CVE-2025-38574

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-08-19. 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:

pptp: ensure minimal skb length in pptp_xmit()

Commit aabc6596ffb3 ("net: ppp: Add bound checking for skb data on ppp_sync_txmung") fixed ppp_sync_txmunge()

We need a similar fix in pptp_xmit(), otherwise we might read uninit data as reported by syzbot.

BUG: KMSAN: uninit-value in pptp_xmit+0xc34/0x2720 drivers/net/ppp/pptp.c:193 pptp_xmit+0xc34/0x2720 drivers/net/ppp/pptp.c:193 ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2290 [inline] ppp_input+0x1d6/0xe60 drivers/net/ppp/ppp_generic.c:2314 pppoe_rcv_core+0x1e8/0x760 drivers/net/ppp/pppoe.c:379 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 pppoe_sendmsg+0x15d/0xcb0 drivers/net/ppp/pppoe.c:904 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x330/0x3d0 net/socket.c:727 ____sys_sendmsg+0x893/0xd80 net/socket.c:2566 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2620 __sys_sendmmsg+0x2d9/0x7c0 net/socket.c:2709

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

August 19, 2025

Last Modified

August 5, 2026

Advisory Details (10)

Auto-updated Jul 31, 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

pptp: ensure minimal skb length in pptp_xmit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ea99b88b1999ebcb24d5d3a6b7910030f40d3bba
generic

pptp: ensure minimal skb length in pptp_xmit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/de9c4861fb42f0cd72da844c3c34f692d5895b7b
generic

pptp: ensure minimal skb length in pptp_xmit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b7dcda76fd0615c0599c89f36873a6cd48e02dbb
generic

pptp: ensure minimal skb length in pptp_xmit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/97b8c5d322c5c0038cac4bc56fdbe237d0be426f
generic

pptp: ensure minimal skb length in pptp_xmit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5de7513f38f3c19c0610294ee478242bea356f8c
generic

pptp: ensure minimal skb length in pptp_xmit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/504cc4ab91073d2ac7404ad146139f86ecee7193
generic

pptp: ensure minimal skb length in pptp_xmit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5005d24377378a20e5c0e53052fc4ebdcdcbc611
generic

pptp: ensure minimal skb length in pptp_xmit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/26672f1679b143aa34fca0b6046b7fd0c184770d
generic

pptp: ensure minimal skb length in pptp_xmit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1a04db0fd75cb6034fc27a56b67b3b8b9022a98c

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-realtime-hwe-24.04-edge (6.14.0-1016.16~24.04.1) @ noble2026-07-30ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1061 (5.15.0-1061.65) @ jammy2026-07-30ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1101.99) @ jammy2026-07-30ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1101.86) @ jammy2026-07-30ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1091.89) @ jammy2026-07-30ubuntu
ubuntulinux-tools-gkeop-5.15 (5.15.0.1080.79) @ jammy2026-07-30ubuntu
ubuntulinux-tools-kvm-5.15 (5.15.0.1089.85) @ jammy2026-07-30ubuntu
ubuntulinux-tools-raspi-6.14 (6.14.0-1018.18) @ plucky2026-07-30ubuntu
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1041.42~22.04.1) @ jammy2026-07-30ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1047.50~22.04.2) @ jammy2026-07-30ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1041.42) @ noble2026-07-30ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-100.100+fips1) @ noble2026-07-30ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1023.24) @ noble2026-07-30ubuntu
ubuntulinux-tools-ibm-lts-24.04 (6.8.0-1044.44) @ noble2026-07-30ubuntu
ubuntulinux-tools-gke-64k-6.8 (6.8.0-1043.48) @ noble2026-07-30ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1046.52) @ noble2026-07-30ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-100.100.1) @ noble2026-07-30ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1046.52+fips1) @ noble2026-07-30ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1047.50+fips1) @ noble2026-07-30ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-100.100~22.04.1) @ jammy2026-07-30ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1046.49.1) @ noble2026-07-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-36.36) @ plucky2026-07-30ubuntu
ubuntulinux-tools-oracle-edge (6.14.0-1017.17~24.04.1) @ noble2026-07-30ubuntu
ubuntulinux-tools-oem-6.14 (6.14.0-1016.16) @ noble2026-07-30ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1102.111~20.04.1) @ focal2026-07-30ubuntu
ubuntulinux-tools-azure-6.14 (6.14.0-1017.17) @ plucky2026-07-30ubuntu
ubuntulinux-tools-realtime-5.15 (5.15.0.1096.100) @ jammy2026-07-30ubuntu
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1097.87) @ jammy2026-07-30ubuntu
ubuntulinux-virtual-6.8 (6.8.0-100.100) @ noble2026-07-30ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1043.44~22.04.1) @ jammy2026-07-30ubuntu
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 ... 6.1.148-1~deb11u1 (11 versions)6.1.153-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (42 versions)6.1.148-1—
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 (62 versions)6.16.3-1—

