CVE-2024-50278

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2024-11-19. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: NoneExposed: 0

A fix is available — apply it.

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

dm cache: fix potential out-of-bounds access on the first resume

Out-of-bounds access occurs if the fast device is expanded unexpectedly before the first-time resume of the cache table. This happens because expanding the fast device requires reloading the cache table for cache_create to allocate new in-core data structures that fit the new size, and the check in cache_preresume is not performed during the first resume, leading to the issue.

Reproduce steps:

  • prepare component devices:

dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 65536 linear /dev/sdc 8192" dmsetup create corig --table "0 524288 linear /dev/sdc 262144" dd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct

  • load a cache table of 512 cache blocks, and deliberately expand the
fast device before resuming the cache, making the in-core data structures inadequate.

dmsetup create cache --notable dmsetup reload cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" dmsetup reload cdata --table "0 131072 linear /dev/sdc 8192" dmsetup resume cdata dmsetup resume cache

  • suspend the cache to write out the in-core dirty bitset and hint
array, leading to out-of-bounds access to the dirty bitset at offset 0x40:

dmsetup suspend cache

KASAN reports:

BUG: KASAN: vmalloc-out-of-bounds in is_dirty_callback+0x2b/0x80 Read of size 8 at addr ffffc90000085040 by task dmsetup/90

(...snip...) The buggy address belongs to the virtual mapping at [ffffc90000085000, ffffc90000087000) created by: cache_ctr+0x176a/0x35f0

(...snip...) Memory state around the buggy address: ffffc90000084f00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90000084f80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 >ffffc90000085000: 00 00 00 00 00 00 00 00 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffffc90000085080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90000085100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8

Fix by checking the size change on the first resume.

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
17.8%
KEV
Not listed

Published

November 19, 2024

Last Modified

November 3, 2025

References (10)

Vendor Advisories for CVE-2024-50278(1)

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-virtual-hwe-24.04-edge (6.11.0-18.18) @ oracular2026-05-23ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.11.0-1005.5) @ oracular2026-05-23ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.133.132) @ jammy2026-05-23ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.134.145~20.04.1) @ focal2026-05-23ubuntu
ubuntulinux-tools-oracle-lts-20.04 (5.4.0.1138.131) @ focal2026-05-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1058 (5.4.0-1058.62) @ focal2026-05-23ubuntu
ubuntulinux-tools-kvm (5.4.0.1127.123) @ focal2026-05-23ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1075.71) @ jammy2026-05-23ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1077.86~20.04.1) @ focal2026-05-23ubuntu
ubuntulinux-tools-intel-iotg-edge (5.15.0.1073.79~20.04.2) @ focal2026-05-23ubuntu
ubuntulinux-tools-fips (5.4.0.1116.113) @ focal2026-05-23ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (5.15.0.133.143~20.04.1) @ focal2026-05-23ubuntu
ubuntulinux-tools-aws-lts-22.04 (5.15.0.1078.80) @ jammy2026-05-23ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1072.70) @ jammy2026-05-23ubuntu
ubuntulinux-tools-ibm (5.15.0.1070.66) @ jammy2026-05-23ubuntu
ubuntulinux-tools-ibm-lts-20.04 (5.4.0.1086.115) @ focal2026-05-23ubuntu
ubuntulinux-tools-aws-edge (5.4.0.1142.152~18.04.1) @ bionic2026-05-23ubuntu
ubuntulinux-tools-oem-24.04b (6.11.0-1015.15) @ noble2026-05-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt (5.15.0.1033.33) @ jammy2026-05-23ubuntu
ubuntulinux-tools-kvm (5.15.0.1076.72) @ jammy2026-05-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1044.48) @ jammy2026-05-23ubuntu
ubuntulinux-tools-iot (5.4.0.1048.46) @ focal2026-05-23ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1075.81~20.04.1) @ focal2026-05-23ubuntu
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.208.204) @ focal2026-05-23ubuntu
ubuntulinux-virtual (6.8.0-58.60) @ noble2026-05-23ubuntu
ubuntulinux-tools-raspi2-hwe-18.04-edge (5.4.0.1129.160) @ focal2026-05-23ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1028.30~22.04.1) @ jammy2026-05-23ubuntu
ubuntulinux-tools-realtime-hwe-24.04 (6.8.1-1020.21) @ noble2026-05-23ubuntu
ubuntulinux-tools-aws-edge (6.8.0-1027.29~22.04.1) @ jammy2026-05-23ubuntu
redhatkernel-0:5.14.0-570.12.1.el9_62025-05-13redhat
linuxKernel @ 4.19.324—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.

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 13× 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.

  1. 2026-07-23 14:17 UTCEPSS rescore
  2. 2026-07-23 14:17 UTCEPSS rescore
  3. 2026-07-23 02:42 UTCEG score recompute
  4. 2026-07-22 14:07 UTCEPSS rescore
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  19. 2026-07-13 22:29 UTCEPSS rescore
  20. 2026-07-13 19:07 UTCOSV refresh
  21. 2026-07-13 06:12 UTCEPSS rescore
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  1. 2026-07-09 19:09 UTCEPSS rescore
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  4. 2026-07-06 16:26 UTCEPSS rescore
  5. 2026-07-06 02:22 UTCEPSS rescore
  6. 2026-07-05 02:29 UTCEPSS rescore
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  8. 2026-07-01 15:05 UTCEPSS rescore
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  14. 2026-06-27 03:07 UTCEPSS rescore
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  16. 2026-06-25 16:16 UTCOSV refresh
  17. 2026-06-25 13:49 UTCEPSS rescore
  18. 2026-06-24 14:04 UTCEPSS rescore
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  20. 2026-06-23 21:32 UTCEPSS rescore
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  24. 2026-06-21 14:56 UTCEPSS rescore
  25. 2026-06-21 01:59 UTCEPSS rescore
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  27. 2026-06-19 19:25 UTCEPSS rescore
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  41. 2026-06-11 13:59 UTCEPSS rescore
  42. 2026-06-10 22:18 UTCEPSS rescore
  43. 2026-06-10 13:21 UTCEPSS rescore
  44. 2026-06-08 14:16 UTCEPSS rescore
  45. 2026-06-08 14:16 UTCEPSS rescore
  46. 2026-06-08 06:28 UTCOSV refresh
  47. 2026-06-07 15:24 UTCEPSS rescore
  48. 2026-06-07 15:24 UTCEPSS rescore
  49. 2026-06-06 13:46 UTCEPSS rescore
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  51. 2026-06-05 22:46 UTCEPSS rescore
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  72. 2026-05-26 07:18 UTCEPSS rescore
  73. 2026-05-23 17:59 UTCEG score recompute
  74. 2026-05-23 17:59 UTCVendor advisory
  75. 2026-05-23 17:58 UTCGHSA enrichment

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2024-50278?
CVE-2024-50278 is a high vulnerability published on November 19, 2024. In the Linux kernel, the following vulnerability has been resolved: dm cache: fix potential out-of-bounds access on the first resume Out-of-bounds access occurs if the fast device is expanded unexpectedly before the first-time resume of the cache table. This happens because expanding the fast…
When was CVE-2024-50278 disclosed?
CVE-2024-50278 was first published in the National Vulnerability Database on November 19, 2024, with the most recent update on November 3, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-50278 actively exploited?
CVE-2024-50278 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-50278?
CVE-2024-50278 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2024-50278?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-50278, 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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