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CVE-2024-46844· NVD / CVE Program· CNA Linux

um: line: always fill *error_out in setup_one_line()

In the Linux kernel, the following vulnerability has been resolved: um: line: always fill *error_out in setup_one_line() The pointer isn't initialized by callers, but I have encountered cases where it's still printed; initialize it in all possible cases in setup_one_line().

HighCVSS 7.8 · v3.1—No exploit Fix available

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Published
Sep 27, 2024
Updated
Aug 5, 2026
EPSS
0.3% · 16th percentile
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Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.8
CNA · Linux
7.1
0.7 point gap

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

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

Affected systems

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 4.19.322
  • linux linux kernel4.20 and later · before 5.4.284
  • linux linux kernel5.5 and later · before 5.10.226
  • linux linux kernel5.11 and later · before 5.15.167
  • linux linux kernel5.16 and later · before 6.1.110
  • linux linux kernel6.2 and later · before 6.6.51
  • linux linux kernel6.7 and later · before 6.10.10

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

    • 3.4affected
    • 31efcebb7d7196adcee73027f513d7c0bf572b47 and later · before 3bedb7ce080690d0d6172db790790c1219bcbdd5affected · git
    • 31efcebb7d7196adcee73027f513d7c0bf572b47 and later · before 96301fdc2d533a196197c055af875fe33d47ef84affected · git
    • 31efcebb7d7196adcee73027f513d7c0bf572b47 and later · before c8944d449fda9f58c03bd99649b2df09948fc874affected · git
    • 31efcebb7d7196adcee73027f513d7c0bf572b47 and later · before 43f782c27907f306c664b6614fd6f264ac32cce6affected · git
    • 31efcebb7d7196adcee73027f513d7c0bf572b47 and later · before 289979d64573f43df1d0e6bc6435de63a0d69cdfaffected · git
    • 31efcebb7d7196adcee73027f513d7c0bf572b47 and later · before ec5b47a370177d79ae7773858042c107e21f8eccaffected · git
    • 31efcebb7d7196adcee73027f513d7c0bf572b47 and later · before fc843d3837ebcb1c16d3768ef3eb55e25d5331f2affected · git
    • 31efcebb7d7196adcee73027f513d7c0bf572b47 and later · before 824ac4a5edd3f7494ab1996826c4f47f8ef0f63daffected · git
    • before 3.4not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.112-16.1.112-1
Debian:13linuxbefore 6.10.11-16.10.11-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • 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
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now
  • CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV
    77This week
  • CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV
    77This week
  • CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV
    77This week

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 Linux289979d64573f43df1d0e6bc6435de63a0d69cdfVendor (CNA)
Linux Linux3bedb7ce080690d0d6172db790790c1219bcbdd5Vendor (CNA)
Linux Linux43f782c27907f306c664b6614fd6f264ac32cce6Vendor (CNA)
Linux Linux824ac4a5edd3f7494ab1996826c4f47f8ef0f63dVendor (CNA)
Linux Linux96301fdc2d533a196197c055af875fe33d47ef84Vendor (CNA)
Linux Linuxc8944d449fda9f58c03bd99649b2df09948fc874Vendor (CNA)
Linux Linuxec5b47a370177d79ae7773858042c107e21f8eccVendor (CNA)
Linux Linuxfc843d3837ebcb1c16d3768ef3eb55e25d5331f2Vendor (CNA)
debian:linux6.1.112-1 · 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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-2024-5008831 days apartbtrfs: fix uninitialized pointer free in add_inode_ref()
    31Monitor
  • CVE-2024-57943116 days apartexfat: fix the new buffer was not zeroed before writing
    31Monitor
  • CVE-2024-26799176 days apartASoC: qcom: Fix uninitialized pointer dmactl
    28Monitor
  • CVE-2024-4993824 days apartwifi: ath9k_htc: Use __skb_set_length() for resetting urb before resubmit
    22Monitor
  • CVE-2024-5008731 days apartbtrfs: fix uninitialized pointer free on read_alloc_one_name() error
    22Monitor
  • CVE-2024-4227541 days apartdrm/client: Fix error code in drm_client_buffer_vmap_local()
    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).

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

Weakness class (CWE)

CWE-824 · Access of Uninitialized Pointer

CVSS vector

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

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

All records