CVE-2026-80958

HIGHPre-NVD 7.17.1
EchelonGraph scoreMEDIUM confidence

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

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-11. A secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

dm-pcache: clamp the tail kset read to the segment data region

The tail-kset read in cache_replay(), the writeback worker and the GC worker bounds its length by PCACHE_SEG_SIZE - seg_off, the raw segment size rather than the data region. A tail near the segment end reads past the segment data into the following control area.

Clamp the read to cache_seg_remain(), the data region.

CVSS v3
7.1
EG Score
7.1HIGHmedium confidence
EG Risk
32
EG Risk 32/100

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 (value × EchelonGraph’s weight)
Severity71% × 45%
The EG Score, 7.1 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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
5th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” 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

September 11, 2026

Last Modified

September 13, 2026

Advisory Details (3)

Auto-updated Sep 13, 2026
Patch available.
Web page

dm-pcache: clamp the tail kset read to the segment data region - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/becf07e2b0053027495ecd671b1f82fb2e615f68
Web page

dm-pcache: clamp the tail kset read to the segment data region - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2cd9776fe3f2d88ec22c36d3c8ba09fbf9d5500c
Web page

dm-pcache: clamp the tail kset read to the segment data region - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1ab55354368d071ebaee4d8c82313955eab65a04

Vendor Advisories for CVE-2026-80958(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (178 versions)
  • every version up to 7.2.6-1: fixed in 7.2.6-1
—

Data Freshness Timeline

(refreshed 25× in last 7d / 109× 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 99 of 120 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 21 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-10-13 06:23 UTCEG score recompute
  3. 2026-10-13 06:23 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  4. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-10-12 14:57 UTCEG score recompute
  6. 2026-10-11 22:31 UTCEG score recompute
  7. 2026-10-11 22:31 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  8. 2026-10-11 19:21 UTCEG score recompute
  9. 2026-10-11 16:37 UTCEG score recompute
  10. 2026-10-11 13:55 UTCEG score recompute
  11. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-10-11 10:02 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  13. 2026-10-10 20:30 UTCEG score recompute
  14. 2026-10-10 20:30 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  15. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-10-10 08:00 UTCEG score recompute
  17. 2026-10-10 08:00 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  18. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-09 19:27 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  20. 2026-10-09 01:02 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  21. 2026-10-08 12:36 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  22. 2026-10-07 23:51 UTCEG score recompute
  23. 2026-10-07 23:51 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  24. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  25. 2026-10-07 11:23 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
Show 74 more
  1. 2026-10-06 22:54 UTCEG score recompute
  2. 2026-10-06 22:54 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  3. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  4. 2026-10-06 10:28 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  5. 2026-10-05 22:02 UTCEG score recompute
  6. 2026-10-05 22:02 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  7. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  8. 2026-10-05 08:58 UTCEG score recompute
  9. 2026-10-05 08:58 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  10. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  11. 2026-10-04 20:26 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  12. 2026-10-04 07:36 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  13. 2026-10-03 19:10 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  14. 2026-10-03 06:45 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  15. 2026-10-02 18:18 UTCEG score recompute
  16. 2026-10-02 18:18 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  17. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-02 05:46 UTCEG score recompute
  19. 2026-10-02 05:46 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  20. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-10-01 15:37 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  22. 2026-10-01 03:12 UTCEG score recompute
  23. 2026-10-01 03:11 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  24. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  25. 2026-09-30 14:46 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  26. 2026-09-30 01:47 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  27. 2026-09-29 12:36 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  28. 2026-09-29 00:11 UTCEG score recompute
  29. 2026-09-29 00:10 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  30. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  31. 2026-09-28 11:44 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  32. 2026-09-27 23:17 UTCEG score recompute
  33. 2026-09-27 23:17 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  34. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  35. 2026-09-27 10:50 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  36. 2026-09-26 22:05 UTCEG score recompute
  37. 2026-09-26 22:05 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  38. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  39. 2026-09-26 09:40 UTCEG score recompute
  40. 2026-09-26 09:39 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  41. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  42. 2026-09-25 21:07 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  43. 2026-09-25 06:41 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  44. 2026-09-24 18:15 UTCEG score recompute
  45. 2026-09-24 18:15 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  46. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  47. 2026-09-24 05:09 UTCEG score recompute
  48. 2026-09-24 05:09 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  49. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  50. 2026-09-23 16:42 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  51. 2026-09-23 04:17 UTCEG score recompute
  52. 2026-09-23 04:17 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  53. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  54. 2026-09-22 15:51 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  55. 2026-09-22 03:26 UTCEG score recompute
  56. 2026-09-22 03:25 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  57. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  58. 2026-09-21 14:59 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  59. 2026-09-21 02:30 UTCEG score recompute
  60. 2026-09-21 02:29 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  61. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  62. 2026-09-20 14:02 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  63. 2026-09-20 01:36 UTCEG score recompute
  64. 2026-09-20 01:36 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  65. 2026-09-19 13:10 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  66. 2026-09-19 00:44 UTCEG score recompute
  67. 2026-09-19 00:44 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  68. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  69. 2026-09-18 12:19 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  70. 2026-09-17 23:53 UTCEG score recompute
  71. 2026-09-17 23:53 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  72. 2026-09-17 10:53 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1
  73. 2026-09-16 22:27 UTCEG score recompute
  74. 2026-09-16 22:27 UTCGHSA enrichmentGHSA-hh69-ghmv-95j7 · GitHub severity HIGH · GitHub CVSS 7.1

Frequently asked(5)

What is CVE-2026-80958?
CVE-2026-80958 is a high-severity vulnerability; its CVE record was published on September 11, 2026. In the Linux kernel, the following vulnerability has been resolved: dm-pcache: clamp the tail kset read to the segment data region The tail-kset read in cache_replay(), the writeback worker and the GC worker bounds its length by PCACHESEGSIZE - seg_off, the raw segment size rather than the data…
When was the CVE record for CVE-2026-80958 published?
The CVE record for CVE-2026-80958 was published on September 11, 2026. 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 September 13, 2026; the record at its source may have been updated since.
Is CVE-2026-80958 actively exploited?
CVE-2026-80958 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-80958?
CVE-2026-80958 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-80958?
A fix for CVE-2026-80958 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-80958 are linked in the Vendor Advisories panel on this page.

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