Weakness Classification(1)

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

All Vendor Advisories

(25)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 5× in last 7d / 25× 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 147 total refreshes for this CVE.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-17 19:29 UTCEPSS rescore
  3. 2026-09-16 14:07 UTCEPSS rescore
  4. 2026-09-16 05:14 UTCEPSS rescore
  5. 2026-09-13 16:46 UTCEPSS rescore
  6. 2026-09-12 15:00 UTCEPSS rescore
  7. 2026-09-11 14:52 UTCEPSS rescore
  8. 2026-09-11 09:35 UTCEPSS rescore
  9. 2026-09-10 09:33 UTCEPSS rescore
  10. 2026-09-08 21:59 UTCEPSS rescore
  11. 2026-09-07 16:00 UTCEPSS rescore
  12. 2026-09-07 11:18 UTCOSV refresh
  13. 2026-09-06 13:46 UTCEPSS rescore
  14. 2026-09-04 05:05 UTCEPSS rescore
  15. 2026-09-02 14:11 UTCEPSS rescore
  16. 2026-09-01 13:53 UTCEPSS rescore
  17. 2026-09-01 04:38 UTCEPSS rescore
  18. 2026-08-30 19:16 UTCEPSS rescore
  19. 2026-08-30 01:21 UTCEPSS rescore
  20. 2026-08-28 21:40 UTCEPSS rescore
  21. 2026-08-27 14:24 UTCEPSS rescore
  22. 2026-08-26 14:45 UTCEPSS rescore
  23. 2026-08-25 13:48 UTCEPSS rescore
  24. 2026-08-23 00:18 UTCEPSS rescore
  25. 2026-08-21 23:48 UTCEPSS rescore
Show 75 more
  1. 2026-08-20 22:54 UTCEPSS rescore
  2. 2026-08-20 20:31 UTCOSV refresh
  3. 2026-08-19 17:03 UTCEPSS rescore
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-18 13:47 UTCEPSS rescore
  6. 2026-08-17 13:46 UTCEPSS rescore
  7. 2026-08-16 14:55 UTCEPSS rescore
  8. 2026-08-16 02:13 UTCEPSS rescore
  9. 2026-08-15 01:29 UTCEPSS rescore
  10. 2026-08-13 21:59 UTCEPSS rescore
  11. 2026-08-12 13:50 UTCEPSS rescore
  12. 2026-08-09 13:46 UTCEPSS rescore
  13. 2026-08-08 16:36 UTCEPSS rescore
  14. 2026-08-07 16:26 UTCEPSS rescore
  15. 2026-08-06 13:46 UTCEPSS rescore
  16. 2026-08-05 13:01 UTCEG score recompute
  17. 2026-08-05 13:01 UTCVendor advisory
  18. 2026-08-05 13:00 UTCGHSA enrichment
  19. 2026-08-04 15:09 UTCEPSS rescore
  20. 2026-08-04 10:37 UTCEPSS rescore
  21. 2026-08-03 10:35 UTCEPSS rescore
  22. 2026-08-02 02:26 UTCEPSS rescore
  23. 2026-08-01 04:15 UTCEPSS rescore
  24. 2026-07-30 16:27 UTCEPSS rescore
  25. 2026-07-30 07:03 UTCEG score recompute
  26. 2026-07-30 07:03 UTCVendor advisory
  27. 2026-07-30 07:03 UTCGHSA enrichment
  28. 2026-07-30 01:29 UTCEPSS rescore
  29. 2026-07-28 15:35 UTCEPSS rescore
  30. 2026-07-26 14:54 UTCEPSS rescore
  31. 2026-07-25 14:17 UTCEPSS rescore
  32. 2026-07-25 14:17 UTCEPSS rescore
  33. 2026-07-24 14:17 UTCEPSS rescore
  34. 2026-07-23 22:41 UTCOSV refresh
