CVE-2025-40244 — Improper Initialization in Linux

CWE-665 — Improper Initialization55 documents7 sources
Severity
7.8HIGHOSV
OSV5.5OSV3.2
No vector
EPSS
0.0%
top 85.67%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
LinuxLinux KernelDebian Linux+1 more
Timeline
PublishedDec 4
Latest updateApr 13

Description

In the Linux kernel, the following vulnerability has been resolved: hfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent() The syzbot reported issue in __hfsplus_ext_cache_extent(): [ 70.194323][ T9350] BUG: KMSAN: uninit-value in __hfsplus_ext_cache_extent+0x7d0/0x990 [ 70.195022][ T9350] __hfsplus_ext_cache_extent+0x7d0/0x990 [ 70.195530][ T9350] hfsplus_file_extend+0x74f/0x1cf0 [ 70.195998][ T9350] hfsplus_get_block+0xe16/0x17b0 [ 70.196458][ T9350] __block_write_begin_int+0…

Affected Packages6 packages

▶Linuxlinux/linux_kernel2.6.12 — 5.4.301+6
▶Debianlinux/linux_kernel< 5.10.247-1+3
▶Ubuntulinux/linux_kernel< 5.15.0-170.180+2
▶CVEListV5linux/linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 — c1ec90bed504640a42bb20a5f413be39cd17ad71+8

🔴Vulnerability Details

27
OSV
linux-raspi vulnerabilities↗2026-04-01
▶
OSV
linux-raspi, linux-raspi-realtime vulnerabilities↗2026-04-01
▶
OSV
linux-azure-6.8 vulnerabilities↗2026-03-25
▶
OSV
linux-azure vulnerabilities↗2026-03-25
▶
OSV
linux-aws-6.8 vulnerabilities↗2026-03-23
▶

📋Vendor Advisories

27
Ubuntu
Linux kernel (Azure) vulnerabilities↗2026-04-13
▶
Ubuntu
Linux kernel (Azure FIPS) vulnerabilities↗2026-04-09
▶
Ubuntu
Linux kernel (Azure FIPS) vulnerabilities↗2026-04-09
▶
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities↗2026-04-01
▶
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities↗2026-04-01
▶
CVE-2025-40244 — Improper Initialization in Linux | cvebase