Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2024-26783: mm/vmscan: fix a bug calling wakeup_kswapd() with a wrong zone index

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.24% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 2774f256e7c0219e2b0a0894af1c76bdabc4f974, bdd21eed8b72f9e28d6c279f6db258e090c79080, d6159bd4c00594249e305bfe02304c67c506264e.
  • Mentioned 2 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 2774f256e7c0219e2b0a0894af1c76bdabc4f974, bdd21eed8b72f9e28d6c279f6db258e090c79080, d6159bd4c00594249e305bfe02304c67c506264e or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: mm/vmscan: fix a bug calling wakeup_kswapd() with a wrong zone index With numa balancing on, when a numa system is running where a numa node doesn't have its local memory so it has no managed zones, the following oops has been observed. It's because wakeup_kswapd() is called with a wrong zone index, -1. Fixed it by checking the index before calling wakeup_kswapd(). > BUG: unable to handle page fault for address: 00000000000033f3 > #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: 2 PID: 895 Comm: masim Not tainted 6.6.0-dirty #255 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS > rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 > RIP: 0010:wakeup_kswapd (./linux/mm/vmscan.c:7812) > Code: (omitted) > RSP: 0000:ffffc90004257d58 EFLAGS: 00010286 > RAX: ffffffffffffffff RBX: ffff88883fff0480 RCX: 0000000000000003 > RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88883fff0480 > RBP: ffffffffffffffff R08: ff0003ffffffffff R09: ffffffffffffffff > R10: ffff888106c95540 R11: 0000000055555554 R12: 0000000000000003 > R13: 0000000000000000 R14: 0000000000000000 R15: ffff88883fff0940 > FS: 00007fc4b8124740(0000) GS:ffff888827c00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00000000000033f3 CR3: 000000026cc08004 CR4: 0000000000770ee0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > PKRU: 55555554 > Call Trace: > <TASK> > ? __die > ? page_fault_oops > ? __pte_offset_map_lock > ? exc_page_fault > ? asm_exc_page_fault > ? wakeup_kswapd > migrate_misplaced_page > __handle_mm_fault > handle_mm_fault > do_user_addr_fault > exc_page_fault > asm_exc_page_fault > RIP: 0033:0x55b897ba0808 > Code: (omitted) > RSP: 002b:00007ffeefa821a0 EFLAGS: 00010287 > RAX: 000055b89983acd0 RBX: 00007ffeefa823f8 RCX: 000055b89983acd0 > RDX: 00007fc2f8122010 RSI: 0000000000020000 RDI: 000055b89983acd0 > RBP: 00007ffeefa821a0 R08: 0000000000000037 R09: 0000000000000075 > R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 > R13: 00007ffeefa82410 R14: 000055b897ba5dd8 R15: 00007fc4b8340000 > </TASK>

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Apr 4, 2024
Updated
Nov 10, 2026
EPSS
0.2% · 15th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-26783

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records
Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.18 and later · before 6.6.22
  • linux linux kernel6.7 and later · before 6.7.9
  • linux linux kernel6.8

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.18affected
    • c574bbe917036c8968b984c82c7b13194fe5ce98 and later · before e5ec1c24e71dbf144677a975d6ba91043c2193dbaffected · git
    • c574bbe917036c8968b984c82c7b13194fe5ce98 and later · before d6159bd4c00594249e305bfe02304c67c506264eaffected · git
    • c574bbe917036c8968b984c82c7b13194fe5ce98 and later · before bdd21eed8b72f9e28d6c279f6db258e090c79080affected · git
    • c574bbe917036c8968b984c82c7b13194fe5ce98 and later · before 2774f256e7c0219e2b0a0894af1c76bdabc4f974affected · git
    • before 5.18not affected · semver
    • 6.1.140 and later · up to and including 6.1.*not affected · semver
    • 6.6.22 and later · up to and including 6.6.*not affected · semver
    • 6.7.9 and later · up to and including 6.7.*not affected · semver
    • 6.8 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:9bpftoolbefore 7.3.0-427.26.1.el9_47.3.0-427.26.1.el9_4
AlmaLinux:9kernelbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64kbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-corebefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debugbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-develbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-corebefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-cross-headersbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-debugbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-debug-corebefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-debug-develbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe…KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-26808Apr 4, 2024 · netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain
    31Monitor
  • ← EarlierCVE-2024-26809Apr 4, 2024 · netfilter: nft_set_pipapo: release elements in clone only from destroy path
    22Monitor
  • Later →CVE-2024-26787Apr 4, 2024 · mmc: mmci: stm32: fix DMA API overlapping mappings warning
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux2774f256e7c0219e2b0a0894af1c76bdabc4f974Vendor (CNA)
Linux Linuxbdd21eed8b72f9e28d6c279f6db258e090c79080Vendor (CNA)
Linux Linuxd6159bd4c00594249e305bfe02304c67c506264eVendor (CNA)
Linux Linuxe5ec1c24e71dbf144677a975d6ba91043c2193dbVendor (CNA)
almalinux:bpftool7.3.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.140-1 · Debian:12Package registry (OSV)
debian:linux-6.16.1.140-1~deb11u1 · Debian:11Package registry (OSV)
red hat:bpftool-debuginfo0:7.0.0-284.73.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-284.73.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-284.73.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-284.73.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-284.73.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-284.73.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-284.73.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-284.73.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-284.73.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-284.73.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-284.73.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-284.73.1.el9_2 · Red Hat:rhel_eus:9.2::appstreamPackage registry (OSV)

+1

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records