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kozistr

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  • Dec 23, 2020 • 5 min read ☕

    2020년 회고

    • #Diary
    TL;DR 올해 처음으로 회고록을 적어보는데, 사실 작년부터 써야지 생각만 하다 결국 놓쳤는데, 벌써 1년이 지나 쓸 때가 온 걸 보고 시간은 정말 빨리 가는 걸 실감하며, 2020년 회고지만 지난 2년 동안 일어났던 작고 큼지막한 일들을 하나씩 적…
  • Dec 12, 2020 • 11 min read ☕

    About ME

    • #About
    Profile Senior in Computer Engineering from KUT Alternative Military Service Status : on-going () CV : [PDF] (as of Dec. 2020) Links Emai…
  • Sep 07, 2020 • 8 min read ☕

    NVAE A Deep Hierarchical Variational Autoencoder

    • #Deep-Learning
    TL;DR 최근에 NVLabs 에서 VAE 관련 논문이 하나 나왔는데, 매주 월요일이 회사 짬데이라고 개인 or 팀 끼리 공부하고 싶은 주제 공부하고 공유하는 문화가 있어서, 마침 잘 돼서 논문 리뷰를 해 봅니다. paper : arXiv code …
  • Jun 16, 2020 • 5 min read ☕

    TUNIT Rethinking the Truly Unsupervised Image-to-Image Translation

    • #Deep-Learning
    TL;DR 최근에 Clova AI 에서 unsupervised image 2 image translation 관련 논문이 나와서 한번 빠르게 봤습니다. 일단 제목부터가 재밌는데 TUNIT, Truly Unsupervised Image to Image…
  • Jun 06, 2020 • 7 min read ☕

    UIS-RNN-SML SUPERVISED ONLINE DIARIZATION WITH SAMPLE MEAN LOSS FOR MULTI-DOMAIN DATA

    • #Deep-Learning
    TL;DR 평소에 speaker diarization task 에 정말 관심이 많고, 이전에 이쪽 분야 (speech domain 쪽 전반적으로) 업무를 하다가, 최근에 다시 이쪽 분야 trend 는 어떤지 궁금해서 예전에 UIS-RNN 기반으로 …
  • May 23, 2020 • 5 min read ☕

    ResNeSt Split-Attention Networks

    • #Deep-Learning
    TL;DR Amazon 에서 지난달에 재밌는 논문이 나왔는데요, 새로운 image classification architecture 를 제안했는데, EfficientNet 보다 더 좋은 성능을 보이는 human-made architecture 를 …
  • May 10, 2020 • 4 min read ☕

    Cotatron Transcription-Guided Speech Encoder for Any-to-Many Voice Conversion without Parallel Data

    • #Deep-Learning
    TL;DR 최근 mindslab 에서 VC (Voice Conversion)관련 논문이 나와서 오랜만에 요 쪽 domain 도 볼 겸 해서 논문을 읽게 됐습니다. 간단하게 요약하면, 유명한 google 의 TTS model 인 tacotron2 기반…
  • Apr 26, 2020 • 5 min read ☕

    YOLOv4 Optimal Speed and Accuracy of Object Detection

    • #Deep-Learning
    TL;DR 이번에 리뷰할 논문은 오랜만에 나온 YOLO 4번째 버전인 YOLOv4 논문입니다. 이번 버전은 이야기가 있는(?) 버전인데, YOLO 원 저자인 Joe Redmon 님 께서 올해 2월쯤에 twit으로 CV 연구를 그만하겠다고 선언하셨는데…
  • Apr 11, 2020 • 4 min read ☕

    ELECTRA Pre-training Text Encoders as Discriminators Rather Than Generators

    • #Deep-Learning
    TL;DR 이번에 리뷰할 논문은 ELECTRA 란 google ai 에서 3월에 발표한 논문인데, 재밌는 approach 를 하고 있어서 가져와 봤습니다. ELECTRA paper : OpenReview google ai blog : blog Rel…
  • Apr 11, 2020 • 4 min read ☕

