CVE-2025-38491

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 5.5 from GitHub Security Advisory published 2025-07-28. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2025-22872 (ENISA EUVD) · GHSA-f3wq-3888-8q7g (GitHub Security Advisories)Source: ENISA EUVD

5.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

mptcp: make fallback action and fallback decision atomic

Syzkaller reported the following splat:

WARNING: CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223 __mptcp_do_fallback net/mptcp/protocol.h:1223 [inline] WARNING: CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223 mptcp_do_fallback net/mptcp/protocol.h:1244 [inline] WARNING: CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223 check_fully_established net/mptcp/options.c:982 [inline] WARNING: CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223 mptcp_incoming_options+0x21a8/0x2510 net/mptcp/options.c:1153 Modules linked in: CPU: 1 UID: 0 PID: 7704 Comm: syz.3.1419 Not tainted 6.16.0-rc3-gbd5ce2324dba #20 PREEMPT(voluntary) Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__mptcp_do_fallback net/mptcp/protocol.h:1223 [inline] RIP: 0010:mptcp_do_fallback net/mptcp/protocol.h:1244 [inline] RIP: 0010:check_fully_established net/mptcp/options.c:982 [inline] RIP: 0010:mptcp_incoming_options+0x21a8/0x2510 net/mptcp/options.c:1153 Code: 24 18 e8 bb 2a 00 fd e9 1b df ff ff e8 b1 21 0f 00 e8 ec 5f c4 fc 44 0f b7 ac 24 b0 00 00 00 e9 54 f1 ff ff e8 d9 5f c4 fc 90 <0f> 0b 90 e9 b8 f4 ff ff e8 8b 2a 00 fd e9 8d e6 ff ff e8 81 2a 00 RSP: 0018:ffff8880a3f08448 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8880180a8000 RCX: ffffffff84afcf45 RDX: ffff888090223700 RSI: ffffffff84afdaa7 RDI: 0000000000000001 RBP: ffff888017955780 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880180a8910 R14: ffff8880a3e9d058 R15: 0000000000000000 FS: 00005555791b8500(0000) GS:ffff88811c495000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2800b7 CR3: 0000000058e44000 CR4: 0000000000350ef0 Call Trace: tcp_reset+0x26f/0x2b0 net/ipv4/tcp_input.c:4432 tcp_validate_incoming+0x1057/0x1b60 net/ipv4/tcp_input.c:5975 tcp_rcv_established+0x5b5/0x21f0 net/ipv4/tcp_input.c:6166 tcp_v4_do_rcv+0x5dc/0xa70 net/ipv4/tcp_ipv4.c:1925 tcp_v4_rcv+0x3473/0x44a0 net/ipv4/tcp_ipv4.c:2363 ip_protocol_deliver_rcu+0xba/0x480 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2f1/0x500 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:317 [inline] NF_HOOK include/linux/netfilter.h:311 [inline] ip_local_deliver+0x1be/0x560 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:469 [inline] ip_rcv_finish net/ipv4/ip_input.c:447 [inline] NF_HOOK include/linux/netfilter.h:317 [inline] NF_HOOK include/linux/netfilter.h:311 [inline] ip_rcv+0x514/0x810 net/ipv4/ip_input.c:567 __netif_receive_skb_one_core+0x197/0x1e0 net/core/dev.c:5975 __netif_receive_skb+0x1f/0x120 net/core/dev.c:6088 process_backlog+0x301/0x1360 net/core/dev.c:6440 __napi_poll.constprop.0+0xba/0x550 net/core/dev.c:7453 napi_poll net/core/dev.c:7517 [inline] net_rx_action+0xb44/0x1010 net/core/dev.c:7644 handle_softirqs+0x1d0/0x770 kernel/softirq.c:579 do_softirq+0x3f/0x90 kernel/softirq.c:480 __local_bh_enable_ip+0xed/0x110 kernel/softirq.c:407 local_bh_enable include/linux/bottom_half.h:33 [inline] inet_csk_listen_stop+0x2c5/0x1070 net/ipv4/inet_connection_sock.c:1524 mptcp_check_listen_stop.part.0+0x1cc/0x220 net/mptcp/protocol.c:2985 mptcp_check_listen_stop net/mptcp/mib.h:118 [inline] __mptcp_close+0x9b9/0xbd0 net/mptcp/protocol.c:3000 mptcp_close+0x2f/0x140 net/mptcp/protocol.c:3066 inet_release+0xed/0x200 net/ipv4/af_inet.c:435 inet6_release+0x4f/0x70 net/ipv6/af_inet6.c:487 __sock_release+0xb3/0x270 net/socket.c:649 sock_close+0x1c/0x30 net/socket.c:1439 __fput+0x402/0xb70 fs/file_table.c:465 task_work_run+0x150/0x240 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xd4 ---truncated---

