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NVD / CVE Program· CNA Linux

CVE-2024-49994: block: fix integer overflow in BLKSECDISCARD

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 0842ddd83939eb4db940b9af7d39e79722bc41aa, 697ba0b6ec4ae04afb67d3911799b5e2043b4455, 6c9915fa9410cbb9bd75ee283c03120046c56d3d; azl3 kernel 6.6.76.1-1 on Azure Linux 3.0 6.6.76.1-1; azl3 kernel 6.6.92.2-1 on Azure Linux 3.0 6.6.76.1-1.

Low priority for now. Upgrade to Linux Linux 0842ddd83939eb4db940b9af7d39e79722bc41aa, 697ba0b6ec4ae04afb67d3911799b5e2043b4455, 6c9915fa9410cbb9bd75ee283c03120046c56d3d; azl3 kernel 6.6.76.1-1 on Azure Linux 3.0 6.6.76.1-1; azl3 kernel 6.6.92.2-1 on Azure Linux 3.0 6.6.76.1-1 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: block: fix integer overflow in BLKSECDISCARD I independently rediscovered commit 22d24a544b0d49bbcbd61c8c0eaf77d3c9297155 block: fix overflow in blk_ioctl_discard() but for secure erase. Same problem: uint64_t r[2] = {512, 18446744073709551104ULL}; ioctl(fd, BLKSECDISCARD, r); will enter near infinite loop inside blkdev_issue_secure_erase(): a.out: attempt to access beyond end of device loop0: rw=5, sector=3399043073, nr_sectors = 1024 limit=2048 bio_check_eod: 3286214 callbacks suppressed

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 21, 2024
Updated
Nov 10, 2026
EPSS
0.2% · 15th 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-2024-49994

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 kernelbefore 6.10.14
  • linux linux kernel6.11 and later · before 6.11.3

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

    • 5.19affected
    • 44abff2c0b970ae3d310b97617525dc01f248d7c and later · before 8476f8428e8b48fd7a0e4258fa2a96a8f4468239affected · git
    • 44abff2c0b970ae3d310b97617525dc01f248d7c and later · before a99bacb35c1416355eef957560e8fcac3a665549affected · git
    • 44abff2c0b970ae3d310b97617525dc01f248d7c and later · before 0842ddd83939eb4db940b9af7d39e79722bc41aaaffected · git
    • 44abff2c0b970ae3d310b97617525dc01f248d7c and later · before 6c9915fa9410cbb9bd75ee283c03120046c56d3daffected · git
    • 44abff2c0b970ae3d310b97617525dc01f248d7c and later · before 697ba0b6ec4ae04afb67d3911799b5e2043b4455affected · git
    • before 5.19not affected · semver
    • 6.1.128 and later · up to and including 6.1.*not affected · semver
    • 6.6.75 and later · up to and including 6.6.*not affected · semver
    • 6.10.14 and later · up to and including 6.10.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.128-16.1.128-1
Debian:13linuxbefore 6.11.4-16.11.4-1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7_Update_1before 1-150700.15.3.11-150700.15.3.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7kernel-64kbbefore 6.4.0-150700.53.3.16.4.0-150700.53.3.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7kernel-defaultbefore 6.4.0-150700.53.3.16.4.0-150700.53.3.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7kernel-default-basebefore 6.4.0-150700.53.3.1.150700.17.2.16.4.0-150700.53.3.1.150700.17.2.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7kernel-sourcebefore 6.4.0-150700.53.3.16.4.0-150700.53.3.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7kernel-zfcpdumpbefore 6.4.0-150700.53.3.16.4.0-150700.53.3.1
SUSE:Linux Enterprise Module for Development Tools 15 SP7kernel-docsbefore 6.4.0-150700.53.3.16.4.0-150700.53.3.1
SUSE:Linux Enterprise Module for Development Tools 15 SP7kernel-obs-buildbefore 6.4.0-150700.53.3.16.4.0-150700.53.3.1
SUSE:Linux Enterprise Module for Development Tools 15 SP7kernel-symsbefore 6.4.0-150700.53.3.16.4.0-150700.53.3.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP7kernel-azurebefore 6.4.0-150700.20.3.16.4.0-150700.20.3.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP7kernel-source-azurebefore 6.4.0-150700.20.3.16.4.0-150700.20.3.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP7kernel-syms-azurebefore 6.4.0-150700.20.3.16.4.0-150700.20.3.1

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-2024-49977Oct 21, 2024 · net: stmmac: Fix zero-division error when disabling tc cbs
    22Monitor
  • ← EarlierCVE-2024-49982Oct 21, 2024 · aoe: fix the potential use-after-free problem in more places
    31Monitor
  • Later →CVE-2024-49997Oct 21, 2024 · net: ethernet: lantiq_etop: fix memory disclosure
    30Monitor

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 Linux0842ddd83939eb4db940b9af7d39e79722bc41aaVendor (CNA)
Linux Linux697ba0b6ec4ae04afb67d3911799b5e2043b4455Vendor (CNA)
Linux Linux6c9915fa9410cbb9bd75ee283c03120046c56d3dVendor (CNA)
Linux Linux8476f8428e8b48fd7a0e4258fa2a96a8f4468239Vendor (CNA)
Linux Linuxa99bacb35c1416355eef957560e8fcac3a665549Vendor (CNA)
azl3 kernel 6.6.76.1-1 on Azure Linux 3.06.6.76.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 kernel 6.6.92.2-1 on Azure Linux 3.06.6.76.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.128-1 · Debian:12Package registry (OSV)
suse:kernel-64kb6.4.0-150700.53.3.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-azure6.4.0-150700.20.3.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP7Package registry (OSV)
suse:kernel-default6.4.0-150700.53.3.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-default-base6.4.0-150700.53.3.1.150700.17.2.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-docs6.4.0-150700.53.3.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:kernel-livepatch-SLE15-SP7_Update_11-150700.15.3.1 · SUSE:Linux Enterprise Live Patching 15 SP7Package registry (OSV)
suse:kernel-obs-build6.4.0-150700.53.3.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:kernel-source6.4.0-150700.53.3.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-source-azure6.4.0-150700.20.3.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP7Package registry (OSV)
suse:kernel-syms6.4.0-150700.53.3.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:kernel-syms-azure6.4.0-150700.20.3.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP7Package registry (OSV)
suse:kernel-zfcpdump6.4.0-150700.53.3.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package 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-2026-23457529 days apartnetfilter: nf_conntrack_sip: fix Content-Length u32 truncation in sip_help_tcp()
    34Monitor
  • CVE-2022-490300 days apartlibbpf: Handle size overflow for ringbuf mmap
    31Monitor
  • CVE-2024-4213683 days apartcdrom: rearrange last_media_change check to avoid unintentional overflow
    31Monitor
  • CVE-2022-4883797 days apartusb: gadget: rndis: prevent integer overflow in rndis_set_response()
    31Monitor
  • CVE-2024-40994101 days apartptp: fix integer overflow in max_vclocks_store
    31Monitor
  • CVE-2024-41000101 days apartblock/ioctl: prefer different overflow check
    31Monitor

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

  • 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-190 · Integer Overflow or Wraparound

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.

ATT&CK techniques

—

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