CVE-2025-21658

In the Linux kernel, the following vulnerability has been resolved: btrfs: avoid NULL pointer dereference if no valid extent tree [BUG] Syzbot reported a crash with the following call trace: BTRFS info (device loop0): scrub: started on devid 1 BUG: kernel NULL pointer dereference, address: 0000000000000208 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 106e70067 P4D 106e70067 PUD 107143067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 UID: 0 PID: 689 Comm: repro Kdump: loaded Tainted: G O 6.13.0-rc4-custom+ #206 Tainted: [O]=OOT_MODULE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS unknown 02/02/2022 RIP: 0010:find_first_extent_item+0x26/0x1f0 [btrfs] Call Trace: scrub_find_fill_first_stripe+0x13d/0x3b0 [btrfs] scrub_simple_mirror+0x175/0x260 [btrfs] scrub_stripe+0x5d4/0x6c0 [btrfs] scrub_chunk+0xbb/0x170 [btrfs] scrub_enumerate_chunks+0x2f4/0x5f0 [btrfs] btrfs_scrub_dev+0x240/0x600 [btrfs] btrfs_ioctl+0x1dc8/0x2fa0 [btrfs] ? do_sys_openat2+0xa5/0xf0 __x64_sys_ioctl+0x97/0xc0 do_syscall_64+0x4f/0x120 entry_SYSCALL_64_after_hwframe+0x76/0x7e [CAUSE] The reproducer is using a corrupted image where extent tree root is corrupted, thus forcing to use "rescue=all,ro" mount option to mount the image. Then it triggered a scrub, but since scrub relies on extent tree to find where the data/metadata extents are, scrub_find_fill_first_stripe() relies on an non-empty extent root. But unfortunately scrub_find_fill_first_stripe() doesn't really expect an NULL pointer for extent root, it use extent_root to grab fs_info and triggered a NULL pointer dereference. [FIX] Add an extra check for a valid extent root at the beginning of scrub_find_fill_first_stripe(). The new error path is introduced by 42437a6386ff ("btrfs: introduce mount option rescue=ignorebadroots"), but that's pretty old, and later commit b979547513ff ("btrfs: scrub: introduce helper to find and fill sector info for a scrub_stripe") changed how we do scrub. So for kernels older than 6.6, the fix will need manual backport.

This Cyber News was published on www.tenable.com. Publication date: Tue, 21 Jan 2025 21:11:02 +0000

Cyber News related to CVE-2025-21658

CVE-2025-21658 - In the Linux kernel, the following vulnerability has been resolved: btrfs: avoid NULL pointer dereference if no valid extent tree [BUG] Syzbot reported a crash with the following call trace: BTRFS info (device loop0): scrub: started on devid 1 BUG: ...
5 months ago Tenable.com

CVE-2022-21658 - Rust is a multi-paradigm, general-purpose programming language designed for performance and safety, especially safe concurrency. The Rust Security Response WG was notified that the `std::fs::remove_dir_all` standard library function is vulnerable a ...
2 years ago

CVE-2020-21658 - A Cross-Site Request Forgery (CSRF) in WDJA CMS v1.5.2 allows attackers to arbitrarily add administrator accounts via a crafted URL. ...
3 years ago

CVE-2023-21658 - Transient DOS in WLAN Firmware while processing the received beacon or probe response frame. ...
2 years ago

CVE-2021-21658 - Jenkins Nuget Plugin 1.0 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks. ...
1 year ago

CVE-2024-21658 - discourse-calendar is a discourse plugin which adds the ability to create a dynamic calendar in the first post of a topic. The limit on region value length is too generous. This allows a malicious actor to cause a Discourse instance to use excessive ...
9 months ago

CISA Releases Thirteen Industrial Control Systems Focusing Vulnerabilities & Exploits - An improper output neutralization for logs vulnerability CVE-2024-5594 in Siemens SINEMA Remote Connect Server. It allows a malicious OpenVPN peer to send garbage to the OpenVPN log or cause high CPU load. The advisory includes missing ...
3 months ago Cybersecuritynews.com CVE-2024-5594

CISA Releases 20 ICS Advisories Detailing Vulnerabilities & Exploits - Vulnerabilities in the SIPROTEC 5 series include Cleartext storage of sensitive information (CVE-2024-53651), which has a CVSS v3 base score of 4.6. Mitigation involves firmware updates and restricting network access. This SCADA management software ...
4 months ago Cybersecuritynews.com CVE-2024-53651 CVE-2025-25067 CVE-2025-24865 CVE-2025-22896 CVE-2025-23411 CVE-2023-37482 CVE-2024-54015 CVE-2022-38465 CVE-2025-24811 CVE-2025-20615 CVE-2025-24836 CVE-2025-23421 CVE-2024-53977 CVE-2025-23363 CVE-2025-1283 CVE-2025-23403 CVE-2025-26473 CVE-2025-25281 CVE-2025-24861

Apple backports zero-day patches to older iPhones and Macs - Apple has released security updates that backport fixes for actively exploited vulnerabilities that were exploited as zero-days to older versions of its operating systems. Specifically, the latest update for iOS 18.4 and iPadOS 18.4 fixes 77 ...
2 months ago Bleepingcomputer.com CVE-2025-30456