    Self-training with Noisy Student improves ImageNet classification

    • #Deep-Learning
    TL;DR 이번 포스팅에서 리뷰할 논문은 EfficientNet 기반으로 새로운 techniques 를 적용해서 ImageNet dataset 에서 SOTA 를 찍은 논문입니다. 나온지는 꽤 됐지만, 최근 TPU 에서 돌아가는 요 코드를 짜다가 생각…
  • Mar 14, 2020 • 6 min read ☕

    StyleGAN-v2 - Analyzing and Improving the Image Quality of StyleGAN

    • #Deep-Learning
    TL;DR 이번 포스팅에서는 리뷰할 논문은 지난 19년 11월에 나온 StyleGAN v2를 리뷰 해 보겠습니다 StyleGAN 에 이어서 2 번째 논문인데, 이번 버전에서는 어떤 문제점들을 어떻게 해결했는지를 한번 보려고 합니다! 아래는 Style…
  • Mar 14, 2020 • 6 min read ☕

    SAN Second-order Attention Network for Single Image Super-Resolution

    • #Deep-Learning
    TL;DR 이번 포스팅에서는 리뷰할 논문은 SAN (Second-order Attention Network) 이라는 Image Super Resolution task 에서 현재 여러 test set 에서 제일 높은 성능 (19년도 기준)을 보이고 있…
  • Mar 14, 2020 • 9 min read ☕

    StarGAN-v2 - Diverse Image Synthesis for Multiple Domains review

    • #Deep-Learning
    TL;DR 이번 포스팅에서는 I2I translation 를 푼 StartGAN v2 을 리뷰해 보겠습니다. 평소에 Multi-Domain I2I translation task 에 관심이 많았는데, 작년에 나온 StarGAN 후속작인 StarGAN …
  • Mar 14, 2020 • 8 min read ☕

    StarGAN-v2 - Diverse Image Synthesis for Multiple Domains review

    • #Deep-Learning
    TL;DR 이번 포스팅에서는 ICCV 2019 에서 Best Paper Awards 에서 선정된 papers 중에 하나인 SinGAN 을 리뷰해 보겠습니다. 개인적으로 정말 재밌게 본 논문이고, ICCV 2019 논문들 중 최고였던거 같아요. 그래서…
  • Jul 20, 2018 • 10 min read ☕

    Modern Linux Kernel 0,1-day Unkind-Exploitations Review

    • #Security
    • #Linux-Kernel
    TL;DR Last time, I posted about 1-day vulnerability CVE-2017-5123, waitid() arbitrary R/W with null-deref on LK v4.13.x/~v4.14.0-rc4. It ju…
  • Jul 20, 2018 • 1 min read ☕

    LK v4.16.x KASLR Bypass

    • #Security
    • #Linux-Kernel
    TL;DR About my recent founds :) I found a bug, memory leak on v4.16.0-rc5. (KASLR Bypass). Maybe, it works on many LKs (i didn't check all …
  • Jun 17, 2018 • 24 min read ☕

    Linux Kernel - 2018-06-3 Founds

    • #Security
    • #Linux-Kernel
    decodesession6 - soft lockup Got from syzkaller & Found in LK v4.17.0-rc7. Call Trace (Dump) I'll update a post later... End rbinsertcolor …
  • Jun 12, 2018 • 12 min read ☕

    Linux Kernel - 2018-06-2 Founds

    • #Security
    • #Linux-Kernel
    create_filter - memory leak Found on LK v4.17.x. kmemleak message pcpucreatechunk - memory leak Found on LK v4.17.x. kmemleak message set_p…
  • Apr 21, 2018 • 40 min read ☕

    Linux Kernel - 2018-04-3 Founds

    • #Security
    • #Linux-Kernel
    _sctpv6cmpaddr - slab out of bounds Read Found in LK v4.17.0-rc1. slab-out-of-bounds in _sctpv6cmpaddr, 8 bytes read. Demo Log End shrinkd…
  • Apr 02, 2018 • 38 min read ☕