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity55% × 45%
Impact severity (EG Severity): CVSS 5.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.2%
EPSS %ILE
15th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.

EG Severity
5.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 28, 2025

Last Modified

October 15, 2026

Advisory Details (7)

Auto-updated Aug 2, 2026
Patch available.
Web page

SSA-032379

https://cert-portal.siemens.com/productcert/html/ssa-032379.html
Web pageMentions a patch (unverified)

[SECURITY] [DLA 4328-1] linux-6.1 security update

https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Web page

mptcp: make fallback action and fallback decision atomic - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f8a1d9b18c5efc76784f5a326e905f641f839894
Web page

mptcp: make fallback action and fallback decision atomic - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/75a4c9ab8a7af0d76b31ccd1188ed178c38b35d2
Web page

mptcp: make fallback action and fallback decision atomic - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5586518bec27666c747cd52aabb62d485686d0bf
Web page

mptcp: make fallback action and fallback decision atomic - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/54999dea879fecb761225e28f274b40662918c30
Web page

mptcp: make fallback action and fallback decision atomic - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1d82a8fe6ee4afdc92f4e8808c9dad2a6095bbc5

Vendor Advisories for CVE-2025-38491(1)

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

Patch Availability(23)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-virtual-6.8 (6.8.0-100.100) @ noble2026-10-15ubuntu
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1041.42~22.04.1) @ jammy2026-10-15ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1047.50~22.04.2) @ jammy2026-10-15ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1041.42) @ noble2026-10-15ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-100.100+fips1) @ noble2026-10-15ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1043.44) @ noble2026-10-15ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1047.50+fips1) @ noble2026-10-15ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-100.100~22.04.1) @ jammy2026-10-15ubuntu
ubuntulinux-tools-gke-64k-6.8 (6.8.0-1043.48) @ noble2026-10-15ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-100.100.1) @ noble2026-10-15ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1046.49.1) @ noble2026-10-15ubuntu
ubuntulinux-tools-ibm-lts-24.04 (6.8.0-1044.44) @ noble2026-10-15ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1023.24) @ noble2026-10-15ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1046.52) @ noble2026-10-15ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1046.52+fips1) @ noble2026-10-15ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1051.57~22.04.1) @ jammy2026-10-15ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-36.36) @ plucky2026-10-15ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.14.0-1016.16~24.04.1) @ noble2026-10-15ubuntu
ubuntulinux-tools-oem-6.14 (6.14.0-1016.16) @ noble2026-10-15ubuntu
ubuntulinux-tools-oracle-edge (6.14.0-1017.17~24.04.1) @ noble2026-10-15ubuntu
ubuntulinux-tools-raspi-6.14 (6.14.0-1018.18) @ plucky2026-10-15ubuntu
ubuntulinux-tools-azure-6.14 (6.14.0-1017.17) @ plucky2026-10-15ubuntu
linuxKernel @ 6.1.149 (fixes >=5.19.0)—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 rangeFix by version rangeDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (496 versions)
  • every version on: no fix on record
—
linux-6.16.1.106-3~deb11u1 ... 6.1.148-1~deb11u1 (11 versions)
  • every version up to 6.1.153-1~deb11u1: fixed in 6.1.153-1~deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (43 versions)
  • every version up to 6.1.153-1: fixed in 6.1.153-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1
  • every version up to 6.12.41-1: fixed in 6.12.41-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.16~rc7-1~exp1 (62 versions)
  • every version up to 6.16.3-1: fixed in 6.16.3-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(22)