  35. 2026-07-23 02:54 UTCEG score recompute
  36. 2026-07-22 14:07 UTCEPSS rescore
  37. 2026-07-22 14:07 UTCEPSS rescore
  38. 2026-07-21 15:24 UTCEPSS rescore
  39. 2026-07-20 17:07 UTCEPSS rescore
  40. 2026-07-19 14:30 UTCEPSS rescore
  41. 2026-07-19 14:30 UTCEPSS rescore
  42. 2026-07-19 02:28 UTCEPSS rescore
  43. 2026-07-19 02:28 UTCEPSS rescore
  44. 2026-07-18 10:04 UTCEPSS rescore
  45. 2026-07-18 10:04 UTCEPSS rescore
  46. 2026-07-16 17:02 UTCEPSS rescore
  47. 2026-07-15 16:57 UTCEPSS rescore
  48. 2026-07-15 16:57 UTCEPSS rescore
  49. 2026-07-15 01:59 UTCEPSS rescore
  50. 2026-07-15 01:59 UTCEPSS rescore
  51. 2026-07-13 06:12 UTCEPSS rescore
  52. 2026-07-12 05:46 UTCEPSS rescore
  53. 2026-07-11 08:27 UTCEPSS rescore
  54. 2026-07-11 08:27 UTCEPSS rescore
  55. 2026-07-09 19:09 UTCEPSS rescore
  56. 2026-07-09 19:09 UTCEPSS rescore
  57. 2026-07-07 13:45 UTCEPSS rescore
  58. 2026-07-06 16:51 UTCOSV refresh
  59. 2026-07-06 16:27 UTCEPSS rescore
  60. 2026-07-06 16:27 UTCEPSS rescore
  61. 2026-07-06 02:23 UTCEPSS rescore
  62. 2026-07-05 02:30 UTCEPSS rescore
  63. 2026-07-04 06:30 UTCEPSS rescore
  64. 2026-07-01 15:06 UTCEPSS rescore
  65. 2026-07-01 15:06 UTCEPSS rescore
  66. 2026-06-30 23:22 UTCEPSS rescore
  67. 2026-06-30 23:22 UTCEPSS rescore
  68. 2026-06-29 14:06 UTCEPSS rescore
  69. 2026-06-29 14:06 UTCEPSS rescore
  70. 2026-06-28 14:07 UTCEPSS rescore
  71. 2026-06-28 14:07 UTCEPSS rescore
  72. 2026-06-28 04:55 UTCEPSS rescore
  73. 2026-06-28 04:55 UTCEPSS rescore
  74. 2026-06-27 03:08 UTCEPSS rescore
  75. 2026-06-27 03:08 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-38574?
CVE-2025-38574 is a high vulnerability published on August 19, 2025. In the Linux kernel, the following vulnerability has been resolved: pptp: ensure minimal skb length in pptp_xmit() Commit aabc6596ffb3 ("net: ppp: Add bound checking for skb data on pppsynctxmung") fixed pppsynctxmunge() We need a similar fix in pptp_xmit(), otherwise we might read uninit data as…
When was CVE-2025-38574 disclosed?
CVE-2025-38574 was first published in the National Vulnerability Database on August 19, 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-2025-38574 actively exploited?
CVE-2025-38574 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 69.5% of all scored CVEs.
What is the CVSS score of CVE-2025-38574?
CVE-2025-38574 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2025-38574?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-38574, 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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