CVE-2025-21719

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2025-02-27. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

A fix is available — apply it.

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

ipmr: do not call mr_mfc_uses_dev() for unres entries

syzbot found that calling mr_mfc_uses_dev() for unres entries would crash [1], because c->mfc_un.res.minvif / c->mfc_un.res.maxvif alias to "struct sk_buff_head unresolved", which contain two pointers.

This code never worked, lets remove it.

[1] Unable to handle kernel paging request at virtual address ffff5fff2d536613 KASAN: maybe wild-memory-access in range [0xfffefff96a9b3098-0xfffefff96a9b309f] Modules linked in: CPU: 1 UID: 0 PID: 7321 Comm: syz.0.16 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : mr_mfc_uses_dev net/ipv4/ipmr_base.c:290 [inline] pc : mr_table_dump+0x5a4/0x8b0 net/ipv4/ipmr_base.c:334 lr : mr_mfc_uses_dev net/ipv4/ipmr_base.c:289 [inline] lr : mr_table_dump+0x694/0x8b0 net/ipv4/ipmr_base.c:334 Call trace: mr_mfc_uses_dev net/ipv4/ipmr_base.c:290 [inline] (P) mr_table_dump+0x5a4/0x8b0 net/ipv4/ipmr_base.c:334 (P) mr_rtm_dumproute+0x254/0x454 net/ipv4/ipmr_base.c:382 ipmr_rtm_dumproute+0x248/0x4b4 net/ipv4/ipmr.c:2648 rtnl_dump_all+0x2e4/0x4e8 net/core/rtnetlink.c:4327 rtnl_dumpit+0x98/0x1d0 net/core/rtnetlink.c:6791 netlink_dump+0x4f0/0xbc0 net/netlink/af_netlink.c:2317 netlink_recvmsg+0x56c/0xe64 net/netlink/af_netlink.c:1973 sock_recvmsg_nosec net/socket.c:1033 [inline] sock_recvmsg net/socket.c:1055 [inline] sock_read_iter+0x2d8/0x40c net/socket.c:1125 new_sync_read fs/read_write.c:484 [inline] vfs_read+0x740/0x970 fs/read_write.c:565 ksys_read+0x15c/0x26c fs/read_write.c:708

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

February 27, 2025

Last Modified

August 5, 2026

Advisory Details (10)

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

[SECURITY] [DLA 4178-1] linux security update

https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
generic Patch Available

[SECURITY] [DLA 4102-1] linux-6.1 security update

https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
generic

ipmr: do not call mr_mfc_uses_dev() for unres entries - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b379b3162ff55a70464c6a934ae9bf0497478a62
generic

ipmr: do not call mr_mfc_uses_dev() for unres entries - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a099834a51ccf9bbba3de86a251b3433539abfde
generic

ipmr: do not call mr_mfc_uses_dev() for unres entries - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/71a0fcb68c0a5f3ec912b540cd5d72148e6ee5f1
generic

ipmr: do not call mr_mfc_uses_dev() for unres entries - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/57177c5f47a8da852f8d76cf6945cf803f8bb9e5
generic

ipmr: do not call mr_mfc_uses_dev() for unres entries - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/547ef7e8cbb98f966c8719a3e15d4e078aaa9b47
generic

ipmr: do not call mr_mfc_uses_dev() for unres entries - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/53df27fd38f84bd3cd6b004eb4ff3c4903114f1d
generic

ipmr: do not call mr_mfc_uses_dev() for unres entries - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/26bb7d991f04eeef47dfad23e533834995c26f7a
generic

ipmr: do not call mr_mfc_uses_dev() for unres entries - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/15a901361ec3fb1c393f91880e1cbf24ec0a88bd

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-fips (5.15.0.140.80) @ jammy2026-07-30ubuntu
ubuntulinux-tools-gcp-lts-22.04 (5.15.0.1083.79) @ jammy2026-07-30ubuntu
ubuntulinux-tools-gcp-fips (5.15.0.1083.73) @ jammy2026-07-30ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1083.92~20.04.1) @ focal2026-07-30ubuntu
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.216.208) @ focal2026-07-30ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1064 (5.4.0-1064.68) @ focal2026-07-30ubuntu
ubuntulinux-tools-azure-fips (5.4.0.1151.88) @ focal2026-07-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.11.0-26.26) @ oracular2026-07-30ubuntu
ubuntulinux-tools-realtime (5.15.0.1084.88) @ jammy2026-07-30ubuntu
ubuntulinux-tools-lowlatency-hwe-24.04-edge (6.11.0-1014.15~24.04.1) @ noble2026-07-30ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1078.76) @ jammy2026-07-30ubuntu
ubuntulinux-tools-raspi-hwe-18.04-edge (5.4.0.1129.142~18.04.1) @ bionic2026-07-30ubuntu
ubuntulinux-tools-aws-edge (5.4.0.1146.156~18.04.1) @ bionic2026-07-30ubuntu
ubuntulinux-tools-aws-lts-20.04 (5.4.0.1146.143) @ focal2026-07-30ubuntu
ubuntulinux-tools-fips (5.4.0.1120.117) @ focal2026-07-30ubuntu
ubuntulinux-tools-aws-edge (5.15.0.1084.91~20.04.1) @ focal2026-07-30ubuntu
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1050.54) @ jammy2026-07-30ubuntu
ubuntulinux-tools-iot (5.4.0.1051.49) @ focal2026-07-30ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1025.26) @ noble2026-07-30ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-64.67.1) @ noble2026-07-30ubuntu
ubuntulinux-tools-azure-nvidia-lts-24.04 (6.8.0-1022.23) @ noble2026-07-30ubuntu
ubuntulinux-tools-nvidia-tegra-rt (5.15.0.1037.37) @ jammy2026-07-30ubuntu
ubuntulinux-tools-azure-fips (5.15.0.1089.74) @ jammy2026-07-30ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.140.135) @ jammy2026-07-30ubuntu
ubuntulinux-tools-gcp-fips (5.4.0.1149.91) @ focal2026-07-30ubuntu
ubuntulinux-tools-gke-5.15 (5.15.0.1081.80) @ jammy2026-07-30ubuntu
ubuntulinux-tools-kvm (5.4.0.1133.129) @ focal2026-07-30ubuntu
ubuntulinux-tools-oracle-edge (5.4.0.1144.154~18.04.1) @ bionic2026-07-30ubuntu
ubuntulinux-tools-ibm-edge (5.4.0.1092.97~18.04.1) @ bionic2026-07-30ubuntu
ubuntulinux-tools-aws (6.11.0-1014.15) @ oracular2026-07-30ubuntu
linuxKernel @ 5.4.291—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.

