)

CWE-908 · Use of Uninitialized Resource

CVSS vector

CVSS:3.1/AV:L/AC:L/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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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

References

Show all references (8 more)

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

All records