CVE-2025-38718

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-09-05. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

sctp: linearize cloned gso packets in sctp_rcv

A cloned head skb still shares these frag skbs in fraglist with the original head skb. It's not safe to access these frag skbs.

syzbot reported two use-of-uninitialized-memory bugs caused by this:

BUG: KMSAN: uninit-value in sctp_inq_pop+0x15b7/0x1920 net/sctp/inqueue.c:211 sctp_inq_pop+0x15b7/0x1920 net/sctp/inqueue.c:211 sctp_assoc_bh_rcv+0x1a7/0xc50 net/sctp/associola.c:998 sctp_inq_push+0x2ef/0x380 net/sctp/inqueue.c:88 sctp_backlog_rcv+0x397/0xdb0 net/sctp/input.c:331 sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1122 __release_sock+0x1da/0x330 net/core/sock.c:3106 release_sock+0x6b/0x250 net/core/sock.c:3660 sctp_wait_for_connect+0x487/0x820 net/sctp/socket.c:9360 sctp_sendmsg_to_asoc+0x1ec1/0x1f00 net/sctp/socket.c:1885 sctp_sendmsg+0x32b9/0x4a80 net/sctp/socket.c:2031 inet_sendmsg+0x25a/0x280 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:718 [inline]

and

BUG: KMSAN: uninit-value in sctp_assoc_bh_rcv+0x34e/0xbc0 net/sctp/associola.c:987 sctp_assoc_bh_rcv+0x34e/0xbc0 net/sctp/associola.c:987 sctp_inq_push+0x2a3/0x350 net/sctp/inqueue.c:88 sctp_backlog_rcv+0x3c7/0xda0 net/sctp/input.c:331 sk_backlog_rcv+0x142/0x420 include/net/sock.h:1148 __release_sock+0x1d3/0x330 net/core/sock.c:3213 release_sock+0x6b/0x270 net/core/sock.c:3767 sctp_wait_for_connect+0x458/0x820 net/sctp/socket.c:9367 sctp_sendmsg_to_asoc+0x223a/0x2260 net/sctp/socket.c:1886 sctp_sendmsg+0x3910/0x49f0 net/sctp/socket.c:2032 inet_sendmsg+0x269/0x2a0 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:712 [inline]

This patch fixes it by linearizing cloned gso packets in sctp_rcv().

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

September 4, 2025

Last Modified

August 5, 2026

Advisory Details (10)

Auto-updated Jul 30, 2026
Patch available.
generic Patch Available

[SECURITY] [DLA 4327-1] linux security update

https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
generic

sctp: linearize cloned gso packets in sctp_rcv - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fd60d8a086191fe33c2d719732d2482052fa6805
generic

sctp: linearize cloned gso packets in sctp_rcv - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fc66772607101bd2030a4332b3bd0ea3b3605250
generic

sctp: linearize cloned gso packets in sctp_rcv - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ea094f38d387d1b0ded5dee4a3e5720aa4ce0139
generic

sctp: linearize cloned gso packets in sctp_rcv - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d0194e391bb493aa6cec56d177b14df6b29188d5
generic

sctp: linearize cloned gso packets in sctp_rcv - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cd0e92bb2b7542fb96397ffac639b4f5b099d0cb
generic

sctp: linearize cloned gso packets in sctp_rcv - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7d757f17bc2ef2727994ffa6d5d6e4bc4789a770
generic

sctp: linearize cloned gso packets in sctp_rcv - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4506bcaabe004d07be8ff09116a3024fbd6aa965
generic

sctp: linearize cloned gso packets in sctp_rcv - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1bd5214ea681584c5886fea3ba03e49f93a43c0e
generic

sctp: linearize cloned gso packets in sctp_rcv - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/03d0cc6889e02420125510b5444b570f4bbf53d5

