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NVD / CVE Program· CNA Linux

CVE-2024-50299: sctp: properly validate chunk size in sctp_sf_ootb()

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: 0.62% (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 0ead60804b64f5bd6999eec88e503c6a1a242d41, 40b283ba76665437bc2ac72079c51b57b25bff9e, 67b9a278b80f71ec62091ded97c6bcbea33b5ec3; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1.
  • Severity is disputed: the assigning authority (CNA) scores it 8.2, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 0ead60804b64f5bd6999eec88e503c6a1a242d41, 40b283ba76665437bc2ac72079c51b57b25bff9e, 67b9a278b80f71ec62091ded97c6bcbea33b5ec3; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1 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: sctp: properly validate chunk size in sctp_sf_ootb() A size validation fix similar to that in Commit 50619dbf8db7 ("sctp: add size validation when walking chunks") is also required in sctp_sf_ootb() to address a crash reported by syzbot: BUG: KMSAN: uninit-value in sctp_sf_ootb+0x7f5/0xce0 net/sctp/sm_statefuns.c:3712 sctp_sf_ootb+0x7f5/0xce0 net/sctp/sm_statefuns.c:3712 sctp_do_sm+0x181/0x93d0 net/sctp/sm_sideeffect.c:1166 sctp_endpoint_bh_rcv+0xc38/0xf90 net/sctp/endpointola.c:407 sctp_inq_push+0x2ef/0x380 net/sctp/inqueue.c:88 sctp_rcv+0x3831/0x3b20 net/sctp/input.c:243 sctp4_rcv+0x42/0x50 net/sctp/protocol.c:1159 ip_protocol_deliver_rcu+0xb51/0x13d0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x336/0x500 net/ipv4/ip_input.c:233

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Nov 19, 2024
Updated
Oct 15, 2026
EPSS
0.6% · 49th 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 · 0.6%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Linux
8.2
2.7 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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.

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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

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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.

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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 kernel2.6.12 and later · before 4.19.324
  • linux linux kernel4.20 and later · before 5.4.286
  • linux linux kernel5.5 and later · before 5.10.230
  • linux linux kernel5.11 and later · before 5.15.172
  • linux linux kernel5.16 and later · before 6.1.117
  • linux linux kernel6.2 and later · before 6.6.61
  • linux linux kernel6.7 and later · before 6.11.8
  • linux linux kernel6.12

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

    • 2.6.12affected
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 67b9a278b80f71ec62091ded97c6bcbea33b5ec3affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 9b5d42aeaf1a52f73b003a33da6deef7df34685faffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 40b283ba76665437bc2ac72079c51b57b25bff9eaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before a758aa6a773bb872196bcc3173171ef8996bddf0affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before bf9bff13225baf5f658577f7d985fc4933d79527affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before d3fb3cc83cf313e4f87063ce0f3fea76b071567baffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 8820d2d6589f62ee5514793fff9b50c9f8101182affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 0ead60804b64f5bd6999eec88e503c6a1a242d41affected · git
    • before 2.6.12not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.119-16.1.119-1
Debian:13linuxbefore 6.11.9-16.11.9-1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-64kbbefore 5.14.21-150500.55.94.15.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-docsbefore 5.14.21-150500.55.94.15.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-obs-buildbefore 5.14.21-150500.55.94.15.14.21-150500.55.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-symsbefore 5.14.21-150500.55.94.15.14.21-150500.55.94.1
SUSE:Linux Enterprise Live Patching 15 SP5kernel-livepatch-SLE15-SP5_Update_23before 1-150500.11.3.11-150500.11.3.1
SUSE:Linux Enterprise Micro 5.5kernel-defaultbefore 5.14.21-150500.55.94.15.14.21-150500.55.94.1
SUSE:Linux Enterprise Micro 5.5kernel-default-basebefore 5.14.21-150500.55.94.1.150500.6.43.15.14.21-150500.55.94.1.150500.6.43.1
SUSE:Linux Enterprise Micro 5.5kernel-rtbefore 5.14.21-150500.13.85.15.14.21-150500.13.85.1
SUSE:Linux Enterprise Micro 5.5kernel-sourcebefore 5.14.21-150500.55.94.15.14.21-150500.55.94.1
SUSE:Linux Enterprise Micro 5.5kernel-source-rtbefore 5.14.21-150500.13.85.15.14.21-150500.13.85.1
SUSE:Linux Enterprise Server 15 SP5-LTSSkernel-zfcpdumpbefore 5.14.21-150500.55.94.15.14.21-150500.55.94.1