CVE-2025-37859 - In the Linux kernel, the following vulnerability has been resolved: ...
1 month ago

Hardening Windows Servers - Top Strategies to Prevent Exploits in 2025 - By leveraging the default security enhancements in Windows Server 2025 alongside strategic implementations of Application Control, Attack Surface Reduction, and proper credential management, organizations can significantly reduce their risk exposure ...
1 month ago Cybersecuritynews.com

CISA Warns of Windows NTFS Vulnerability Actively Exploited to Access Sensitive Data - In an era where file system vulnerabilities comprise 23% of KEV entries, the March 2025 advisories serve as a stark reminder: patch, segment, and verify—before attackers exploit the gaps. These flaws CVE-2025-24984, CVE-2025-24991, CVE-2025-24993, ...
3 months ago Cybersecuritynews.com CVE-2025-24984

Palo Alto Networks tags new firewall bug as exploited in attacks - Palo Alto Networks warns that a file read vulnerability (CVE-2025-0111) is now being chained in attacks with two other flaws (CVE-2025-0108 with CVE-2024-9474) to breach PAN-OS firewalls in active attacks. "Palo Alto Networks has observed exploit ...
4 months ago Bleepingcomputer.com CVE-2025-0111 CVE-2025-0108 CVE-2024-9474

Cybercrime Escalates in 2025 as Hackers Target Everyday Devices with Sophisticated Attacks - “We’re handing attackers the keys to critical operations,” warns Forescout CEO Barry Mainz, noting that 50% of the most vulnerable devices 2025 are routers, the gatekeepers of home and enterprise networks. Hybrid Broadcast-Broadband Television ...
1 month ago Cybersecuritynews.com CVE-2023-1389

CVE-2025-37916 - In the Linux kernel, the following vulnerability has been resolved: ...
1 month ago

Recent Windows Server 2025 updates cause Remote Desktop freezes - Microsoft says a known issue is causing Remote Desktop freezes on Windows Server 2025 systems after installing security updates released since the February 2025 Patch Tuesday. "After installing the February 2025 Security update ...
2 months ago Bleepingcomputer.com

VMware Vulnerabilities Exploited Actively to Deploy Ransomware - On March 4, 2025, Broadcom released emergency updates to address three critical vulnerabilities – CVE-2025-22224, CVE-2025-22225, and CVE-2025-22226 – affecting several VMware products, including ESXi, Workstation, and Fusion. Given the ...
3 months ago Cybersecuritynews.com CVE-2025-22224

Windows 11 January 2025 Preview Update Disconnects Remote Desktop Sessions - Microsoft’s January 2025 Windows preview update (KB5050094) for Windows 11 version 24H2 has caused significant issues with Remote Desktop Protocol (RDP) sessions, including Remote Desktop Services (RDS). The policy, named “Windows 11 24H2 ...
2 months ago Cybersecuritynews.com

Multiple Dell Unity Vulnerabilities Let Attackers Compromise Affected System - Dell Technologies has released a critical security update addressing multiple severe vulnerabilities in its Unity enterprise storage systems that could allow attackers to execute arbitrary commands as root, delete critical system files, and perform ...
2 months ago Cybersecuritynews.com CVE-2024-49563

Paragon Partition Manager Vulnerabilities Let Attackers Escalate Privilege & Trigger DoS Attacks - Here the security analysts at Carnegie Mellon University noted that the most concerning aspect of these vulnerabilities is that they can be exploited even if Paragon Partition Manager isn’t installed on the target system, through a technique ...
3 months ago Cybersecuritynews.com CVE-2025-0286

41,500+ VMware ESXi Instances Vulnerable to Code Execution Attacks - We are scanning & reporting out VMware ESXi CVE-2025-22224 vulnerable instances ("a malicious actor with local admin privileges on a virtual machine may exploit this to execute code as virtual machine's VMX process running on ...
3 months ago Cybersecuritynews.com CVE-2025-22224

Hackers Exploit Software Flaws within Hours Forcing Urgent Push for Faster Patches - This rapidly shrinking window between vulnerability discovery and active exploitation forces organizations to rethink traditional patching cycles and implement more agile security responses. In April, Microsoft disclosed that a zero-day vulnerability ...
1 month ago Cybersecuritynews.com CVE-2025-29824

CVE-2025-41233 - Description: ...
1 week ago

Microsoft fixes Remote Desktop issues caused by Windows updates - "After installing the January 2025 Windows preview update (KB5050094) and later updates, users might experience unexpected disconnections with Remote Desktop Protocol (RDP) sessions, including Remote Desktop Services (RDS)," the company said in a ...
2 months ago Bleepingcomputer.com

Microsoft fixes Windows Server 2025 blue screen, install issues - Microsoft also fixed a bug that caused authentication issues when Credential Guard was enabled on systems using the Kerberos PKINIT pre-auth security protocol, and it introduced a new Windows 11 24H2 safeguard hold for systems with SenseShield ...
2 months ago Bleepingcomputer.com