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NVD / CVE Program· CNA Linux

CVE-2024-39475: fbdev: savage: Handle err return when savagefb_check_var failed

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: 0.22% (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 32f92b0078ebf79dbe4827288e0acb50d89d3d5b, 4.19.316, 4b2c67e30b4e1d2ae19dba8b8e8f3b5fd3cf8089; azl3 kernel 6.6.22.1-2 on Azure Linux 3.0 6.6.35.1-5; azl3 kernel 6.6.35.1-5 on Azure Linux 3.0 -.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 32f92b0078ebf79dbe4827288e0acb50d89d3d5b, 4.19.316, 4b2c67e30b4e1d2ae19dba8b8e8f3b5fd3cf8089; azl3 kernel 6.6.22.1-2 on Azure Linux 3.0 6.6.35.1-5; azl3 kernel 6.6.35.1-5 on Azure Linux 3.0 - 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: fbdev: savage: Handle err return when savagefb_check_var failed The commit 04e5eac8f3ab("fbdev: savage: Error out if pixclock equals zero") checks the value of pixclock to avoid divide-by-zero error. However the function savagefb_probe doesn't handle the error return of savagefb_check_var. When pixclock is 0, it will cause divide-by-zero error.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 5, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 13th percentile

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.

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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

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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 kernel4.19 and later · before 4.19.316
  • linux linux kernel5.4 and later · before 5.4.278
  • linux linux kernel5.10 and later · before 5.10.219
  • linux linux kernel5.15 and later · before 5.15.161
  • linux linux kernel6.1 and later · before 6.1.94
  • linux linux kernel6.6 and later · before 6.6.34
  • linux linux kernel6.9 and later · before 6.9.5

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

    • a9ca4e80d23474f90841251f4ac0d941fa337a01, 6.8affected
    • 224453de8505aede1890f007be973925a3edf6a1 and later · before be754cbd77eaf2932408a4e18532e4945274a5c7affected · git
    • 84dce0f6a4cc5b7bfd7242ef9290db8ac1dd77ff and later · before 86435f39c18967cdd937d7a49ba539cdea7fb547affected · git
    • 512ee6d6041e007ef5bf200c6e388e172a2c5b24 and later · before 32f92b0078ebf79dbe4827288e0acb50d89d3d5baffected · git
    • 8c54acf33e5adaad6374bf3ec1e3aff0591cc8e1 and later · before 4b2c67e30b4e1d2ae19dba8b8e8f3b5fd3cf8089affected · git
    • 070398d32c5f3ab0e890374904ad94551c76aec4 and later · before edaa57480b876e8203b51df7c3d14a51ea6b09e3affected · git
    • bc3c2e58d73b28b9a8789fca84778ee165a72d13 and later · before b8385ff814ca4cb7e63789841e6ec2a14c73e1e8affected · git
    • 04e5eac8f3ab2ff52fa191c187a46d4fdbc1e288 and later · before 5f446859bfa46df0ffb34149499f48a2c2d8cd95affected · git
    • 04e5eac8f3ab2ff52fa191c187a46d4fdbc1e288 and later · before 6ad959b6703e2c4c5d7af03b4cfd5ff608036339affected · git
    • 4.19.308 and later · before 4.19.316affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.94-16.1.94-1
Debian:13linuxbefore 6.9.7-16.9.7-1

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-2024-39473Jul 5, 2024 · ASoC: SOF: ipc4-topology: Fix input format query of process modules without base extension
    22Monitor
  • ← EarlierCVE-2024-39474Jul 5, 2024 · mm/vmalloc: fix vmalloc which may return null if called with __GFP_NOFAIL
    22Monitor
  • Later →CVE-2024-39476Jul 5, 2024 · md/raid5: fix deadlock that raid5d() wait for itself to clear MD_SB_CHANGE_PENDING
    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 Linux32f92b0078ebf79dbe4827288e0acb50d89d3d5bVendor (CNA)
Linux Linux4.19.316Vendor (CNA)
Linux Linux4b2c67e30b4e1d2ae19dba8b8e8f3b5fd3cf8089Vendor (CNA)
Linux Linux5.10.219Vendor (CNA)
Linux Linux5.15.161Vendor (CNA)
Linux Linux5.4.278Vendor (CNA)
Linux Linux5f446859bfa46df0ffb34149499f48a2c2d8cd95Vendor (CNA)
Linux Linux6.1.94Vendor (CNA)
Linux Linux6.6.34Vendor (CNA)
Linux Linux6.8Vendor (CNA)
Linux Linux6ad959b6703e2c4c5d7af03b4cfd5ff608036339Vendor (CNA)
Linux Linux86435f39c18967cdd937d7a49ba539cdea7fb547Vendor (CNA)
Linux Linuxb8385ff814ca4cb7e63789841e6ec2a14c73e1e8Vendor (CNA)
Linux Linuxbe754cbd77eaf2932408a4e18532e4945274a5c7Vendor (CNA)
Linux Linuxedaa57480b876e8203b51df7c3d14a51ea6b09e3Vendor (CNA)
azl3 kernel 6.6.22.1-2 on Azure Linux 3.06.6.35.1-5 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 kernel 6.6.35.1-5 on Azure Linux 3.0- · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.160.1-1 on CBL Mariner 2.05.15.162.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.162.2-1 on CBL Mariner 2.05.15.162.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.94-1 · Debian:12Package registry (OSV)

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.

  • CVE-2024-2694565 days apartcrypto: iaa - Fix nr_cpus < nr_iaa case
    33Monitor
  • CVE-2021-4758416 days apartiocost: Fix divide-by-zero on donation from low hweight cgroup
    22Monitor
  • CVE-2021-4760616 days apartnet: netlink: af_netlink: Prevent empty skb by adding a check on len.
    22Monitor
  • CVE-2024-3696927 days apartdrm/amd/display: Fix division by zero in setup_dsc_config
    22Monitor
  • CVE-2024-3690536 days aparttcp: defer shutdown(SEND_SHUTDOWN) for TCP_SYN_RECV sockets
    22Monitor
  • CVE-2024-4231643 days apartmm/mglru: fix div-by-zero in vmpressure_calc_level()
    22Monitor

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)

CWE-369 · Divide By Zero

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 (7 more)

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

All records