    Linux Kernel - 2018-04-1 Founds

    • #Security
    • #Linux-Kernel
    anonvmachain - memory leak Found in LK v4.16.0-rc7. Call Trace (Dump) End kmalloc-1024 - slab padding/red zone overwritten Got from syzkall…
  • Apr 02, 2018 • 19 min read ☕

    Linux Kernel - 2018-04-2 Founds

    • #Security
    • #Linux-Kernel
    skbreleasedata - use after free Write Got from syzkaller & Found in LK v4.16.0. 2018-04-10 Maybe, it is reproducible under some conditions …
  • Mar 24, 2018 • 31 min read ☕

    Linux Kernel - 2018-03-4 Founds

    • #Security
    • #Linux-Kernel
    devhardstart_xmit - soft lockup Found in LK v4.16.0-rc7. stuck for 30s. Call Trace (Dump) Code Code : c8 00 00 00 48 c1 ea 03 48 01 c3 4…
  • Mar 01, 2018 • 62 min read ☕

    Linux Kernel - 2018-03 Founds

    • #Security
    • #Linux-Kernel
    handle_irq - OOBs Call Trace (Dump) PoC funny, just one call, . do_irq - alloca Out Of Bounds Call Trace (Dump) PoC generated by syz-repro.…
  • Mar 16, 2018 • 22 min read ☕

    Linux Kernel - 2018-03-3 Founds

    • #Security
    • #Linux-Kernel
    perftracebuf_alloc - warn Found in LK v4.16.0-rc5. Call Trace (Dump) Code In . Just size is over , so WARN_ONCE is just called... And all o…
  • Mar 11, 2018 • 16 min read ☕

    Linux Kernel - 2018-03-2 Founds

    • #Security
    • #Linux-Kernel
    sctp_id2assoc - use after free Read Found in LK v4.16.0-rc4. Maybe it could be useful :) Call Trace (Dump) End init_tty - kernel panic Got …
  • Mar 01, 2018 • 77 min read ☕

    Linux Kernel - 2018-03-1 Founds

    • #Security
    • #Linux-Kernel
    handle_irq - OOBs Call Trace (Dump) PoC funny, just one call, . do_irq - alloca Out Of Bounds Call Trace (Dump) PoC generated by syz-repro.…
  • Feb 27, 2018 • 8 min read ☕

    Linux Kernel - NULL Dereference Tutorial

    • #Security
    • #Linux-Kernel
    Case Let's get down to the point this time. I'll give an example code that has a NULL dereference vulnerability. The testing Environment is…
  • Feb 14, 2018 • 35 min read ☕

    Linux Kernel - 2018-02 Founds

    • #Security
    • #Linux-Kernel
    getsockopt - task hung in locksocknested Posting in a long time :) because of other stuff. I have a few LK bugs but skip it :). I just foun…
  • Feb 18, 2018 • 7 min read ☕

    Linux Kernel - Stack based Overflow Tutorial

    • #Security
    • #Linux-Kernel
    TL;DR In this article, we're going to exploit an LK module that has a stack overflow vulnerability by bypassing SMEP. Background Before we …
  • Jan 18, 2018 • 6 min read ☕

    Linux Kernel - 2018-01 Founds

    • #Security
    • #Linux-Kernel
    selinux/sidtabsearchcore - null dereference by GPF I got this bug with 'syzkaller' about a month ago (on v4.15.0-rc4) and have forgotten it…
  • Dec 10, 2017 • 11 min read ☕

    Linux Kernel - 2017-12 Founds

    • #Security
    • #Linux-Kernel
    spin-lock recursion bug (leading to deadlock) There's no recursion check on spinlock where I found it (not exact). So when executed recursi…
  • Oct 29, 2017 • 14 min read ☕

    LK v4.13.x - waitid() LPE

    • #Security
    • #Linux-Kernel
    Linux Kernel waitid() Local Privilege Escalation TL;DR Some days ago, i just saw this vulnerability somewhere in google. It's about Kernel …
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