CVE-2026-53111

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-06-24. 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:

bpf: test_run: Fix the null pointer dereference issue in bpf_lwt_xmit_push_encap

The bpf_lwt_xmit_push_encap helper needs to access skb_dst(skb)->dev to calculate the needed headroom:

err = skb_cow_head(skb, len + LL_RESERVED_SPACE(skb_dst(skb)->dev));

But skb->_skb_refdst may not be initialized when the skb is set up by bpf_prog_test_run_skb function. Executing bpf_lwt_push_ip_encap function in this scenario will trigger null pointer dereference, causing a kernel crash as Yinhao reported:

[ 105.186365] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 105.186382] #PF: supervisor read access in kernel mode [ 105.186388] #PF: error_code(0x0000) - not-present page [ 105.186393] PGD 121d3d067 P4D 121d3d067 PUD 106c83067 PMD 0 [ 105.186404] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 105.186412] CPU: 3 PID: 3250 Comm: poc Kdump: loaded Not tainted 6.19.0-rc5 #1 [ 105.186423] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 105.186427] RIP: 0010:bpf_lwt_push_ip_encap+0x1eb/0x520 [ 105.186443] Code: 0f 84 de 01 00 00 0f b7 4a 04 66 85 c9 0f 85 47 01 00 00 31 c0 5b 5d 41 5c 41 5d 41 5e c3 cc cc cc cc 48 8b 73 58 48 83 e6 fe <48> 8b 36 0f b7 be ec 00 00 00 0f b7 b6 e6 00 00 00 01 fe 83 e6 f0 [ 105.186449] RSP: 0018:ffffbb0e0387bc50 EFLAGS: 00010246 [ 105.186455] RAX: 000000000000004e RBX: ffff94c74e036500 RCX: ffff94c74874da00 [ 105.186460] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff94c74e036500 [ 105.186463] RBP: 0000000000000001 R08: 0000000000000002 R09: 0000000000000000 [ 105.186467] R10: ffffbb0e0387bd50 R11: 0000000000000000 R12: ffffbb0e0387bc98 [ 105.186471] R13: 0000000000000014 R14: 0000000000000000 R15: 0000000000000002 [ 105.186484] FS: 00007f166aa4d680(0000) GS:ffff94c8b7780000(0000) knlGS:0000000000000000 [ 105.186490] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 105.186494] CR2: 0000000000000000 CR3: 000000015eade001 CR4: 0000000000770ee0 [ 105.186499] PKRU: 55555554 [ 105.186502] Call Trace: [ 105.186507] [ 105.186513] bpf_lwt_xmit_push_encap+0x2b/0x40 [ 105.186522] bpf_prog_a75eaad51e517912+0x41/0x49 [ 105.186536] ? kvm_clock_get_cycles+0x18/0x30 [ 105.186547] ? ktime_get+0x3c/0xa0 [ 105.186554] bpf_test_run+0x195/0x320 [ 105.186563] ? bpf_test_run+0x10f/0x320 [ 105.186579] bpf_prog_test_run_skb+0x2f5/0x4f0 [ 105.186590] __sys_bpf+0x69c/0xa40 [ 105.186603] __x64_sys_bpf+0x1e/0x30 [ 105.186611] do_syscall_64+0x59/0x110 [ 105.186620] entry_SYSCALL_64_after_hwframe+0x76/0xe0 [ 105.186649] RIP: 0033:0x7f166a97455d

Temporarily add the setting of skb->_skb_refdst before bpf_test_run to resolve the issue.

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
2%
KEV
Not listed

Published

June 24, 2026

Last Modified

July 23, 2026

Advisory Details (6)

Auto-updated Jul 24, 2026
No patch confirmed yet.
generic

bpf: test_run: Fix the null pointer dereference issue in bpf_lwt_xmit_push_encap - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c7ad31fb948fdd4905263f4324160682c3fa7bc6
generic

bpf: test_run: Fix the null pointer dereference issue in bpf_lwt_xmit_push_encap - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/972787479ee73006fddb5e59ab5c8e733810ff42
generic

bpf: test_run: Fix the null pointer dereference issue in bpf_lwt_xmit_push_encap - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/94f95328b9070909b5b875c647b17a11d3d85567
generic

bpf: test_run: Fix the null pointer dereference issue in bpf_lwt_xmit_push_encap - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5c8d1f91fc4898d79f29d79c1a6f7c2b3ee66fb0
generic

bpf: test_run: Fix the null pointer dereference issue in bpf_lwt_xmit_push_encap - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/599905c3f10bb83e6e6881d5a7f5cea5df07dc23
generic

bpf: test_run: Fix the null pointer dereference issue in bpf_lwt_xmit_push_encap - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5500913516e071dbe23e5a404c861dd2d82c9589

Vendor Advisories for CVE-2026-53111(2)

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

Patch Availability(22)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-08-30ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-30ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-30ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-30ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-lowlatency-hwe-22.04-edge (6.8.0-136.136.2~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-30ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-30ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-30ubuntu

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 ... 7.2~rc5-1~exp1 (496 versions)——
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 (140 versions)7.0.10-1—

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 5× in last 7d / 60× 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 175 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53111?
CVE-2026-53111 is a medium vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: bpf: testrun: Fix the null pointer dereference issue in bpflwtxmitpush_encap The bpflwtxmitpushencap helper needs to access skb_dst(skb)->dev to calculate the needed headroom: err = skbcowhead(skb, len +…
When was CVE-2026-53111 disclosed?
CVE-2026-53111 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53111 actively exploited?
CVE-2026-53111 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 97.8% of all scored CVEs.
What is the CVSS score of CVE-2026-53111?
CVE-2026-53111 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-53111?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53111, 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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