CVE-2024-38578

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2024-06-19. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

ecryptfs: Fix buffer size for tag 66 packet

The 'TAG 66 Packet Format' description is missing the cipher code and checksum fields that are packed into the message packet. As a result, the buffer allocated for the packet is 3 bytes too small and write_tag_66_packet() will write up to 3 bytes past the end of the buffer.

Fix this by increasing the size of the allocation so the whole packet will always fit in the buffer.

This fixes the below kasan slab-out-of-bounds bug:

BUG: KASAN: slab-out-of-bounds in ecryptfs_generate_key_packet_set+0x7d6/0xde0 Write of size 1 at addr ffff88800afbb2a5 by task touch/181

CPU: 0 PID: 181 Comm: touch Not tainted 6.6.13-gnu #1 4c9534092be820851bb687b82d1f92a426598dc6 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2/GNU Guix 04/01/2014 Call Trace: dump_stack_lvl+0x4c/0x70 print_report+0xc5/0x610 ? ecryptfs_generate_key_packet_set+0x7d6/0xde0 ? kasan_complete_mode_report_info+0x44/0x210 ? ecryptfs_generate_key_packet_set+0x7d6/0xde0 kasan_report+0xc2/0x110 ? ecryptfs_generate_key_packet_set+0x7d6/0xde0 __asan_store1+0x62/0x80 ecryptfs_generate_key_packet_set+0x7d6/0xde0 ? __pfx_ecryptfs_generate_key_packet_set+0x10/0x10 ? __alloc_pages+0x2e2/0x540 ? __pfx_ovl_open+0x10/0x10 [overlay 30837f11141636a8e1793533a02e6e2e885dad1d] ? dentry_open+0x8f/0xd0 ecryptfs_write_metadata+0x30a/0x550 ? __pfx_ecryptfs_write_metadata+0x10/0x10 ? ecryptfs_get_lower_file+0x6b/0x190 ecryptfs_initialize_file+0x77/0x150 ecryptfs_create+0x1c2/0x2f0 path_openat+0x17cf/0x1ba0 ? __pfx_path_openat+0x10/0x10 do_filp_open+0x15e/0x290 ? __pfx_do_filp_open+0x10/0x10 ? __kasan_check_write+0x18/0x30 ? _raw_spin_lock+0x86/0xf0 ? __pfx__raw_spin_lock+0x10/0x10 ? __kasan_check_write+0x18/0x30 ? alloc_fd+0xf4/0x330 do_sys_openat2+0x122/0x160 ? __pfx_do_sys_openat2+0x10/0x10 __x64_sys_openat+0xef/0x170 ? __pfx___x64_sys_openat+0x10/0x10 do_syscall_64+0x60/0xd0 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f00a703fd67 Code: 25 00 00 41 00 3d 00 00 41 00 74 37 64 8b 04 25 18 00 00 00 85 c0 75 5b 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 85 00 00 00 48 83 c4 68 5d 41 5c c3 0f 1f RSP: 002b:00007ffc088e30b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007ffc088e3368 RCX: 00007f00a703fd67 RDX: 0000000000000941 RSI: 00007ffc088e48d7 RDI: 00000000ffffff9c RBP: 00007ffc088e48d7 R08: 0000000000000001 R09: 0000000000000000 R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000000941 R13: 0000000000000000 R14: 00007ffc088e48d7 R15: 00007f00a7180040

Allocated by task 181: kasan_save_stack+0x2f/0x60 kasan_set_track+0x29/0x40 kasan_save_alloc_info+0x25/0x40 __kasan_kmalloc+0xc5/0xd0 __kmalloc+0x66/0x160 ecryptfs_generate_key_packet_set+0x6d2/0xde0 ecryptfs_write_metadata+0x30a/0x550 ecryptfs_initialize_file+0x77/0x150 ecryptfs_create+0x1c2/0x2f0 path_openat+0x17cf/0x1ba0 do_filp_open+0x15e/0x290 do_sys_openat2+0x122/0x160 __x64_sys_openat+0xef/0x170 do_syscall_64+0x60/0xd0 entry_SYSCALL_64_after_hwframe+0x6e/0xd8

