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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
    <description>Contains only the most 10 recent entries.</description>
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    <lastBuildDate>Sun, 11 Oct 2026 23:40:51 +0000</lastBuildDate>
    <item>
      <title>CVE-2025-21851 — bpf: Fix softlockup in arena_map_free on 64k page kernel</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2025-21851</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;bpf: Fix softlockup in arena_map_free on 64k page kernel&lt;/p&gt;
&lt;p&gt;On an aarch64 kernel with CONFIG_PAGE_SIZE_64KB=y,
arena_htab tests cause a segmentation fault and soft lockup.
The same failure is not observed with 4k pages on aarch64.&lt;/p&gt;
&lt;p&gt;It turns out arena_map_free() is calling
apply_to_existing_page_range() with the address returned by
bpf_arena_get_kern_vm_start().  If this address is not page-aligned
the code ends up calling apply_to_pte_range() with that unaligned
address causing soft lockup.&lt;/p&gt;
&lt;p&gt;Fix it by round up GUARD_SZ to PAGE_SIZE &amp;lt;&amp;lt; 1 so that the
division by 2 in bpf_arena_get_kern_vm_start() returns
a page-aligned value.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;bpf: Fix softlockup in arena_map_free on 64k page kernel&lt;/p&gt;
&lt;p&gt;On an aarch64 kernel with CONFIG_PAGE_SIZE_64KB=y,
arena_htab tests cause a segmentation fault and soft lockup.
The same failure is not observed with 4k pages on aarch64.&lt;/p&gt;
&lt;p&gt;It turns out arena_map_free() is calling
apply_to_existing_page_range() with the address returned by
bpf_arena_get_kern_vm_start().  If this address is not page-aligned
the code ends up calling apply_to_pte_range() with that unaligned
address causing soft lockup.&lt;/p&gt;
&lt;p&gt;Fix it by round up GUARD_SZ to PAGE_SIZE &amp;lt;&amp;lt; 1 so that the
division by 2 in bpf_arena_get_kern_vm_start() returns
a page-aligned value.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2025-21851</guid>
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    <item>
      <title>USN-7521-1 — linux, linux-azure, linux-azure-6.11, linux-gcp, linux-gcp-6.11, linux-hwe-6.11, linux-oem-6.11, linux-raspi, linux-rea…</title>
      <link>https://vulnerability.circl.lu/vuln/usn-7521-1</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Ubuntu:24.04:LTS: linux-azure-6.11, Ubuntu:24.04:LTS: linux-gcp-6.11, Ubuntu:24.04:LTS: linux-hwe-6.11, Ubuntu:24.04:LTS: linux-oem-6.11&lt;/p&gt;
&lt;p&gt;Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
  - ARM64 architecture;
  - PowerPC architecture;
  - x86 architecture;
  - Block layer subsystem;
  - Serial ATA and Parallel ATA drivers;
  - Drivers core;
  - Network block device driver;
  - Bluetooth drivers;
  - Character device driver;
  - TPM device driver;
  - Clock framework and drivers;
  - Hardware crypto device drivers;
  - FireWire subsystem;
  - EFI core;
  - Qualcomm firmware drivers;
  - GPIO subsystem;
  - GPU drivers;
  - HID subsystem;
  - I2C subsystem;
  - I3C subsystem;
  - InfiniBand drivers;
  - Input Device (Mouse) drivers;
  - IOMMU subsystem;
  - Multiple devices driver;
  - Media drivers;
  - NVIDIA Tegra memory controller driver;
  - Fastrpc Driver;
  - Network drivers;
  - Operating Performance Points (OPP) driver;
  - PCI subsystem;
  - x86 platform drivers;
  - PPS (Pulse Per Second) driver;
  - PTP clock framework;
  - Remote Processor subsystem;
  - Real Time Clock drivers;
  - S/390 drivers;
  - SCSI subsystem;
  - QCOM SoC drivers;
  - SPI subsystem;
  - Media staging drivers;
  - Trusted Execution Environment drivers;
  - TTY drivers;
  - UFS subsystem;
  - USB Device Class drivers;
  - USB core drivers;
  - USB Gadget drivers;
  - USB Host Controller drivers;
  - Framebuffer layer;
  - File systems infrastructure;
  - BTRFS file system;
  - Ceph distributed fi…&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Ubuntu:24.04:LTS: linux-azure-6.11, Ubuntu:24.04:LTS: linux-gcp-6.11, Ubuntu:24.04:LTS: linux-hwe-6.11, Ubuntu:24.04:LTS: linux-oem-6.11&lt;/p&gt;
&lt;p&gt;Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
  - ARM64 architecture;
  - PowerPC architecture;
  - x86 architecture;
  - Block layer subsystem;
  - Serial ATA and Parallel ATA drivers;
  - Drivers core;
  - Network block device driver;
  - Bluetooth drivers;
  - Character device driver;
  - TPM device driver;
  - Clock framework and drivers;
  - Hardware crypto device drivers;
  - FireWire subsystem;
  - EFI core;
  - Qualcomm firmware drivers;
  - GPIO subsystem;
  - GPU drivers;
  - HID subsystem;
  - I2C subsystem;
  - I3C subsystem;
  - InfiniBand drivers;
  - Input Device (Mouse) drivers;
  - IOMMU subsystem;
  - Multiple devices driver;
  - Media drivers;
  - NVIDIA Tegra memory controller driver;
  - Fastrpc Driver;
  - Network drivers;
  - Operating Performance Points (OPP) driver;
  - PCI subsystem;
  - x86 platform drivers;
  - PPS (Pulse Per Second) driver;
  - PTP clock framework;
  - Remote Processor subsystem;
  - Real Time Clock drivers;
  - S/390 drivers;
  - SCSI subsystem;
  - QCOM SoC drivers;
  - SPI subsystem;
  - Media staging drivers;
  - Trusted Execution Environment drivers;
  - TTY drivers;
  - UFS subsystem;
  - USB Device Class drivers;
  - USB core drivers;
  - USB Gadget drivers;
  - USB Host Controller drivers;
  - Framebuffer layer;
  - File systems infrastructure;
  - BTRFS file system;
  - Ceph distributed fi…&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/usn-7521-1</guid>
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