What’s Vulnerable › Vulnerabilities

CVE-2023-54192: f2fs: fix null pointer panic in tracepoint in __replace_atomic_write_block

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-30 · updated 2026-10-28

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix null pointer panic in tracepoint in __replace_atomic_write_block We got a kernel panic if old_addr is NULL. https://bugzilla.kernel.org/show_bug.cgi?id=217266 BUG: kernel NULL pointer dereference, address: 0000000000000000 Call Trace: <TASK> f2fs_commit_atomic_write+0x619/0x990 [f2fs a1b985b80f5babd6f3ea778384908880812bfa43] __f2fs_ioctl+0xd8e/0x4080 [f2fs a1b985b80f5babd6f3ea778384908880812bfa43] ? vfs_write+0x2ae/0x3f0 ? vfs_write+0x2ae/0x3f0 __x64_sys_ioctl+0x91/0xd0 do_syscall_64+0x5c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f69095fe53f

Affected products

• Linux kernel: from 6.1.18 before 6.1.29; from 6.2.5 before 6.2.16; 6.3 — fixed in 6.1.29, 6.2.16, 6.4

How to fix

Upgrade to a fixed version: Linux kernel 6.1.29, 6.2.16, 6.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1424358cd66c49460493293497b54cb72e0213cc
• https://git.kernel.org/stable/c/424f8cdc0ad29e4940be96dcc0b935ba497adeda
• https://git.kernel.org/stable/c/da6ea0b050fa720302b56fbb59307e7c7531a342
• https://git.kernel.org/stable/c/e2bbefc1741cb0732c13652be173da02f25611d1

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