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NVD / CVE Program· CNA Linux

CVE-2024-27393: xen-netfront: Add missing skb_mark_for_recycle

Noroxi assessment

Priority: Monitor (action score 30/100)

  • 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: 0.77% (FIRST EPSS); higher than 55.9% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 037965402a010898d34f4e35327d22c0a95cd51f, 27aa3e4b3088426b7e34584274ad45b5afaf7629, 4143b9479caa29bb2380f3620dcbe16ea84eb3b1; azl3 hyperv-daemons 6.6.22.1-2 on Azure Linux 3.0 6.6.35.1-1; azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.0 6.6.35.1-1.

Low priority for now. Upgrade to Linux Linux 037965402a010898d34f4e35327d22c0a95cd51f, 27aa3e4b3088426b7e34584274ad45b5afaf7629, 4143b9479caa29bb2380f3620dcbe16ea84eb3b1; azl3 hyperv-daemons 6.6.22.1-2 on Azure Linux 3.0 6.6.35.1-1; azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.0 6.6.35.1-1 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: xen-netfront: Add missing skb_mark_for_recycle Notice that skb_mark_for_recycle() is introduced later than fixes tag in commit 6a5bcd84e886 ("page_pool: Allow drivers to hint on SKB recycling"). It is believed that fixes tag were missing a call to page_pool_release_page() between v5.9 to v5.14, after which is should have used skb_mark_for_recycle(). Since v6.6 the call page_pool_release_page() were removed (in commit 535b9c61bdef ("net: page_pool: hide page_pool_release_page()") and remaining callers converted (in commit 6bfef2ec0172 ("Merge branch 'net-page_pool-remove-page_pool_release_page'")). This leak became visible in v6.8 via commit dba1b8a7ab68 ("mm/page_pool: catch page_pool memory leaks").

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
May 14, 2024
Updated
Aug 5, 2026
EPSS
0.7% · 55th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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

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Follow CVE-2024-27393

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
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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.

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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 kernel5.9 and later · before 5.15.154
  • linux linux kernel5.16 and later · before 6.1.85
  • linux linux kernel6.2 and later · before 6.6.26
  • linux linux kernel6.7 and later · before 6.8.5
  • linux linux kernel6.9

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

    • 5.9affected
    • 6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c and later · before 4143b9479caa29bb2380f3620dcbe16ea84eb3b1affected · git
    • 6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c and later · before 7c1250796b6c262b505a46192f4716b8c6a6a8c6affected · git
    • 6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c and later · before 27aa3e4b3088426b7e34584274ad45b5afaf7629affected · git
    • 6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c and later · before c8b7b2f158d9d4fb89cd2f68244af154f7549bb4affected · git
    • 6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c and later · before 037965402a010898d34f4e35327d22c0a95cd51faffected · git
    • before 5.9not affected · semver
    • 5.15.154 and later · up to and including 5.15.*not affected · semver
    • 6.1.85 and later · up to and including 6.1.*not affected · semver
    • 6.6.26 and later · up to and including 6.6.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:9bpftoolbefore 7.3.0-427.24.1.el9_47.3.0-427.24.1.el9_4
AlmaLinux:9kernelbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64kbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-corebefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-debugbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-develbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-corebefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-cross-headersbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-debugbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-debug-corebefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-debug-develbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.el9_4
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-427.24.1.el9_45.14.0-427.24.1.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-2023-52655May 14, 2024 · usb: aqc111: check packet for fixup for true limit
    22Monitor
  • ← EarlierCVE-2023-52656May 14, 2024 · io_uring: drop any code related to SCM_RIGHTS
    22Monitor
  • Later →CVE-2024-27394May 14, 2024 · tcp: Fix Use-After-Free in tcp_ao_connect_init
    31Monitor

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 Linux037965402a010898d34f4e35327d22c0a95cd51fVendor (CNA)
Linux Linux27aa3e4b3088426b7e34584274ad45b5afaf7629Vendor (CNA)
Linux Linux4143b9479caa29bb2380f3620dcbe16ea84eb3b1Vendor (CNA)
Linux Linux7c1250796b6c262b505a46192f4716b8c6a6a8c6Vendor (CNA)
Linux Linuxc8b7b2f158d9d4fb89cd2f68244af154f7549bb4Vendor (CNA)
azl3 hyperv-daemons 6.6.22.1-2 on Azure Linux 3.06.6.35.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.06.6.35.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:bpftool7.3.0-427.24.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel5.14.0-427.24.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-427.24.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-427.24.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-427.24.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-427.24.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-427.24.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-427.24.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-427.24.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-427.24.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-427.24.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-427.24.1.el9_4 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.85-1 · Debian:12Package registry (OSV)
red hat:kernel-rt0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-core0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-core0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-debuginfo0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-devel0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-kvm0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules-core0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules-extra0:5.14.0-284.71.1.rt14.356.el9_2 · Red Hat:rhel_eus:9.2::nfvPackage registry (OSV)

+3

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).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • 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
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

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

nvd-secondary

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