CVE-2026-45846

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-27. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()

bareudp_fill_metadata_dst() passes bareudp->sock to udp_tunnel6_dst_lookup() in the IPv6 path without a NULL check. The socket is only created in bareudp_open() and NULLed in bareudp_stop(), so calling this function while the device is down triggers a NULL dereference via sock->sk.

BUG: kernel NULL pointer dereference, address: 0000000000000018 RIP: 0010:udp_tunnel6_dst_lookup (net/ipv6/ip6_udp_tunnel.c:160) Call Trace: bareudp_fill_metadata_dst (drivers/net/bareudp.c:532) do_execute_actions (net/openvswitch/actions.c:901) ovs_execute_actions (net/openvswitch/actions.c:1589) ovs_packet_cmd_execute (net/openvswitch/datapath.c:700) genl_family_rcv_msg_doit (net/netlink/genetlink.c:1114) genl_rcv_msg (net/netlink/genetlink.c:1209) netlink_rcv_skb (net/netlink/af_netlink.c:2550)

Add a NULL check returning -ESHUTDOWN, consistent with the xmit paths in the same driver.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 25, 2026

Advisory Details (8)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aa6c6d9ee064aabfede4402fd1283424e649ca19
generic

bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a0f4e4e8e0f5e24ddd83e3d1221732621cf34636
generic

bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/74a02921c48fcd35a7881956c9e5c52b86595f5d
generic

bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/638905520fc4fae6a80991563f264131545ba3df
generic

bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/55193df8d6d33318435f19572bf5ea47a22eee28
generic

bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/51eef9c072aa3405a6823a96ae666d38a3b48750
generic

bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/35a115a204be08f97450b0389413e218268ef4a2
generic

bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/31e010a106ff6cd8ccac4bfee547fd3fa1015574

Vendor Advisories for CVE-2026-45846(2)

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-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-23ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-23ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-23ubuntu
ubuntulinux-tools-intel-iotg-edge (5.15.0.1107.113~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-23ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-23ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-aws-edge (5.15.0.1112.119~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-23ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-08-23ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-23ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-23ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-23ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-23ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-23ubuntu
linuxKernel @ 5.10.258—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 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (137 versions)7.0.10-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(24)

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 / 65× 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 188 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-45846?
CVE-2026-45846 is a medium vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: bareudp: fix NULL pointer dereference in bareudpfillmetadata_dst() bareudpfillmetadata_dst() passes bareudp->sock to udptunnel6dst_lookup() in the IPv6 path without a NULL check. The socket is only created in bareudp_open() and…
When was CVE-2026-45846 disclosed?
CVE-2026-45846 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45846 actively exploited?
CVE-2026-45846 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 97.4% of all scored CVEs.
What is the CVSS score of CVE-2026-45846?
CVE-2026-45846 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-45846?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45846, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-45846

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