🛡️ UBUNTU-CVE-2025-68796
⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid updating zero-sized extent in extent cache As syzbot reported: F2FS-fs (loop0): __update_extent_tree_range: extent len is zero, type: 0, extent [0, 0, 0], age [0, 0] ------------[ cut here ]------------ kernel BUG at fs/f2fs/extent_cache.c:678! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__update_extent_tree_range+0x13bc/0x1500 fs/f2fs/extent_cache.c:678 Call Trace: f2fs_update_read_extent_cache_range+0x192/0x3e0 fs/f2fs/extent_cache.c:1085 f2fs_do_zero_range fs/f2fs/file.c:1657 [inline] f2fs_zero_range+0x10c1/0x1580 fs/f2fs/file.c:1737 f2fs_fallocate+0x583/0x990 fs/f2fs/file.c:2030 vfs_fallocate+0x669/0x7e0 fs/open.c:342 ioctl_preallocate fs/ioctl.c:289 [inline] file_ioctl+0x611/0x780 fs/ioctl.c:-1 do_vfs_ioctl+0xb33/0x1430 fs/ioctl.c:576 __do_sys_ioctl fs/ioctl.c:595 [inline] __se_sys_ioctl+0x82/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f07bc58eec9 In error path of f2fs_zero_range(), it may add a zero-sized extent into extent cache, it should be avoided.

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-01-13
Updated 2026-06-15
Modified 2026-06-08
Fix URL N/A

Affected Packages

Software From version Fixed in
linux 6.17.0-22.22
linux-allwinner-5.19
linux-aws 6.17.0-1012.12
linux-aws-5.0
linux-aws-5.11
linux-aws-5.13
linux-aws-5.15 5.15.0-1103.110~20.04.1
linux-aws-5.19
linux-aws-5.3
linux-aws-5.4
linux-aws-5.8
linux-aws-6.14
linux-aws-6.17 6.17.0-1012.12~24.04.1
linux-aws-6.2
linux-aws-6.5
linux-aws-6.8 6.8.0-1052.55~22.04.1
linux-aws-fips 6.8.0-1052.55+fips1
linux-aws-hwe
linux-azure 6.17.0-1013.13
linux-azure-4.15
linux-azure-5.11
linux-azure-5.13
linux-azure-5.15 5.15.0-1110.119~20.04.1
linux-azure-5.19
linux-azure-5.3
linux-azure-5.4
linux-azure-5.8
linux-azure-6.11
linux-azure-6.14
linux-azure-6.17 6.17.0-1013.13~24.04.1
linux-azure-6.2
linux-azure-6.5
linux-azure-6.8
linux-azure-edge
linux-azure-fde
linux-azure-fde-5.15
linux-azure-fde-5.19
linux-azure-fde-6.14
linux-azure-fde-6.17
linux-azure-fde-6.2
linux-azure-fde-6.8
linux-azure-fips 6.8.0-1053.59+fips1
linux-azure-nvidia
linux-azure-nvidia-6.14
linux-bluefield
linux-fips 6.8.0-110.110+fips2
linux-gcp 6.17.0-1012.12
linux-gcp-4.15
linux-gcp-5.11
linux-gcp-5.13
linux-gcp-5.15 5.15.0-1103.112~20.04.1
linux-gcp-5.19
linux-gcp-5.3
linux-gcp-5.4
linux-gcp-5.8
linux-gcp-6.11
linux-gcp-6.14
linux-gcp-6.17 6.17.0-1012.12~24.04.1
linux-gcp-6.2
linux-gcp-6.5
linux-gcp-6.8 6.8.0-1054.57~22.04.1
linux-gcp-fips 6.8.0-1054.57+fips1
linux-gke 6.8.0-1050.56
linux-gke-4.15
linux-gke-5.15
linux-gke-5.4
linux-gkeop 6.8.0-1037.40
linux-gkeop-5.15
linux-gkeop-5.4
linux-hwe
linux-hwe-5.11
linux-hwe-5.13
linux-hwe-5.15 5.15.0-173.183~20.04.1
linux-hwe-5.19
linux-hwe-5.4
linux-hwe-5.8
linux-hwe-6.11
linux-hwe-6.14
linux-hwe-6.17 6.17.0-22.22~24.04.1
linux-hwe-6.2
linux-hwe-6.5
linux-hwe-6.8 6.8.0-110.110~22.04.1
linux-hwe-edge
linux-ibm 6.8.0-1051.51
linux-ibm-5.15 5.15.0-1097.100~20.04.1
linux-ibm-5.4
linux-ibm-6.8 6.8.0-1051.51~22.04.1
linux-intel-5.13
linux-intel-iot-realtime 5.15.0-1094.96
linux-intel-iotg 5.15.0-1098.104
linux-intel-iotg-5.15 5.15.0-1098.104~20.04.1
linux-iot
linux-kvm 5.15.0-1095.100
linux-lowlatency 6.8.0-110.110.1
linux-lowlatency-hwe-5.15 5.15.0-173.183~20.04.1
linux-lowlatency-hwe-5.19
linux-lowlatency-hwe-6.11
linux-lowlatency-hwe-6.2
linux-lowlatency-hwe-6.5
linux-lowlatency-hwe-6.8 6.8.0-110.110.1~22.04.1
linux-lts-xenial
linux-nvidia 6.8.0-1051.54
linux-nvidia-6.11
linux-nvidia-6.17 6.17.0-1018.18
linux-nvidia-6.2
linux-nvidia-6.5
linux-nvidia-6.8 6.8.0-1051.54~22.04.1
linux-nvidia-lowlatency 6.8.0-1051.54.1
linux-nvidia-tegra 6.8.0-1022.22
linux-nvidia-tegra-5.15 5.15.0-1055.55~20.04.1
linux-nvidia-tegra-igx 5.15.0-1044.44
linux-oem
linux-oem-5.10
linux-oem-5.13
linux-oem-5.14
linux-oem-5.17
linux-oem-5.6
linux-oem-6.0
linux-oem-6.1
linux-oem-6.11
linux-oem-6.14
linux-oem-6.17 6.17.0-1020.20
linux-oem-6.5
linux-oem-6.8
linux-oracle 6.17.0-1011.11
linux-oracle-5.0
linux-oracle-5.11
linux-oracle-5.13
linux-oracle-5.15 5.15.0-1100.106~20.04.1
linux-oracle-5.3
linux-oracle-5.4
linux-oracle-5.8
linux-oracle-6.14
linux-oracle-6.17 6.17.0-1011.11~24.04.1
linux-oracle-6.5
linux-oracle-6.8 6.8.0-1049.50~22.04.1
linux-raspi 6.17.0-1013.13
linux-raspi-5.4
linux-raspi-realtime 6.8.0-2042.43
linux-raspi2
linux-realtime 6.17.0-1010.11
linux-realtime-6.14
linux-realtime-6.17 6.17.0-1010.11~24.04.1
linux-realtime-6.8 6.8.1-1047.48~22.04.1
linux-riscv 6.17.0-22.22.1
linux-riscv-5.11
linux-riscv-5.15 5.15.0-1097.101~20.04.1
linux-riscv-5.19
linux-riscv-5.8
linux-riscv-6.14
linux-riscv-6.17 6.17.0-22.22.1~24.04.1
linux-riscv-6.5
linux-riscv-6.8 6.8.0-110.110~22.04.1
linux-starfive-5.19
linux-starfive-6.2
linux-starfive-6.5
linux-xilinx 6.8.0-1028.29
linux-xilinx-zynqmp 5.15.0-1067.71

References

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