Daily Writeups
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Daily Writeups
⤷ Title: Ubuntu Livepatch Now Supports Arm64 for Rebootless Kernel Updates
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𐀪 Author: Do Son
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ⴵ Time: Thu, 25 Jun 2026 03:46:40 +0000
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⌗ Tags: #Linux #ARM64 #Canonical #Linux Kernel #Livepatch #Ubuntu #Ubuntu Pro
Daily CyberSecurity
Ubuntu Livepatch Now Supports Arm64 for Rebootless Kernel Updates
Ubuntu Livepatch now supports Arm64, applying critical kernel security updates with no reboot on Ubuntu Core 26 and Ubuntu 26.04 LTS.
16 views
Daily Writeups
⤷ Title: The Legacy of Dirty COW Continues: Demystifying CVE-2026–43503 “DirtyClone”
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𐀪 Author: Denizhalil
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ⴵ Time: Fri, 26 Jun 2026 18:54:03 GMT
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⌗ Tags: #infosec #cybersecurity #cve202643503 #linux_kernel #dirtyclone
Medium
The Legacy of Dirty COW Continues: Demystifying CVE-2026–43503 “DirtyClone”
The Linux kernel relies heavily on advanced memory optimization techniques to maintain peak performance under heavy structural workloads…
11 views
Daily Writeups
⤷ Title: DirtyClone Linux Kernel Flaw Lets Local Users Get Root
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𐀪 Author: Do Son
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ⴵ Time: Sun, 28 Jun 2026 13:25:27 +0000
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⌗ Tags: #Vulnerability Report #CVE_2026_43503 #DirtyClone #DirtyFrag #Linux Kernel #LPE #privilege escalation
Daily CyberSecurity
DirtyClone Linux Kernel Flaw Lets Local Users Get Root
TL;DR DirtyClone is a Linux kernel privilege escalation flaw tracked as CVE-2026-43503. It scores 8.8 on the CVSS scale. JFrog Security Research found the bug and published a working exploit demon…
22 views
Daily Writeups
⤷ Title: Public PoC and Exploit Details Released for IPV6_FRAG_ESCAPE on RHEL 10
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𐀪 Author: Do Son
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ⴵ Time: Mon, 29 Jun 2026 09:28:37 +0000
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⌗ Tags: #Vulnerability Report #CentOS Stream 10 #IPv6 container escape #IPV6_FRAG_ESCAPE #Linux kernel exploit #Massimiliano Oldani #privilege escalation #RHEL 10 #skb_shared_info overflow
Daily CyberSecurity
Public PoC and Exploit Details Released for IPV6_FRAG_ESCAPE on RHEL 10
Security researcher Massimiliano Oldani has published IPV6_FRAG_ESCAPE, a working proof-of-concept for an IPv6 container escape on CentOS and RHEL 10. The exploit details and PoC code are now publ…
7 views
Daily Writeups
⤷ Title: Linux Kernel Surpasses 43 Million Lines
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𐀪 Author: Nam Phong
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ⴵ Time: Tue, 30 Jun 2026 06:25:01 +0000
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⌗ Tags: #Linux #Linux 7.2 #Linux Kernel #open source
Information Security News
Linux Kernel Surpasses 43 Million Lines
The Linux kernel has expanded to a scale that is difficult to imagine for an open-source project. Following a week of intense merges for Linux 7.2, the source tree surpassed 43 million lines. More…
25 views
Daily Writeups
⤷ Title: kernel.org Outage: Config Error Wipes All Linux Kernel Files
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𐀪 Author: Do Son
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ⴵ Time: Fri, 03 Jul 2026 07:49:00 +0000
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⌗ Tags: #Technology #Configuration Error #kernel.org #Linux Foundation #Linux Kernel #Mirror Server #Open Source Infrastructure #outage
Daily CyberSecurity
kernel.org Outage: Config Error Wipes All Linux Kernel Files
Yesterday, reports emerged that kernel.org had deleted all hosted kernel files. Every archived and current kernel package became inaccessible. Affected paths returned HTTP 404 or HTTP 403 errors. …
11 views
Daily Writeups
⤷ Title: Bad Epoll Vulnerability Exposes Linux Systems to Root Access
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𐀪 Author: Nam Phong
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ⴵ Time: Mon, 06 Jul 2026 07:38:07 +0000
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⌗ Tags: #Vulnerability #Bad Epoll #CVE_2026_46242 #Linux #Linux Kernel #privilege escalation #zero_day
Information Security News
Bad Epoll Vulnerability Exposes Linux Systems to Root Access
A critical vulnerability has been unearthed within the Linux kernel. This flaw empowers an ordinary user to escalate their privileges to root. It threatens not merely servers and workstations, but…
20 views
