CVE-2024-53221

f2fs: fix null-ptr-deref in f2fs_submit_page_bio()

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix null-ptr-deref in f2fs_submit_page_bio() There's issue as follows when concurrently installing the f2fs.ko module and mounting the f2fs file system: KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] RIP: 0010:__bio_alloc+0x2fb/0x6c0 [f2fs] Call Trace: <TASK> f2fs_submit_page_bio+0x126/0x8b0 [f2fs] __get_meta_page+0x1d4/0x920 [f2fs] get_checkpoint_version.constprop.0+0x2b/0x3c0 [f2fs] validate_checkpoint+0xac/0x290 [f2fs] f2fs_get_valid_checkpoint+0x207/0x950 [f2fs] f2fs_fill_super+0x1007/0x39b0 [f2fs] mount_bdev+0x183/0x250 legacy_get_tree+0xf4/0x1e0 vfs_get_tree+0x88/0x340 do_new_mount+0x283/0x5e0 path_mount+0x2b2/0x15b0 __x64_sys_mount+0x1fe/0x270 do_syscall_64+0x5f/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e Above issue happens as the biset of the f2fs file system is not initialized before register "f2fs_fs_type". To address above issue just register "f2fs_fs_type" at the last in init_f2fs_fs(). Ensure that all f2fs file system resources are initialized.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/8dddc12d03248755d9f709bc1eb9e3ea2bf1b322
https://git.kernel.org/stable/c/32f5e291b7677495f98246eec573767430321c08 patch
https://git.kernel.org/stable/c/9e11b1d5fda972f6be60ab732976a7c8e064cd56 patch
https://git.kernel.org/stable/c/b7d0a97b28083084ebdd8e5c6bccd12e6ec18faa patch

Frequently Asked Questions

What is the severity of CVE-2024-53221?
CVE-2024-53221 has been scored as a medium severity vulnerability.
How to fix CVE-2024-53221?
To fix CVE-2024-53221, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-53221 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-53221 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-53221?
CVE-2024-53221 affects Linux Linux, Linux Linux.
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