CVE-2024-26703

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 5.5 from GitHub Security Advisory published 2024-04-03. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2024-23965 (ENISA EUVD) · GHSA-mccq-9gc6-hm85 (GitHub Security Advisories)Source: ENISA EUVD

5.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

tracing/timerlat: Move hrtimer_init to timerlat_fd open()

Currently, the timerlat's hrtimer is initialized at the first read of timerlat_fd, and destroyed at close(). It works, but it causes an error if the user program open() and close() the file without reading.

Here's an example:

# echo NO_OSNOISE_WORKLOAD > /sys/kernel/debug/tracing/osnoise/options # echo timerlat > /sys/kernel/debug/tracing/current_tracer

# cat < ./timerlat_load.py # !/usr/bin/env python3

timerlat_fd = open("/sys/kernel/tracing/osnoise/per_cpu/cpu0/timerlat_fd", 'r') timerlat_fd.close(); EOF

# ./taskset -c 0 ./timerlat_load.py

BUG: kernel NULL pointer dereference, address: 0000000000000010 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 2673 Comm: python3 Not tainted 6.6.13-200.fc39.x86_64 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-1.fc39 04/01/2014 RIP: 0010:hrtimer_active+0xd/0x50 Code: 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 48 8b 57 30 <8b> 42 10 a8 01 74 09 f3 90 8b 42 10 a8 01 75 f7 80 7f 38 00 75 1d RSP: 0018:ffffb031009b7e10 EFLAGS: 00010286 RAX: 000000000002db00 RBX: ffff9118f786db08 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff9117a0e64400 RDI: ffff9118f786db08 RBP: ffff9118f786db80 R08: ffff9117a0ddd420 R09: ffff9117804d4f70 R10: 0000000000000000 R11: 0000000000000000 R12: ffff9118f786db08 R13: ffff91178fdd5e20 R14: ffff9117840978c0 R15: 0000000000000000 FS: 00007f2ffbab1740(0000) GS:ffff9118f7840000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000010 CR3: 00000001b402e000 CR4: 0000000000750ee0 PKRU: 55555554 Call Trace: ? __die+0x23/0x70 ? page_fault_oops+0x171/0x4e0 ? srso_alias_return_thunk+0x5/0x7f ? avc_has_extended_perms+0x237/0x520 ? exc_page_fault+0x7f/0x180 ? asm_exc_page_fault+0x26/0x30 ? hrtimer_active+0xd/0x50 hrtimer_cancel+0x15/0x40 timerlat_fd_release+0x48/0xe0 __fput+0xf5/0x290 __x64_sys_close+0x3d/0x80 do_syscall_64+0x60/0x90 ? srso_alias_return_thunk+0x5/0x7f ? __x64_sys_ioctl+0x72/0xd0 ? srso_alias_return_thunk+0x5/0x7f ? syscall_exit_to_user_mode+0x2b/0x40 ? srso_alias_return_thunk+0x5/0x7f ? do_syscall_64+0x6c/0x90 ? srso_alias_return_thunk+0x5/0x7f ? exit_to_user_mode_prepare+0x142/0x1f0 ? srso_alias_return_thunk+0x5/0x7f ? syscall_exit_to_user_mode+0x2b/0x40 ? srso_alias_return_thunk+0x5/0x7f ? do_syscall_64+0x6c/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f2ffb321594 Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 80 3d d5 cd 0d 00 00 74 13 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3c c3 0f 1f 00 55 48 89 e5 48 83 ec 10 89 7d RSP: 002b:00007ffe8d8eef18 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 00007f2ffba4e668 RCX: 00007f2ffb321594 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ffe8d8eef40 R08: 0000000000000000 R09: 0000000000000000 R10: 55c926e3167eae79 R11: 0000000000000202 R12: 0000000000000003 R13: 00007ffe8d8ef030 R14: 0000000000000000 R15: 00007f2ffba4e668 CR2: 0000000000000010 ---[ end trace 0000000000000000 ]---

Move hrtimer_init to timerlat_fd open() to avoid this problem.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity55% × 45%
Impact severity (EG Severity): CVSS 5.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
13th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.

