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CVE-2024-50299

sctp: properly validate chunk size in sctp_sf_ootb()

MEDIUM
5.5
CVSS Score
Published: November 19, 2024 at 01:30 AM UTC
Updated: October 15, 2026 at 01:19 AM UTC
15 products affected across 2 vendorsLinux KernelSIMATIC S7-1500 CPU 1518-4 Pn /dp MFP FirmwareSiplus S7-1500 CPU 1518-4 Pn /dp MFP Firmware

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

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

Affected

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

Linux Kernel· Linux
95%
2.6.12 ≤ v < 4.19.3244.20 ≤ v < 5.4.2865.11 ≤ v < 5.15.1725.16 ≤ v < 6.1.1175.5 ≤ v < 5.10.2306.2 ≤ v < 6.6.616.7 ≤ v < 6.11.81da177e4c3f41524e886b7f1b8a0c1fc7321cac26.126.12 rc16.12 rc26.12 rc36.12 rc46.12 rc56.12 rc6
Vendor states this is fixed in 0ead60804b64f5bd6999eec88e503c6a1a242d41 (fixed)
Vendor states this is fixed in 40b283ba76665437bc2ac72079c51b57b25bff9e (fixed)
Vendor states this is fixed in 67b9a278b80f71ec62091ded97c6bcbea33b5ec3 (fixed)
Vendor states this is fixed in 8820d2d6589f62ee5514793fff9b50c9f8101182 (fixed)
Vendor states this is fixed in 9b5d42aeaf1a52f73b003a33da6deef7df34685f (fixed)
Vendor states this is fixed in a758aa6a773bb872196bcc3173171ef8996bddf0 (fixed)
Vendor states this is fixed in bf9bff13225baf5f658577f7d985fc4933d79527 (fixed)
Vendor states this is fixed in d3fb3cc83cf313e4f87063ce0f3fea76b071567b (fixed)
Vendor states this is fixed in 2.6.12 (unaffected)
Vendor states this is fixed in 4.19.324 (unaffected)
Vendor states this is fixed in 5.10.230 (unaffected)
Vendor states this is fixed in 5.15.172 (unaffected)
Vendor states this is fixed in 5.4.286 (unaffected)
Vendor states this is fixed in 6.1.117 (unaffected)
Vendor states this is fixed in 6.11.8 (unaffected)
Vendor states this is fixed in 6.12 (unaffected)
Vendor states this is fixed in 6.6.61 (unaffected)
RUGGEDCOM RST2428P Firmware· Siemens
60%
v < V3.2
Affected range stops below V3.2, so it looks safe — our inference, not a vendor statement
SCALANCE XC-300· Siemens
60%
v < V3.2
Affected range stops below V3.2, so it looks safe — our inference, not a vendor statement
SCALANCE XC-400· Siemens
60%
v < V3.2
Affected range stops below V3.2, so it looks safe — our inference, not a vendor statement
SCALANCE XCH-300· Siemens
60%
v < V3.2
Affected range stops below V3.2, so it looks safe — our inference, not a vendor statement
SCALANCE XCM-300· Siemens
60%
v < V3.2
Affected range stops below V3.2, so it looks safe — our inference, not a vendor statement
Scalance Xr 300· Siemens
60%
v < V3.2
Affected range stops below V3.2, so it looks safe — our inference, not a vendor statement
SCALANCE XR-500· Siemens
60%
v < V3.2
Affected range stops below V3.2, so it looks safe — our inference, not a vendor statement
SCALANCE XR-500WG· Siemens
60%
v < V3.2
Affected range stops below V3.2, so it looks safe — our inference, not a vendor statement
SCALANCE XRH-300· Siemens
60%
v < V3.2
Affected range stops below V3.2, so it looks safe — our inference, not a vendor statement

References (13)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/0ead60804b64f5bd6999eec88e503c6a1a242d41
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/40b283ba76665437bc2ac72079c51b57b25bff9e
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/67b9a278b80f71ec62091ded97c6bcbea33b5ec3
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8820d2d6589f62ee5514793fff9b50c9f8101182
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9b5d42aeaf1a52f73b003a33da6deef7df34685f
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a758aa6a773bb872196bcc3173171ef8996bddf0
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bf9bff13225baf5f658577f7d985fc4933d79527
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d3fb3cc83cf313e4f87063ce0f3fea76b071567b

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-908

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