Vendor Advisories for CVE-2025-38718(16)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-gcp-edge (6.8.0-1047.50~22.04.2) @ jammy2026-05-29ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1041.42) @ noble2026-05-29ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-100.100+fips1) @ noble2026-05-29ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1043.44~22.04.1) @ jammy2026-05-29ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-100.100~22.04.1) @ jammy2026-05-29ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1047.50+fips1) @ noble2026-05-29ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1046.49.1) @ noble2026-05-29ubuntu
ubuntulinux-tools-ibm-lts-24.04 (6.8.0-1044.44) @ noble2026-05-29ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1023.24) @ noble2026-05-29ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1046.52) @ noble2026-05-29ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1046.52+fips1) @ noble2026-05-29ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1051.57~22.04.1) @ jammy2026-05-29ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1101.86) @ jammy2026-05-29ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1101.99) @ jammy2026-05-29ubuntu
ubuntulinux-tools-gkeop-5.15 (5.15.0.1080.79) @ jammy2026-05-29ubuntu
redhatkernel-0:4.18.0-193.178.1.el8_22025-12-17redhat
redhatkernel-0:4.18.0-305.182.1.el8_42025-12-17redhat
redhatkernel-0:3.10.0-1160.143.1.el72025-12-09redhat
redhatkernel-rt-0:3.10.0-1160.143.1.rt56.1295.el72025-12-09redhat
redhatkernel-0:4.18.0-372.170.1.el8_62025-11-25redhat
redhatkernel-0:4.18.0-477.120.1.el8_82025-11-25redhat
redhatkernel-0:5.14.0-427.100.1.el9_42025-11-19redhat
redhatkernel-rt-0:5.14.0-70.153.1.rt21.225.el9_02025-11-12redhat
redhatkernel-0:5.14.0-70.153.1.el9_02025-11-12redhat
redhatkernel-0:5.14.0-284.144.1.el9_22025-10-29redhat
redhatkernel-rt-0:5.14.0-284.144.1.rt14.429.el9_22025-10-29redhat
redhatkernel-0:6.12.0-55.38.1.el10_02025-10-07redhat
redhatkernel-0:5.14.0-570.49.1.el9_62025-09-29redhat
redhatkernel-rt-0:4.18.0-553.77.1.rt7.418.el8_102025-09-29redhat
redhatkernel-0:4.18.0-553.77.1.el8_102025-09-29redhat
linuxKernel @ 5.4.297—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (46 versions)5.10.244-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.159-1~deb11u1 (14 versions)6.1.162-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (46 versions)6.1.162-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1, 6.12.41-1, 6.12.43-1~bpo12+16.12.43-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.16~rc7-1~exp1 (59 versions)6.16.3-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(9)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 5× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 139 total refreshes for this CVE.