EG Severity
5.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-25). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

April 3, 2024

Last Modified

February 27, 2025

References (3)

Patch Availability(6)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-nvidia-hwe-22.04 (6.5.0.1023.31) @ jammy2026-10-24ubuntu
ubuntulinux-tools-gcp (6.5.0.1024.26~22.04.1) @ jammy2026-10-24ubuntu
ubuntulinux-virtual-hwe-22.04 (6.5.0.44.44~22.04.1) @ jammy2026-10-24ubuntu
ubuntulinux-tools-starfive (6.5.0.1017.18~22.04.1) @ jammy2026-10-24ubuntu
ubuntulinux-tools-oem-22.04d (6.5.0.1027.29) @ jammy2026-10-24ubuntu
linuxKernel @ 6.6.18 (fixes >=6.5.0)—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.

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.7.7-1: fixed in 6.7.7-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.7.7-1: fixed in 6.7.7-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(5)

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 7× in last 7d / 38× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 97 of 202 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 3 repeat rows among the latest 100 are merged into the row they repeat. The 105 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:40 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  2. 2026-11-01 16:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  3. 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  5. 2026-10-29 16:30 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  6. 2026-10-28 16:29 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  7. 2026-10-27 16:29 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  8. 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  9. 2026-10-25 17:15 UTCEG score recompute
  10. 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  11. 2026-10-24 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-10-24 08:25 UTCEG score recompute
  13. 2026-10-24 08:25 UTCVendor advisory
  14. 2026-10-24 08:25 UTCGHSA enrichmentGHSA-mccq-9gc6-hm85 · GitHub CVSS 5.5
  15. 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  16. 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  17. 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  18. 2026-10-20 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  19. 2026-10-19 16:29 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  20. 2026-10-18 16:29 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  21. 2026-10-18 07:23 UTCEG score recompute
  22. 2026-10-17 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  23. 2026-10-16 16:36 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-10-15 16:29 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
Show 72 more
  1. 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-10-12 17:59 UTCEG score recompute
  3. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  4. 2026-10-11 21:24 UTCEG score recompute
  5. 2026-10-11 16:54 UTCOSV refresh
  6. 2026-10-11 16:17 UTCEG score recompute
  7. 2026-10-11 13:45 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  9. 2026-10-08 17:07 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  10. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  11. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  13. 2026-10-04 23:20 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  14. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  15. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  16. 2026-09-30 16:59 UTCEG score recompute
  17. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  18. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  19. 2026-09-28 13:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  20. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  21. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  22. 2026-09-22 04:15 UTCOSV refresh
  23. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  24. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  25. 2026-09-16 05:11 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  26. 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  27. 2026-09-13 16:45 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  28. 2026-09-12 14:59 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  29. 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  31. 2026-09-08 21:58 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  35. 2026-09-04 13:58 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  36. 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  37. 2026-09-03 01:30 UTCOSV refresh
  38. 2026-09-02 14:10 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  39. 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  40. 2026-08-30 19:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  41. 2026-08-30 01:20 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  42. 2026-08-28 21:39 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  43. 2026-08-27 14:23 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  44. 2026-08-26 14:44 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  45. 2026-08-25 13:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  46. 2026-08-23 00:17 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  47. 2026-08-21 23:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  48. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  49. 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  50. 2026-08-17 13:45 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  51. 2026-08-16 14:54 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  52. 2026-08-16 14:30 UTCOSV refresh
  53. 2026-08-16 02:12 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  54. 2026-08-15 01:28 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  55. 2026-08-13 21:58 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  56. 2026-08-12 13:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  57. 2026-08-11 13:40 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  58. 2026-08-09 13:45 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  59. 2026-08-08 16:35 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  60. 2026-08-06 13:45 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  65. 2026-08-02 02:25 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  66. 2026-08-01 08:06 UTCOSV refresh
  67. 2026-08-01 04:14 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  68. 2026-07-30 16:26 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  69. 2026-07-30 01:29 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  70. 2026-07-28 15:34 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  72. 2026-07-26 14:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2024-26703?
CVE-2024-26703 is a medium-severity vulnerability; its CVE record was published on April 3, 2024. In the Linux kernel, the following vulnerability has been resolved: tracing/timerlat: Move hrtimer_init to timerlat_fd open() Currently, the timerlat's hrtimer is initialized at the first read of timerlat_fd, and destroyed at close(). It works, but it causes an error if the user program open() and…
When was the CVE record for CVE-2024-26703 published?
The CVE record for CVE-2024-26703 was published on April 3, 2024. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of February 27, 2025; the record at its source may have been updated since.
Is CVE-2024-26703 actively exploited?
CVE-2024-26703 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-26703?
CVE-2024-26703 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2024-26703?
A fix for CVE-2024-26703 is available: update to the fixed version the vendor names in its advisory.

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