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-2024-50289Nov 19, 2024 · media: av7110: fix a spectre vulnerability
    22Monitor
  • ← EarlierCVE-2024-50298Nov 19, 2024 · net: enetc: allocate vf_state during PF probes
    22Monitor
  • Later →CVE-2024-50301Nov 19, 2024 · security/keys: fix slab-out-of-bounds in key_task_permission
    28Monitor

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 Linux0ead60804b64f5bd6999eec88e503c6a1a242d41Vendor (CNA)
Linux Linux40b283ba76665437bc2ac72079c51b57b25bff9eVendor (CNA)
Linux Linux67b9a278b80f71ec62091ded97c6bcbea33b5ec3Vendor (CNA)
Linux Linux8820d2d6589f62ee5514793fff9b50c9f8101182Vendor (CNA)
Linux Linux9b5d42aeaf1a52f73b003a33da6deef7df34685fVendor (CNA)
Linux Linuxa758aa6a773bb872196bcc3173171ef8996bddf0Vendor (CNA)
Linux Linuxbf9bff13225baf5f658577f7d985fc4933d79527Vendor (CNA)
Linux Linuxd3fb3cc83cf313e4f87063ce0f3fea76b071567bVendor (CNA)
azl3 kernel 6.6.57.1-7 on Azure Linux 3.06.6.64.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 kernel 6.6.64.2-1 on Azure Linux 3.06.6.64.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.167.1-2 on CBL Mariner 2.05.15.173.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.167.1-2 on CBL-Mariner 2.05.15.173.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.173.1-1 on CBL Mariner 2.05.15.173.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.119-1 · Debian:12Package registry (OSV)
suse:kernel-64kb5.14.21-150500.55.94.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSPackage registry (OSV)
suse:kernel-default5.14.21-150500.55.94.1 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)
suse:kernel-default-base5.14.21-150500.55.94.1.150500.6.43.1 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)
suse:kernel-docs5.14.21-150500.55.94.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSPackage registry (OSV)
suse:kernel-livepatch-SLE15-SP5_Update_231-150500.11.3.1 · SUSE:Linux Enterprise Live Patching 15 SP5Package registry (OSV)
suse:kernel-obs-build5.14.21-150500.55.94.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSPackage registry (OSV)
suse:kernel-rt5.14.21-150500.13.85.1 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)
suse:kernel-source5.14.21-150500.55.94.1 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)
suse:kernel-source-rt5.14.21-150500.13.85.1 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)
suse:kernel-syms5.14.21-150500.55.94.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSPackage registry (OSV)
suse:kernel-zfcpdump5.14.21-150500.55.94.1 · SUSE:Linux Enterprise Server 15 SP5-LTSSPackage 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-2024-503020 days apartHID: core: zero-initialize the report bufferKEV
    52Plan
  • CVE-2024-4768529 days apartnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()
    36Monitor
  • CVE-2026-43139533 days apartxfrm6: fix uninitialized saddr in xfrm6_get_saddr()
    34Monitor
  • CVE-2026-43291535 days apartnet: nfc: nci: Fix parameter validation for packet data
    33Monitor
  • CVE-2024-5014312 days apartudf: fix uninit-value use in udf_get_fileshortad
    31Monitor
  • CVE-2024-36898173 days apartgpiolib: cdev: fix uninitialised kfifo
    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 (12 more)

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

All records