  1. 2026-09-07 16:00 UTCEPSS rescore
  2. 2026-09-07 11:47 UTCOSV refresh
  3. 2026-09-06 13:46 UTCEPSS rescore
  4. 2026-09-04 05:05 UTCEPSS rescore
  5. 2026-09-02 14:11 UTCEPSS rescore
  6. 2026-09-01 13:53 UTCEPSS rescore
  7. 2026-09-01 04:38 UTCEPSS rescore
  8. 2026-08-30 19:16 UTCEPSS rescore
  9. 2026-08-30 01:21 UTCEPSS rescore
  10. 2026-08-28 21:40 UTCEPSS rescore
  11. 2026-08-27 14:24 UTCEPSS rescore
  12. 2026-08-26 14:45 UTCEPSS rescore
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  14. 2026-08-23 00:18 UTCEPSS rescore
  15. 2026-08-21 23:48 UTCEPSS rescore
  16. 2026-08-20 22:54 UTCEPSS rescore
  17. 2026-08-20 20:31 UTCOSV refresh
  18. 2026-08-19 17:03 UTCEPSS rescore
  19. 2026-08-19 17:03 UTCEPSS rescore
  20. 2026-08-18 13:47 UTCEPSS rescore
  21. 2026-08-17 13:46 UTCEPSS rescore
  22. 2026-08-16 14:55 UTCEPSS rescore
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  24. 2026-08-15 01:29 UTCEPSS rescore
  25. 2026-08-13 21:59 UTCEPSS rescore
Show 75 more
  1. 2026-08-12 13:50 UTCEPSS rescore
  2. 2026-08-09 13:46 UTCEPSS rescore
  3. 2026-08-08 16:36 UTCEPSS rescore
  4. 2026-08-07 16:26 UTCEPSS rescore
  5. 2026-08-06 13:46 UTCEPSS rescore
  6. 2026-08-05 12:59 UTCEG score recompute
  7. 2026-08-05 12:59 UTCVendor advisory
  8. 2026-08-05 12:59 UTCGHSA enrichment
  9. 2026-08-04 15:09 UTCEPSS rescore
  10. 2026-08-04 10:37 UTCEPSS rescore
  11. 2026-08-03 10:35 UTCEPSS rescore
  12. 2026-08-02 02:26 UTCEPSS rescore
  13. 2026-08-01 04:15 UTCEPSS rescore
  14. 2026-07-30 16:27 UTCEPSS rescore
  15. 2026-07-30 06:55 UTCEG score recompute
  16. 2026-07-30 06:55 UTCVendor advisory
  17. 2026-07-30 06:55 UTCGHSA enrichment
  18. 2026-07-30 06:24 UTCNVD updateCVSS v3 → 7.8 · severity → HIGH
  19. 2026-07-30 01:29 UTCEPSS rescore
  20. 2026-07-28 15:35 UTCEPSS rescore
  21. 2026-07-25 14:17 UTCEPSS rescore
  22. 2026-07-25 14:17 UTCEPSS rescore
  23. 2026-07-24 14:17 UTCEPSS rescore
  24. 2026-07-23 21:11 UTCOSV refresh
  25. 2026-07-23 02:55 UTCEG score recompute
  26. 2026-07-22 14:07 UTCEPSS rescore
  27. 2026-07-22 14:07 UTCEPSS rescore
  28. 2026-07-21 15:24 UTCEPSS rescore
  29. 2026-07-20 17:07 UTCEPSS rescore
  30. 2026-07-19 14:30 UTCEPSS rescore
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  36. 2026-07-16 17:02 UTCEPSS rescore
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  39. 2026-07-15 01:59 UTCEPSS rescore
  40. 2026-07-15 01:59 UTCEPSS rescore
  41. 2026-07-13 22:29 UTCEPSS rescore
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  43. 2026-07-13 06:12 UTCEPSS rescore
  44. 2026-07-12 05:46 UTCEPSS rescore
  45. 2026-07-11 08:27 UTCEPSS rescore
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  47. 2026-07-09 19:09 UTCEPSS rescore
  48. 2026-07-09 19:09 UTCEPSS rescore
  49. 2026-07-07 13:45 UTCEPSS rescore
  50. 2026-07-06 16:27 UTCEPSS rescore
  51. 2026-07-06 16:27 UTCEPSS rescore
  52. 2026-07-06 15:41 UTCOSV refresh
  53. 2026-07-05 02:30 UTCEPSS rescore
  54. 2026-07-04 06:30 UTCEPSS rescore
  55. 2026-07-01 15:06 UTCEPSS rescore
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  57. 2026-06-30 23:22 UTCEPSS rescore
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  65. 2026-06-27 03:08 UTCEPSS rescore
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  67. 2026-06-25 13:49 UTCEPSS rescore
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  69. 2026-06-24 14:04 UTCEPSS rescore
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  71. 2026-06-23 21:32 UTCEPSS rescore
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  73. 2026-06-22 14:25 UTCEPSS rescore
  74. 2026-06-22 14:25 UTCEPSS rescore
  75. 2026-06-21 14:56 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-38718?
CVE-2025-38718 is a high vulnerability published on September 4, 2025. In the Linux kernel, the following vulnerability has been resolved: sctp: linearize cloned gso packets in sctp_rcv A cloned head skb still shares these frag skbs in fraglist with the original head skb. It's not safe to access these frag skbs. syzbot reported two use-of-uninitialized-memory bugs…
When was CVE-2025-38718 disclosed?
CVE-2025-38718 was first published in the National Vulnerability Database on September 4, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-38718 actively exploited?
CVE-2025-38718 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 94.3% of all scored CVEs.
What is the CVSS score of CVE-2025-38718?
CVE-2025-38718 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2025-38718?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-38718, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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