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 7× in last 7d / 41× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 98 of 213 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 115 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-03 16:44 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  2. 2026-11-02 16:42 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  3. 2026-11-01 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  4. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  5. 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  6. 2026-10-29 16:31 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  7. 2026-10-28 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-10-27 19:25 UTCOSV refresh
  9. 2026-10-27 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  10. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  11. 2026-10-25 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-10-25 16:30 UTCEG score recompute
  13. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  14. 2026-10-23 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  15. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  16. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  17. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  18. 2026-10-19 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  19. 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  20. 2026-10-18 05:35 UTCEG score recompute
  21. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  22. 2026-10-16 16:38 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  23. 2026-10-15 23:08 UTCEG score recompute
  24. 2026-10-15 23:08 UTCVendor advisory
  25. 2026-10-15 23:07 UTCGHSA enrichmentGHSA-f3wq-3888-8q7g · GitHub CVSS 5.5
Show 73 more
  1. 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  2. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  3. 2026-10-13 16:32 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  4. 2026-10-12 17:07 UTCEG score recompute
  5. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  6. 2026-10-11 20:40 UTCEG score recompute
  7. 2026-10-11 18:51 UTCEG score recompute
  8. 2026-10-11 15:28 UTCEG score recompute
  9. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  10. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  11. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  12. 2026-10-08 17:09 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  13. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  14. 2026-10-06 15:16 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  15. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  16. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  17. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  18. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  19. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  20. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  21. 2026-09-27 02:12 UTCOSV refresh
  22. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  23. 2026-09-26 00:24 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  24. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  25. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  26. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  27. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  28. 2026-09-17 19:29 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  29. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  30. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  31. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  32. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  33. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  34. 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  35. 2026-09-10 09:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  36. 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  37. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  38. 2026-09-07 11:18 UTCOSV refresh
  39. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  40. 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  41. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  42. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  43. 2026-09-01 04:38 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  44. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  45. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  46. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  47. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  48. 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  49. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  50. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  51. 2026-08-20 22:54 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  52. 2026-08-20 20:31 UTCOSV refresh
  53. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  54. 2026-08-18 13:47 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  55. 2026-08-17 13:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  56. 2026-08-16 14:55 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  57. 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  58. 2026-08-15 01:29 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  59. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  60. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  61. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  62. 2026-08-08 16:36 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  63. 2026-08-07 16:26 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  64. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  65. 2026-08-05 13:02 UTCEG score recompute
  66. 2026-08-05 13:02 UTCVendor advisory
  67. 2026-08-05 13:02 UTCGHSA enrichmentGHSA-f3wq-3888-8q7g · GitHub CVSS 5.5
  68. 2026-08-04 15:09 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  69. 2026-08-04 10:37 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  70. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  71. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  72. 2026-08-01 04:15 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  73. 2026-07-30 16:27 UTCEPSS rescoreEPSS 0.2% · 9th percentile

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2025-38491?
CVE-2025-38491 is a medium-severity vulnerability; its CVE record was published on July 28, 2025. In the Linux kernel, the following vulnerability has been resolved: mptcp: make fallback action and fallback decision atomic Syzkaller reported the following splat: WARNING: CPU: 1 PID: 7704 at net/mptcp/protocol.h:1223 __mptcp_do_fallback net/mptcp/protocol.h:1223 [inline] WARNING: CPU: 1 PID:…
When was the CVE record for CVE-2025-38491 published?
The CVE record for CVE-2025-38491 was published on July 28, 2025. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 15, 2026; the record at its source may have been updated since.
Is CVE-2025-38491 actively exploited?
CVE-2025-38491 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (15th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-38491?
CVE-2025-38491 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2025-38491?
A fix for CVE-2025-38491 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-38491 are linked in the Vendor Advisories panel on this page.

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