nasa/CF

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The Core Flight System (cFS) CFDP application.

Stars: 120
Forks: 77
Open beginner issues: 0
Indexed issues: 40
Avg merge: 7d 18h
Merged PRs (30d): 3

Dominant language: C
License: Apache-2.0
Last GitHub push: Sep 15, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

40 open issues indexed

CF Unused type declarations Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

nasa/CF#522 · Opened Sep 18, 2026
Need backward compatibility bridge for CF commands Open

nasa/CF#521 · 1 assignee · Opened Sep 17, 2026
CF_CFDP_R_ProcessFd does not bound received FD PDU offset against the declared transaction file size Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

nasa/CF#520 · Opened Sep 17, 2026
[SECURITY] OOB Heap Read in CF_CFDP_CopyStringFromLV via Unvalidated PDU LV Length Field — Remotely Triggerable via Crafted Metadata PDU Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

nasa/CF#491 · Opened May 6, 2026
Default TX/RX Msg IDs swapped between CMD/TLM types Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

nasa/CF#488 · Opened Apr 22, 2026
Unsafe Handling of Zero-Length Destination Buffer in CF_CFDP_GetMoveTarget() Can Trigger Out-of-Bounds Read Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

nasa/CF#484 · Opened Mar 10, 2026
Rename cf_cmd.c file to cf_cmds.c Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 58/100

nasa/CF#476 · Opened May 25, 2025
`CF_CFDP_ProcessPollingDirectories()` can be simplified Open

enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

nasa/CF#467 · Opened Nov 28, 2024
Assert checks non-existent variable (`pt`) in `CF_CFDP_ProcessPlaybackDirectory()` Open

invalid

Difficulty 1/5 Under an hour Newbie friendliness 68/100

nasa/CF#465 · Opened Nov 28, 2024
f-sanitizer report runtime error in coverage-cf-cf_cmd-testrunner Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 52/100

nasa/CF#454 · Opened Jun 11, 2024
f-sanitizer report run time error in coverage-cf-cf_cfdp-testrunner Open

bug unit-test

Difficulty 3/5 1-2 days Newbie friendliness 30/100

nasa/CF#453 · Opened Jun 11, 2024
f-sanitizer report run time error in coverage-cf-cf_cfdp_s-testrunner Open

bug unit-test

Difficulty 3/5 1-2 days Newbie friendliness 35/100

nasa/CF#452 · Opened Jun 11, 2024
f-sanitizer report run time error in coverage-cf-cf_cfdp_sbintf-testrunner Open

bug unit-test

Difficulty 3/5 1-2 days Newbie friendliness 45/100

nasa/CF#451 · Opened Jun 11, 2024
f-sanitizer report run time error in coverage-cf-cf_cfdp_r-testrunner Open

bug unit-test

Difficulty 3/5 1-2 days Newbie friendliness 45/100

nasa/CF#450 · Opened Jun 10, 2024
EotPacket provides transaction status, but defines are internal Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 48/100

nasa/CF#449 · Opened Jun 6, 2024
Transaction priority sorted incorrectly Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

nasa/CF#442 · Opened May 16, 2024
Placing a file with a name that is too long in the polling directory causes errors to spam Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nasa/CF#439 · 1 comment · Opened Mar 15, 2024
CF writes to received SB buffer Open

bug

nasa/CF#420 · 1 comment · 1 assignee · Opened Nov 30, 2023
Receiving Entity Not Handling EOF (cancel) PDU Correctly Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

nasa/CF#389 · 1 comment · Opened Jun 8, 2023
CF command counters format inconsistent with cFS Open

enhancement Equuleus-rc2

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

nasa/CF#382 · 1 comment · Opened May 3, 2023
Rework no message buffer error reporting to not spam Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nasa/CF#378 · Opened Apr 7, 2023
Audit CF for cyclomatic complexity compliance Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nasa/CF#369 · 3 comments · Opened Feb 28, 2023
Coding Style: Braces around single-line statements in if/for blocks? Open

question

Difficulty 4/5 3-5 days Newbie friendliness 32/100

nasa/CF#350 · Opened Dec 7, 2022
PDU processing when crc_flag true Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

nasa/CF#343 · 5 comments · Opened Nov 22, 2022
Register the CF configuration table as dump-only Open

Equuleus-rc2

nasa/CF#429 · 1 comment · 2 assignees · Opened Sep 6, 2022
Follow temporary file + rename pattern for all files Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nasa/CF#280 · 3 comments · Opened Jul 13, 2022
New RX PDU dropped due to max RX transactions reached on channel not counted Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

nasa/CF#268 · Opened Jun 22, 2022
Remove unit test context_t elements as overkill for a coverage test Open

unit-test

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nasa/CF#264 · Opened Jun 16, 2022
Add fixed size CCSDS packet option Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nasa/CF#193 · 1 comment · Opened Feb 8, 2022
CF updates its destination file "in-place" Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 42/100

nasa/CF#132 · Opened Dec 14, 2021
CF should not require/hard-code use of the software bus for PDU transport Open

enhancement Equuleus-rc2

nasa/CF#130 · 3 comments · 1 assignee · Opened Dec 14, 2021
Simplify function names in unit test Open

unit-test

Difficulty 3/5 1-2 days Newbie friendliness 45/100

nasa/CF#114 · Opened Dec 10, 2021
Support for alternate checksum type indicated in Metadata PDU Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nasa/CF#99 · Opened Dec 8, 2021
Should not use "HK" packet data elements as active/runtime control values Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

nasa/CF#92 · Opened Dec 6, 2021
Use of globals to store ephemeral / in-transit data Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

nasa/CF#91 · Opened Dec 6, 2021
Consolidate repeated unit test setup code into helper functions Open

unit-test

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nasa/CF#87 · Opened Dec 3, 2021
Remove use of random numbers in coverage test Open

unit-test

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nasa/CF#86 · 1 comment · Opened Dec 3, 2021
CF should use unions to simplify code and avoid improper casting Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 42/100

nasa/CF#59 · Opened Nov 23, 2021
Add transaction watchpoint concept for transaction complete notification Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

nasa/CF#21 · 1 comment · Opened Nov 23, 2021
Use of Playback Directory command Open

docs question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nasa/CF#11 · 4 comments · Opened Apr 1, 2021

nasa/CF

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