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 10× in last 7d / 46× 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 141 total refreshes for this CVE.

  1. 2026-08-07 16:26 UTCEPSS rescore
  2. 2026-08-06 13:46 UTCEPSS rescore
  3. 2026-08-05 19:16 UTCEPSS rescore
  4. 2026-08-05 14:04 UTCEG score recompute
  5. 2026-08-05 14:04 UTCVendor advisory
  6. 2026-08-05 14:04 UTCGHSA enrichment
  7. 2026-08-04 15:09 UTCEPSS rescore
  8. 2026-08-04 10:37 UTCEPSS rescore
  9. 2026-08-03 10:35 UTCEPSS rescore
  10. 2026-08-02 02:25 UTCEPSS rescore
  11. 2026-08-01 04:15 UTCEPSS rescore
  12. 2026-07-30 16:27 UTCEPSS rescore
  13. 2026-07-30 07:23 UTCEG score recompute
  14. 2026-07-30 07:23 UTCVendor advisory
  15. 2026-07-30 07:22 UTCGHSA enrichment
  16. 2026-07-30 01:29 UTCEPSS rescore
  17. 2026-07-28 15:35 UTCEPSS rescore
  18. 2026-07-28 01:24 UTCOSV refresh
  19. 2026-07-27 14:12 UTCEPSS rescore
  20. 2026-07-26 14:53 UTCEPSS rescore
  21. 2026-07-25 14:17 UTCEPSS rescore
  22. 2026-07-24 14:17 UTCEPSS rescore
  23. 2026-07-23 14:17 UTCEPSS rescore
  24. 2026-07-23 02:50 UTCEG score recompute
  25. 2026-07-22 14:07 UTCEPSS rescore
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  1. 2026-07-22 14:07 UTCEPSS rescore
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  3. 2026-07-19 14:30 UTCEPSS rescore
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  5. 2026-07-19 02:28 UTCEPSS rescore
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  8. 2026-07-16 17:02 UTCEPSS rescore
  9. 2026-07-15 16:57 UTCEPSS rescore
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  11. 2026-07-15 01:59 UTCEPSS rescore
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  18. 2026-07-11 08:27 UTCEPSS rescore
  19. 2026-07-11 08:26 UTCEPSS rescore
  20. 2026-07-10 17:41 UTCOSV refresh
  21. 2026-07-09 19:09 UTCEPSS rescore
  22. 2026-07-08 15:14 UTCEPSS rescore
  23. 2026-07-07 13:45 UTCEPSS rescore
  24. 2026-07-06 16:26 UTCEPSS rescore
  25. 2026-07-05 02:30 UTCEPSS rescore
  26. 2026-07-04 06:30 UTCEPSS rescore
  27. 2026-07-01 15:06 UTCEPSS rescore
  28. 2026-06-30 23:21 UTCEPSS rescore
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  30. 2026-06-29 14:06 UTCEPSS rescore
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  41. 2026-06-23 21:32 UTCEPSS rescore
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  43. 2026-06-22 14:25 UTCEPSS rescore
  44. 2026-06-22 14:25 UTCEPSS rescore
  45. 2026-06-22 01:37 UTCOSV refresh
  46. 2026-06-21 14:56 UTCEPSS rescore
  47. 2026-06-21 14:56 UTCEPSS rescore
  48. 2026-06-21 01:59 UTCEPSS rescore
  49. 2026-06-21 01:59 UTCEPSS rescore
  50. 2026-06-19 19:25 UTCEPSS rescore
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  52. 2026-06-18 17:52 UTCEPSS rescore
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  57. 2026-06-15 17:48 UTCEPSS rescore
  58. 2026-06-14 23:17 UTCEPSS rescore
  59. 2026-06-13 22:59 UTCEPSS rescore
  60. 2026-06-12 23:11 UTCEPSS rescore
  61. 2026-06-11 13:59 UTCEPSS rescore
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  74. 2026-06-04 13:11 UTCEPSS rescore
  75. 2026-06-04 13:11 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2025-21719?
CVE-2025-21719 is a high vulnerability published on February 27, 2025. In the Linux kernel, the following vulnerability has been resolved: ipmr: do not call mrmfcuses_dev() for unres entries syzbot found that calling mrmfcuses_dev() for unres entries would crash [1], because c->mfcun.res.minvif / c->mfcun.res.maxvif alias to "struct skbuffhead unresolved", which…
When was CVE-2025-21719 disclosed?
CVE-2025-21719 was first published in the National Vulnerability Database on February 27, 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-2025-21719 actively exploited?
CVE-2025-21719 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 91.1% of all scored CVEs.
What is the CVSS score of CVE-2025-21719?
CVE-2025-21719 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2025-21719?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-21719, 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.

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