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

June 19, 2024

Last Modified

August 5, 2026

Advisory Details (9)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

ecryptfs: Fix buffer size for tag 66 packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0d0f8ba042af16519f1ef7dd10463a33b21b677c
generic

ecryptfs: Fix buffer size for tag 66 packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f6008487f1eeb8693f8d2a36a89c87d9122ddf74
generic

ecryptfs: Fix buffer size for tag 66 packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/edbfc42ab080e78c6907d40a42c9d10b69e445c1
generic

ecryptfs: Fix buffer size for tag 66 packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a20f09452e2f58f761d11ad7b96b5c894c91030e
generic

ecryptfs: Fix buffer size for tag 66 packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/85a6a1aff08ec9f5b929d345d066e2830e8818e5
generic

ecryptfs: Fix buffer size for tag 66 packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2ed750b7ae1b5dc72896d7dd114c419afd3d1910
generic

ecryptfs: Fix buffer size for tag 66 packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/235b85981051cd68fc215fd32a81c6f116bfc4df
generic

ecryptfs: Fix buffer size for tag 66 packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1c125b9287e58f364d82174efb167414b92b11f1
generic

ecryptfs: Fix buffer size for tag 66 packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/12db25a54ce6bb22b0af28010fff53ef9cb3fe93

Patch Availability(17)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.8.0-40.40) @ noble2026-05-22ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1049 (5.4.0-1049.53) @ focal2026-05-22ubuntu
ubuntulinux-tools-oracle-64k (6.8.0-1010.10) @ noble2026-05-22ubuntu
ubuntulinux-tools-oracle-lts-20.04 (5.4.0.1129.122) @ focal2026-05-22ubuntu
ubuntulinux-tools-azure-lts-20.04 (5.4.0.1135.129) @ focal2026-05-22ubuntu
ubuntulinux-tools-raspi (6.8.0-1009.10) @ noble2026-05-22ubuntu
ubuntulinux-tools-oem-24.04a (6.8.0-1010.10) @ noble2026-05-22ubuntu
ubuntulinux-tools-raspi-hwe-18.04-edge (5.4.0.1114.126~18.04.1) @ bionic2026-05-22ubuntu
ubuntulinux-tools-azure-fde-edge (5.15.0.1072.81~20.04.1.49) @ focal2026-05-22ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1072.70) @ jammy2026-05-22ubuntu
ubuntulinux-tools-azure-edge (5.4.0.1135.142~18.04.1) @ bionic2026-05-22ubuntu
ubuntulinux-tools-bluefield (5.4.0.1090.86) @ focal2026-05-22ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.121.121) @ jammy2026-05-22ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1067.73~20.04.1) @ focal2026-05-22ubuntu
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1035.39) @ jammy2026-05-22ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (5.15.0.121.110) @ jammy2026-05-22ubuntu
linuxKernel @ 4.19.316—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

(16)

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 13× in last 7d / 49× 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. 2026-08-07 16:25 UTCEPSS rescore
  2. 2026-08-06 13:45 UTCEPSS rescore
  3. 2026-08-05 19:16 UTCEPSS rescore
  4. 2026-08-05 12:11 UTCEG score recompute
  5. 2026-08-05 12:11 UTCVendor advisory
  6. 2026-08-05 12:11 UTCGHSA enrichment
  7. 2026-08-04 15:08 UTCEPSS rescore
  8. 2026-08-04 12:08 UTCEG score recompute
  9. 2026-08-04 12:08 UTCGHSA enrichment
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  20. 2026-07-28 12:20 UTCOSV refresh
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  1. 2026-07-23 14:17 UTCEPSS rescore
  2. 2026-07-23 02:38 UTCEG score recompute
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  23. 2026-07-11 04:11 UTCOSV refresh
  24. 2026-07-09 19:09 UTCEPSS rescore
  25. 2026-07-08 15:14 UTCEPSS rescore
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  27. 2026-07-07 13:45 UTCEPSS rescore
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  48. 2026-06-22 14:25 UTCEPSS rescore
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  50. 2026-06-22 11:04 UTCOSV refresh
  51. 2026-06-21 14:55 UTCEPSS rescore
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  73. 2026-06-06 13:46 UTCEPSS rescore
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  75. 2026-06-05 22:46 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2024-38578?
CVE-2024-38578 is a high vulnerability published on June 19, 2024. In the Linux kernel, the following vulnerability has been resolved: ecryptfs: Fix buffer size for tag 66 packet The 'TAG 66 Packet Format' description is missing the cipher code and checksum fields that are packed into the message packet. As a result, the buffer allocated for the packet is 3 bytes…
When was CVE-2024-38578 disclosed?
CVE-2024-38578 was first published in the National Vulnerability Database on June 19, 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-2024-38578 actively exploited?
CVE-2024-38578 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 82.0% of all scored CVEs.
What is the CVSS score of CVE-2024-38578?
CVE-2024-38578 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2024-38578?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-38578, 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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