CVE-2023-52852

f2fs: compress: fix to avoid use-after-free on dic

State: Published
Severity: 7.8 High
Published: May 21, 2024
Updated: Aug 5, 2026
Reserved: May 21, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

f2fs: compress: fix to avoid use-after-free on dic

Call trace: __memcpy+0x128/0x250 f2fs_read_multi_pages+0x940/0xf7c f2fs_mpage_readpages+0x5a8/0x624 f2fs_readahead+0x5c/0x110 page_cache_ra_unbounded+0x1b8/0x590 do_sync_mmap_readahead+0x1dc/0x2e4 filemap_fault+0x254/0xa8c f2fs_filemap_fault+0x2c/0x104 __do_fault+0x7c/0x238 do_handle_mm_fault+0x11bc/0x2d14 do_mem_abort+0x3a8/0x1004 el0_da+0x3c/0xa0 el0t_64_sync_handler+0xc4/0xec el0t_64_sync+0x1b4/0x1b8

In f2fs_read_multi_pages(), once f2fs_decompress_cluster() was called if we hit cached page in compress_inode's cache, dic may be released, it needs break the loop rather than continuing it, in order to avoid accessing invalid dic pointer.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	6ce19aff0b8cd386860855185c6cd79337fc4d2b to before 8c4504cc0c64862740a6acb301e0cfa59580dbc5Affected 6ce19aff0b8cd386860855185c6cd79337fc4d2b to before 9375ea7f269093d7c884857ae1f47633a91f429cAffected 6ce19aff0b8cd386860855185c6cd79337fc4d2b to before 932ddb5c29e884cc6fac20417ece72ba4a35c401Affected 6ce19aff0b8cd386860855185c6cd79337fc4d2b to before 9d065aa52b6ee1b06f9c4eca881c9b4425a12ba2Affected 6ce19aff0b8cd386860855185c6cd79337fc4d2b to before b0327c84e91a0f4f0abced8cb83ec86a7083f086Affected a23706426da9b611be5beae0f3faa260fb453b4eAffected 5.13.19 to before 5.14Affected
LinuxLinux	5.14Affected before 5.14Not affected 5.15.139 through 5.15.Not affected 6.1.63 through 6.1.Not affected 6.5.12 through 6.5.Not affected 6.6.2 through 6.6.Not affected 6.7 and laterNot affected

Product

Versions

LinuxLinux

6ce19aff0b8cd386860855185c6cd79337fc4d2b to before 8c4504cc0c64862740a6acb301e0cfa59580dbc5Affected
6ce19aff0b8cd386860855185c6cd79337fc4d2b to before 9375ea7f269093d7c884857ae1f47633a91f429cAffected
6ce19aff0b8cd386860855185c6cd79337fc4d2b to before 932ddb5c29e884cc6fac20417ece72ba4a35c401Affected
6ce19aff0b8cd386860855185c6cd79337fc4d2b to before 9d065aa52b6ee1b06f9c4eca881c9b4425a12ba2Affected
6ce19aff0b8cd386860855185c6cd79337fc4d2b to before b0327c84e91a0f4f0abced8cb83ec86a7083f086Affected
a23706426da9b611be5beae0f3faa260fb453b4eAffected
5.13.19 to before 5.14Affected

LinuxLinux

5.14Affected
before 5.14Not affected
5.15.139 through 5.15.*Not affected
6.1.63 through 6.1.*Not affected
6.5.12 through 6.5.*Not affected
6.6.2 through 6.6.*Not affected
6.7 and laterNot affected

References

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