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NVD / CVE Program· CNA Linux

CVE-2024-39489: ipv6: sr: fix memleak in seg6_hmac_init_algo

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: 0.23% (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 0e44d6cbe8de983470c3d2f978649783384fdcb6, 4a3fcf53725b70010d1cf869a2ba549fed6b8fb3, 599a5654215092ac22bfc453f4fd3959c55ea821; 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 0e44d6cbe8de983470c3d2f978649783384fdcb6, 4a3fcf53725b70010d1cf869a2ba549fed6b8fb3, 599a5654215092ac22bfc453f4fd3959c55ea821; 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: ipv6: sr: fix memleak in seg6_hmac_init_algo seg6_hmac_init_algo returns without cleaning up the previous allocations if one fails, so it's going to leak all that memory and the crypto tfms. Update seg6_hmac_exit to only free the memory when allocated, so we can reuse the code directly.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 10, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 14th 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.

Follow CVE-2024-39489

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 kernel4.10 and later · before 4.19.316
  • linux linux kernel4.20 and later · before 5.4.278
  • linux linux kernel5.5 and later · before 5.10.219
  • linux linux kernel5.11 and later · before 5.15.161
  • linux linux kernel5.16 and later · before 6.1.93
  • linux linux kernel6.2 and later · before 6.6.33
  • linux linux kernel6.7 and later · before 6.9.4

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

    • 4.10affected
    • bf355b8d2c30a289232042cacc1cfaea4923936c and later · before afd5730969aec960a2fee4e5ee839a6014643976affected · git
    • bf355b8d2c30a289232042cacc1cfaea4923936c and later · before 4a3fcf53725b70010d1cf869a2ba549fed6b8fb3affected · git
    • bf355b8d2c30a289232042cacc1cfaea4923936c and later · before daf341e0a2318b813427d5a78788c86f4a7f02beaffected · git
    • bf355b8d2c30a289232042cacc1cfaea4923936c and later · before 61d31ac85b4572d11f8071855c0ccb4f32d76c0caffected · git
    • bf355b8d2c30a289232042cacc1cfaea4923936c and later · before 599a5654215092ac22bfc453f4fd3959c55ea821affected · git
    • bf355b8d2c30a289232042cacc1cfaea4923936c and later · before 0e44d6cbe8de983470c3d2f978649783384fdcb6affected · git
    • bf355b8d2c30a289232042cacc1cfaea4923936c and later · before f6a99ef4e056c20a138a95cc51332b2b96c8f383affected · git
    • bf355b8d2c30a289232042cacc1cfaea4923936c and later · before efb9f4f19f8e37fde43dfecebc80292d179f56c6affected · git
    • before 4.10not affected · 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-2024-39491Jul 10, 2024 · ALSA: hda: cs35l56: Fix lifetime of cs_dsp instance
    22Monitor
  • ← EarlierCVE-2024-39492Jul 10, 2024 · mailbox: mtk-cmdq: Fix pm_runtime_get_sync() warning in mbox shutdown
    28Monitor
  • Later →CVE-2024-39493Jul 10, 2024 · crypto: qat - Fix ADF_DEV_RESET_SYNC memory leak
    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 Linux0e44d6cbe8de983470c3d2f978649783384fdcb6Vendor (CNA)
Linux Linux4a3fcf53725b70010d1cf869a2ba549fed6b8fb3Vendor (CNA)
Linux Linux599a5654215092ac22bfc453f4fd3959c55ea821Vendor (CNA)
Linux Linux61d31ac85b4572d11f8071855c0ccb4f32d76c0cVendor (CNA)
Linux Linuxafd5730969aec960a2fee4e5ee839a6014643976Vendor (CNA)
Linux Linuxdaf341e0a2318b813427d5a78788c86f4a7f02beVendor (CNA)
Linux Linuxefb9f4f19f8e37fde43dfecebc80292d179f56c6Vendor (CNA)
Linux Linuxf6a99ef4e056c20a138a95cc51332b2b96c8f383Vendor (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 5.15.160.1-1 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.

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)

CWE-401 · Missing Release of Memory after Effective Lifetime

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 (10 more)

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

All records