CVE-2022-50674

UNRATEDCVSS · not yet scored
—
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS v2: —Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

riscv: vdso: fix NULL deference in vdso_join_timens() when vfork

Testing tools/testing/selftests/timens/vfork_exec.c got below kernel log:

[ 6.838454] Unable to handle kernel access to user memory without uaccess routines at virtual address 0000000000000020 [ 6.842255] Oops [#1] [ 6.842871] Modules linked in: [ 6.844249] CPU: 1 PID: 64 Comm: vfork_exec Not tainted 6.0.0-rc3-rt15+ #8 [ 6.845861] Hardware name: riscv-virtio,qemu (DT) [ 6.848009] epc : vdso_join_timens+0xd2/0x110 [ 6.850097] ra : vdso_join_timens+0xd2/0x110 [ 6.851164] epc : ffffffff8000635c ra : ffffffff8000635c sp : ff6000000181fbf0 [ 6.852562] gp : ffffffff80cff648 tp : ff60000000fdb700 t0 : 3030303030303030 [ 6.853852] t1 : 0000000000000030 t2 : 3030303030303030 s0 : ff6000000181fc40 [ 6.854984] s1 : ff60000001e6c000 a0 : 0000000000000010 a1 : ffffffff8005654c [ 6.856221] a2 : 00000000ffffefff a3 : 0000000000000000 a4 : 0000000000000000 [ 6.858114] a5 : 0000000000000000 a6 : 0000000000000008 a7 : 0000000000000038 [ 6.859484] s2 : ff60000001e6c068 s3 : ff6000000108abb0 s4 : 0000000000000000 [ 6.860751] s5 : 0000000000001000 s6 : ffffffff8089dc40 s7 : ffffffff8089dc38 [ 6.862029] s8 : ffffffff8089dc30 s9 : ff60000000fdbe38 s10: 000000000000005e [ 6.863304] s11: ffffffff80cc3510 t3 : ffffffff80d1112f t4 : ffffffff80d1112f [ 6.864565] t5 : ffffffff80d11130 t6 : ff6000000181fa00 [ 6.865561] status: 0000000000000120 badaddr: 0000000000000020 cause: 000000000000000d [ 6.868046] [] timens_commit+0x38/0x11a [ 6.869089] [] timens_on_fork+0x72/0xb4 [ 6.870055] [] begin_new_exec+0x3c6/0x9f0 [ 6.871231] [] load_elf_binary+0x628/0x1214 [ 6.872304] [] bprm_execve+0x1f2/0x4e4 [ 6.873243] [] do_execveat_common+0x16e/0x1ee [ 6.874258] [] sys_execve+0x3c/0x48 [ 6.875162] [] ret_from_syscall+0x0/0x2 [ 6.877484] ---[ end trace 0000000000000000 ]---

This is because the mm->context.vdso_info is NULL in vfork case. From another side, mm->context.vdso_info either points to vdso info for RV64 or vdso info for compat, there's no need to bloat riscv's mm_context_t, we can handle the difference when setup the additional page for vdso.

CVSS v3
—
EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
—
EG Risk
—
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

December 9, 2025

Last Modified

April 15, 2026

References (3)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 5.19.17—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.

Data Freshness Timeline

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

Related CVEs(same product)

Frequently asked(4)

What is CVE-2022-50674?
CVE-2022-50674 is a publicly disclosed vulnerability published on December 9, 2025. In the Linux kernel, the following vulnerability has been resolved: riscv: vdso: fix NULL deference in vdsojointimens() when vfork Testing tools/testing/selftests/timens/vfork_exec.c got below kernel log: [ 6.838454] Unable to handle kernel access to user memory without uaccess routines at virtual…
When was CVE-2022-50674 disclosed?
CVE-2022-50674 was first published in the National Vulnerability Database on December 9, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-50674 actively exploited?
CVE-2022-50674 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 88.7% of all scored CVEs.
How do I remediate CVE-2022-50674?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-50674, 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

Explore the affected products and dependency analysis for CVE-2022-50674

Explore →

Is Your Infrastructure Affected by CVE-2022-50674?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs