CVE-2024-42241

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 2024-08-07. NVD baseline CVSS 5.5; sources differ by 0.0.

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

mm/shmem: disable PMD-sized page cache if needed

For shmem files, it's possible that PMD-sized page cache can't be supported by xarray. For example, 512MB page cache on ARM64 when the base page size is 64KB can't be supported by xarray. It leads to errors as the following messages indicate when this sort of xarray entry is split.

WARNING: CPU: 34 PID: 7578 at lib/xarray.c:1025 xas_split_alloc+0xf8/0x128 Modules linked in: binfmt_misc nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 \ nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject \ nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 \ ip_set rfkill nf_tables nfnetlink vfat fat virtio_balloon drm fuse xfs \ libcrc32c crct10dif_ce ghash_ce sha2_ce sha256_arm64 sha1_ce virtio_net \ net_failover virtio_console virtio_blk failover dimlib virtio_mmio CPU: 34 PID: 7578 Comm: test Kdump: loaded Tainted: G W 6.10.0-rc5-gavin+ #9 Hardware name: QEMU KVM Virtual Machine, BIOS edk2-20240524-1.el9 05/24/2024 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : xas_split_alloc+0xf8/0x128 lr : split_huge_page_to_list_to_order+0x1c4/0x720 sp : ffff8000882af5f0 x29: ffff8000882af5f0 x28: ffff8000882af650 x27: ffff8000882af768 x26: 0000000000000cc0 x25: 000000000000000d x24: ffff00010625b858 x23: ffff8000882af650 x22: ffffffdfc0900000 x21: 0000000000000000 x20: 0000000000000000 x19: ffffffdfc0900000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000018000000000 x15: 52f8004000000000 x14: 0000e00000000000 x13: 0000000000002000 x12: 0000000000000020 x11: 52f8000000000000 x10: 52f8e1c0ffff6000 x9 : ffffbeb9619a681c x8 : 0000000000000003 x7 : 0000000000000000 x6 : ffff00010b02ddb0 x5 : ffffbeb96395e378 x4 : 0000000000000000 x3 : 0000000000000cc0 x2 : 000000000000000d x1 : 000000000000000c x0 : 0000000000000000 Call trace: xas_split_alloc+0xf8/0x128 split_huge_page_to_list_to_order+0x1c4/0x720 truncate_inode_partial_folio+0xdc/0x160 shmem_undo_range+0x2bc/0x6a8 shmem_fallocate+0x134/0x430 vfs_fallocate+0x124/0x2e8 ksys_fallocate+0x4c/0xa0 __arm64_sys_fallocate+0x24/0x38 invoke_syscall.constprop.0+0x7c/0xd8 do_el0_svc+0xb4/0xd0 el0_svc+0x44/0x1d8 el0t_64_sync_handler+0x134/0x150 el0t_64_sync+0x17c/0x180

Fix it by disabling PMD-sized page cache when HPAGE_PMD_ORDER is larger than MAX_PAGECACHE_ORDER. As Matthew Wilcox pointed, the page cache in a shmem file isn't represented by a multi-index entry and doesn't have this limitation when the xarry entry is split until commit 6b24ca4a1a8d ("mm: Use multi-index entries in the page cache").

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
10th
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 2026-10-17). 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: 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.

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

August 7, 2024

Last Modified

August 8, 2024

References (3)

Vendor Advisories for CVE-2024-42241(4)

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

Patch Availability(14)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-azure-edge (6.8.0-1017.20~22.04.1) @ jammy2026-05-23ubuntu
ubuntulinux-tools-oracle-64k (6.8.0-1015.16) @ noble2026-05-23ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k (6.8.0-1017.19.1) @ noble2026-05-23ubuntu
ubuntulinux-tools-gke (6.8.0-1013.17) @ noble2026-05-23ubuntu
ubuntulinux-tools-gkeop-6.8 (6.8.0-1002.4) @ noble2026-05-23ubuntu
ubuntulinux-tools-lowlatency-hwe-24.04-edge (6.8.0-48.48.3) @ noble2026-05-23ubuntu
ubuntulinux-tools-raspi (6.8.0-1014.16) @ noble2026-05-23ubuntu
ubuntulinux-tools-oem-24.04a (6.8.0-1016.16) @ noble2026-05-23ubuntu
ubuntulinux-tools-ibm-lts-24.04 (6.8.0-1014.14) @ noble2026-05-23ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.8.0-48.48) @ noble2026-05-23ubuntu
redhatkernel-0:5.14.0-427.47.1.el9_42024-12-04redhat
redhatkernel-rt-0:5.14.0-284.84.1.rt14.369.el9_22024-09-18redhat
redhatkernel-0:5.14.0-284.84.1.el9_22024-09-18redhat
linuxKernel @ 6.6.41 (fixes >=5.17.0)—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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (353 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.9.10-1: fixed in 6.9.10-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.9.10-1: fixed in 6.9.10-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(10)

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 8× in last 7d / 34× 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 95 of 195 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. 5 repeat rows among the latest 100 are merged into the row they repeat. The 100 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.2% · 10th percentile
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  7. 2026-10-18 07:05 UTCEG score recompute
  8. 2026-10-17 16:31 UTCEPSS rescoreEPSS 0.2% · 10th percentile
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  13. 2026-10-12 17:47 UTCEG score recompute
  14. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  15. 2026-10-11 21:13 UTCEG score recompute
  16. 2026-10-11 16:05 UTCEG score recompute
  17. 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  18. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  19. 2026-10-10 03:03 UTCOSV refresh
  20. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.2% · 10th percentile
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  1. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  2. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  3. 2026-09-30 19:51 UTCEG score recompute
  4. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  5. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  6. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  7. 2026-09-27 13:44 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  8. 2026-09-26 15:57 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  9. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  10. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  11. 2026-09-22 14:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  12. 2026-09-21 20:32 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  13. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  14. 2026-09-20 12:44 UTCOSV refresh
  15. 2026-09-19 15:40 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  16. 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.2% · 11th percentile
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  30. 2026-09-02 14:10 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  31. 2026-09-01 14:14 UTCOSV refresh
  32. 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.2% · 11th percentile
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  40. 2026-08-20 22:54 UTCEPSS rescoreEPSS 0.2% · 11th percentile
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  45. 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  46. 2026-08-15 14:07 UTCOSV refresh
  47. 2026-08-15 01:28 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  48. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.2% · 11th percentile
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  62. 2026-07-31 04:16 UTCOSV refresh
  63. 2026-07-30 16:26 UTCEPSS rescoreEPSS 0.2% · 11th percentile
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  65. 2026-07-28 15:34 UTCEPSS rescoreEPSS 0.2% · 11th percentile
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2024-42241?
CVE-2024-42241 is a medium-severity vulnerability; its CVE record was published on August 7, 2024. In the Linux kernel, the following vulnerability has been resolved: mm/shmem: disable PMD-sized page cache if needed For shmem files, it's possible that PMD-sized page cache can't be supported by xarray. For example, 512MB page cache on ARM64 when the base page size is 64KB can't be supported by…
When was the CVE record for CVE-2024-42241 published?
The CVE record for CVE-2024-42241 was published on August 7, 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 August 8, 2024; the record at its source may have been updated since.
Is CVE-2024-42241 actively exploited?
CVE-2024-42241 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (10th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-42241?
CVE-2024-42241 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2024-42241?
A fix for CVE-2024-42241 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2024-42241 are linked in the Vendor Advisories panel on this page.

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