Daily Writeups
⤷ Title: EFS File System Removed from Linux Kernel in 7.3
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𐀪 Author: Nam Phong
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ⴵ Time: Mon, 06 Jul 2026 11:40:21 +0000
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⌗ Tags: #Linux #EFS File System #Kernel Maintenance #Linux 7.3 #Linux Kernel #open source #SGI IRIX #XFS
Information Security News
EFS File System Removed from Linux Kernel in 7.3
Legacy components can survive in the Linux kernel for decades. They often outlast the very systems that once depended on them. Yet the EFS file system appears set to finally depart. According to a…
19 views
Daily Writeups
⤷ Title: Linux Kernel Vulnerability CVE-2024-26582: Public PoC Reaches Root Shell
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𐀪 Author: Do Son
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ⴵ Time: Tue, 07 Jul 2026 07:27:23 +0000
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⌗ Tags: #Vulnerability #CVE_2024_26582 #kTLS #Linux Kernel #privilege escalation #use after free
Daily CyberSecurity
Linux Kernel Vulnerability CVE-2024-26582: Public PoC Reaches Root Shell
TL;DR Researchers have published full technical details and proof-of-concept exploit code for a Linux kernel vulnerability tracked as CVE-2024-26582 (CVSS 7.8). The bug is a use-after-free in the …
10 views
Daily Writeups
⤷ Title: Public Exploit for GhostLock (CVE-2026-43499) Enables Linux Privilege Escalation and Container Escape
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𐀪 Author: Do Son
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ⴵ Time: Wed, 08 Jul 2026 02:14:34 +0000
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⌗ Tags: #Vulnerability Report #container escape #CVE_2026_43499 #GhostLock #kernelCTF #Linux Kernel #privilege escalation #rtmutex #use after free
Daily CyberSecurity
Public Exploit for GhostLock (CVE-2026-43499) Enables Linux Privilege Escalation and Container Escape
TL;DR Researchers have published full details and proof-of-concept code for GhostLock. This Linux kernel bug, tracked as CVE-2026-43499, hid in the code for over 15 years. It lets an unprivileged …
11 views
Daily Writeups
⤷ Title: Android Remote Root Exploit Chain Unveiled by Nebula
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𐀪 Author: Do Son
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ⴵ Time: Wed, 08 Jul 2026 09:20:31 +0000
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⌗ Tags: #Vulnerability Report #android #Exploit Chain #Linux Kernel #nebula #Remote Root
Daily CyberSecurity
Android Remote Root Exploit Chain Unveiled by Nebula
Cybersecurity firm Nebula recently unveiled a demonstration video exposing a critical kernel-level vulnerability and remote privilege escalation exploit within the Android ecosystem. This sophisti…
18 views
Daily Writeups
⤷ Title: Linux Kernel Privilege Escalation Flaw CVE-2026-46215: PoC and Full Write-Up Public
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𐀪 Author: Do Son
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ⴵ Time: Thu, 09 Jul 2026 12:33:38 +0000
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⌗ Tags: #Vulnerability Report #CVE_2026_46215 #DRM #Linux Kernel #privilege escalation #use after free
Daily CyberSecurity
Linux Kernel Privilege Escalation Flaw CVE-2026-46215: PoC and Full Write-Up Public
TL;DR A researcher has published a full technical write-up and proof-of-concept exploit for a Linux kernel privilege escalation flaw. Tracked as CVE-2026-46215 (CVSS 7.8), it is a use-after-free i…
15 views
Daily Writeups
⤷ Title: Public PoC Discloses CVE-2026-31694, a Linux Kernel FUSE Local Privilege Escalation
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𐀪 Author: Do Son
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ⴵ Time: Fri, 10 Jul 2026 08:00:22 +0000
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⌗ Tags: #Vulnerability Report #CVE_2026_31694 #FUSE #Linux Kernel #Linux Security #Local Privilege Escalation #page cache overflow #proof_of_concept
Daily CyberSecurity
Public PoC Discloses CVE-2026-31694, a Linux Kernel FUSE Local Privilege Escalation
TL;DR Researchers have published full details and working exploit code for CVE-2026-31694. This Linux kernel FUSE bug lets a local user overflow the page cache and seize root. It reaches recent ke…
11 views
Daily Writeups
⤷ Title: IonStack: Android 17 Two-Bug Chain Disclosed by Nebula Security
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𐀪 Author: Nam Phong
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ⴵ Time: Fri, 10 Jul 2026 14:00:05 +0000
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⌗ Tags: #Vulnerability #Android 17 #Android Security #Firefox vulnerability #IonStack #Linux Kernel Flaw #Nebula Security #Responsible Disclosure
