CVE-2026-23326
High · 7.8CVSS
7.8
EPSS
0.1%
Published
Mar 25, 2026
CISA due date
—
The record
In the Linux kernel, the following vulnerability has been resolved: xsk: Fix fragment node deletion to prevent buffer leak After commit b692bf9a7543 ("xsk: Get rid of xdp_buff_xsk::xskb_list_node"), the list_node field is reused for both the xskb pool list and the buffer free list, this causes a buffer leak as described below. xp_free() checks if a buffer is already on the free list using list_empty(&xskb->list_node). When list_del() is used to remove a node from the xskb pool list, it doesn't reinitialize the node pointers. This means list_empty() will return false even after the node has been removed, causing xp_free() to incorrectly skip adding the buffer to the free list. Fix this by using list_del_init() instead of list_del() in all fragment handling paths, this ensures the list node is reinitialized after removal, allowing the list_empty() to work correctly.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| openSUSE:Leap 16.0 | dtb-aarch64 | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-64kb | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-azure | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-default | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-default-base | 0 | 6.12.0-160000.27.1.160000.2.8 |
| openSUSE:Leap 16.0 | kernel-docs | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-kvmsmall | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-obs-build | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-obs-qa | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-rt | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-source | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-syms | 0 | 6.12.0-160000.28.1 |
| openSUSE:Leap 16.0 | kernel-zfcpdump | 0 | 6.12.0-160000.28.1 |
Related vulnerabilities
- CVE-2026-46317 In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Reassign… Also affects dtb-aarch64
- CVE-2026-46316 In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its… Also affects dtb-aarch64
- CVE-2026-46181 In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx4: Fix… Also affects dtb-aarch64
- CVE-2026-46176 In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix error… Also affects dtb-aarch64
- CVE-2026-46159 In the Linux kernel, the following vulnerability has been resolved: btrfs: fix… Also affects dtb-aarch64
- CVE-2026-46114 In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Reject… Also affects dtb-aarch64
- CVE-2026-46090 In the Linux kernel, the following vulnerability has been resolved: ALSA: aloop: Fix peer… Also affects dtb-aarch64
- CVE-2026-46094 In the Linux kernel, the following vulnerability has been resolved: ext4: fix bounds… Also affects dtb-aarch64