CVE-2021-47219

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2024-04-10. 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:

scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs()

The following issue was observed running syzkaller:

BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:377 [inline] BUG: KASAN: slab-out-of-bounds in sg_copy_buffer+0x150/0x1c0 lib/scatterlist.c:831 Read of size 2132 at addr ffff8880aea95dc8 by task syz-executor.0/9815

CPU: 0 PID: 9815 Comm: syz-executor.0 Not tainted 4.19.202-00874-gfc0fe04215a9 #2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xe4/0x14a lib/dump_stack.c:118 print_address_description+0x73/0x280 mm/kasan/report.c:253 kasan_report_error mm/kasan/report.c:352 [inline] kasan_report+0x272/0x370 mm/kasan/report.c:410 memcpy+0x1f/0x50 mm/kasan/kasan.c:302 memcpy include/linux/string.h:377 [inline] sg_copy_buffer+0x150/0x1c0 lib/scatterlist.c:831 fill_from_dev_buffer+0x14f/0x340 drivers/scsi/scsi_debug.c:1021 resp_report_tgtpgs+0x5aa/0x770 drivers/scsi/scsi_debug.c:1772 schedule_resp+0x464/0x12f0 drivers/scsi/scsi_debug.c:4429 scsi_debug_queuecommand+0x467/0x1390 drivers/scsi/scsi_debug.c:5835 scsi_dispatch_cmd+0x3fc/0x9b0 drivers/scsi/scsi_lib.c:1896 scsi_request_fn+0x1042/0x1810 drivers/scsi/scsi_lib.c:2034 __blk_run_queue_uncond block/blk-core.c:464 [inline] __blk_run_queue+0x1a4/0x380 block/blk-core.c:484 blk_execute_rq_nowait+0x1c2/0x2d0 block/blk-exec.c:78 sg_common_write.isra.19+0xd74/0x1dc0 drivers/scsi/sg.c:847 sg_write.part.23+0x6e0/0xd00 drivers/scsi/sg.c:716 sg_write+0x64/0xa0 drivers/scsi/sg.c:622 __vfs_write+0xed/0x690 fs/read_write.c:485 kill_bdev:block_device:00000000e138492c vfs_write+0x184/0x4c0 fs/read_write.c:549 ksys_write+0x107/0x240 fs/read_write.c:599 do_syscall_64+0xc2/0x560 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe

We get 'alen' from command its type is int. If userspace passes a large length we will get a negative 'alen'.

Switch n, alen, and rlen to u32.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

Published

April 10, 2024

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f347c26836c270199de1599c3cd466bb7747caa9
generic

scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/66523553fa62c7878fc5441dc4e82be71934eb77
generic

scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8440377e1a5644779b4c8d013aa2a917f5fc83c3

Vendor Advisories for CVE-2021-47219(1)

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

Patch Availability(20)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.211.206) @ focal2026-05-24ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1060 (5.4.0-1060.64) @ focal2026-05-24ubuntu
ubuntulinux-tools-aws-lts-20.04 (5.4.0.1142.139) @ focal2026-05-24ubuntu
ubuntulinux-tools-ibm-edge (5.4.0.1090.95~18.04.1) @ bionic2026-05-24ubuntu
ubuntulinux-tools-gcp-fips (5.4.0.1145.87) @ focal2026-05-24ubuntu
ubuntulinux-tools-aws-fips (5.4.0.1142.89) @ focal2026-05-24ubuntu
ubuntulinux-tools-fips (5.4.0.1116.113) @ focal2026-05-24ubuntu
ubuntulinux-tools-iot (5.4.0.1048.46) @ focal2026-05-24ubuntu
ubuntulinux-tools-aws-edge (5.4.0.1142.152~18.04.1) @ bionic2026-05-24ubuntu
ubuntulinux-virtual-hwe-16.04-edge (4.15.0.237.249~16.04.1) @ xenial2026-05-24ubuntu
ubuntulinux-virtual-lts-xenial (4.4.0.268.274) @ xenial2026-05-24ubuntu
ubuntulinux-tools-azure (4.15.0.1188.203~14.04.1) @ trusty2026-05-24ubuntu
ubuntulinux-tools-fips (4.4.0.1113.114) @ xenial2026-05-24ubuntu
ubuntulinux-tools-gcp-fips (4.15.0.2081.79) @ bionic2026-05-24ubuntu
ubuntulinux-tools-azure-fips (4.15.0.2097.93) @ bionic2026-05-24ubuntu
ubuntulinux-virtual-lts-xenial (4.4.0.268.302~14.04.1) @ trusty2026-05-24ubuntu
ubuntulinux-tools-raspi2-hwe-18.04-edge (5.4.0.1129.160) @ focal2026-05-24ubuntu
ubuntulinux-tools-raspi-hwe-18.04-edge (5.4.0.1129.142~18.04.1) @ bionic2026-05-24ubuntu
ubuntulinux-tools-aws (4.4.0.1143.140) @ trusty2026-05-24ubuntu
ubuntulinux-tools-azure-edge (4.15.0.1188.203~16.04.1) @ xenial2026-05-24ubuntu

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

(20)

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 14× in last 7d / 47× 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 120 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2021-47219?
CVE-2021-47219 is a high vulnerability published on April 10, 2024. In the Linux kernel, the following vulnerability has been resolved: scsi: scsidebug: Fix out-of-bound read in respreport_tgtpgs() The following issue was observed running syzkaller: BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:377 [inline] BUG: KASAN: slab-out-of-bounds in…
When was CVE-2021-47219 disclosed?
CVE-2021-47219 was first published in the National Vulnerability Database on April 10, 2024, 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-2021-47219 actively exploited?
CVE-2021-47219 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 84.0% of all scored CVEs.
What is the CVSS score of CVE-2021-47219?
CVE-2021-47219 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2021-47219?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47219, 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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