Information Security News
IonStack: Android 17 Two-Bug Chain Disclosed by Nebula Security
A security research firm has disclosed a two-vulnerability exploit chain named IonStack that affects Android 17. Nebula Security identified both vulnerabilities and has already notified the releva…
18 views
Daily Writeups
⤷ Title: Exploited in the Wild? Debian Webhost Rooted as Public PoCs Land for Bad Epoll (CVE-2026-46242) and IPv6 Frag Escape
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𐀪 Author: Do Son
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ⴵ Time: Tue, 14 Jul 2026 14:08:07 +0000
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⌗ Tags: #Vulnerability Report #Bad Epoll #CVE_2026_46242 #CVE_2026_53362 #Linux Kernel #privilege escalation
Daily CyberSecurity
Exploited in the Wild? Debian Webhost Rooted as Public PoCs Land for Bad Epoll (CVE-2026-46242) and IPv6 Frag Escape
TL;DR Two Linux kernel flaws now have public proof-of-concept exploit code and full technical write-ups. Bad Epoll (CVE-2026-46242) lets an unprivileged user gain root. A second bug, CVE-2026-5336…
11 views
Daily Writeups
⤷ Title: Public Exploit and Details Released for Bad Epoll Root Flaw (CVE-2026-46242)
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𐀪 Author: Do Son
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ⴵ Time: Tue, 14 Jul 2026 13:00:53 +0000
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⌗ Tags: #Vulnerability Report #android #Bad Epoll #CVE_2026_43074 #CVE_2026_46242 #epoll #kernelCTF #Linux Kernel #privilege escalation #use after free
Daily CyberSecurity
Public Exploit and Details Released for Bad Epoll Root Flaw (CVE-2026-46242)
TL;DR Bad Epoll is a Linux kernel use-after-free that turns any unprivileged user into root. It is tracked as CVE-2026-46242 and also reaches Android. Researcher Jaeyoung Chung has now published t…
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Daily Writeups
⤷ Title: Linux Kernel Publishes 440 CVE Advisories in 24 Hours as AI Accelerates Bug Hunting
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𐀪 Author: Do Son
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ⴵ Time: Tue, 21 Jul 2026 02:09:49 +0000
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⌗ Tags: #Linux #AI #CVE #KVM #Linux Kernel #smb #Vulnerability
Daily CyberSecurity
Linux Kernel Publishes 440 CVE Advisories in 24 Hours as AI Accelerates Bug Hunting
Artificial intelligence now hunts vulnerabilities far faster than human security researchers. In recent months, AI models have uncovered high-severity flaws across many well-known projects. The Li…
12 views
Daily Writeups
⤷ Title: OVH Patches CVE-2026-53359 KVM Flaw Across a Million VMs
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𐀪 Author: Do Son
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ⴵ Time: Tue, 21 Jul 2026 08:26:08 +0000
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⌗ Tags: #Vulnerability Report #Cloud Security #CVE_2026_53359 #KVM #Linux Kernel #OVHCloud #Vulnerability
Daily CyberSecurity
OVH Patches CVE-2026-53359 KVM Flaw Across a Million VMs
European cloud provider OVH just published a candid retrospective on its emergency patch campaign. The post explains how it fixed a KVM virtualization flaw in under ten days. The scale was enormou…
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Daily Writeups
⤷ Title: RefluXFS CVE-2026-64600: XFS Root Privilege Escalation Hits 16.4M Systems
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𐀪 Author: 0fjno
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ⴵ Time: Wed, 22 Jul 2026 17:51:10 +0000
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⌗ Tags: #Vulnerability Report #CVE_2026_64600 #Linux Kernel #privilege escalation #Qualys #race condition #RefluXFS #XFS
Daily CyberSecurity
RefluXFS CVE-2026-64600: XFS Root Privilege Escalation Hits 16.4M Systems
TL;DR Qualys disclosed RefluXFS on July 22, 2026. Tracked as CVE-2026-64600, it is a Linux kernel XFS privilege escalation to root. Qualys estimates the flaw potentially affects more than 16.4 mil…
12 views
Daily Writeups
⤷ Title: RefluXFS Linux Vulnerability: High-Severity Root Escalation in XFS
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𐀪 Author: Nam Phong
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ⴵ Time: Fri, 24 Jul 2026 13:30:47 +0000
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⌗ Tags: #Vulnerability #CVE_2026_64600 #Linux Kernel #privilege escalation #RefluXFS #XFS Vulnerability
Information Security News
RefluXFS Linux Vulnerability: High-Severity Root Escalation in XFS
Unmasking the RefluXFS Vulnerability Impervious defense mechanisms in Linux offer no sanctuary when critical vulnerabilities manifest at the filesystem layer itself. The newly identified RefluXFS …
4 views