CVE-2023-53537: In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid use-after-free for cached IPU bio xfstest generic/019 reports a bug…

PriorityP340high7.8CVSS 3.1

AVLACLPRLUINSUCHIHAH

EPSS

0.15%

4.6th percentile

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid use-after-free for cached IPU bio xfstest generic/019 reports a bug: kernel BUG at mm/filemap.c:1619! RIP: 0010:folio_end_writeback+0x8a/0x90 Call Trace: end_page_writeback+0x1c/0x60 f2fs_write_end_io+0x199/0x420 bio_endio+0x104/0x180 submit_bio_noacct+0xa5/0x510 submit_bio+0x48/0x80 f2fs_submit_write_bio+0x35/0x300 f2fs_submit_merged_ipu_write+0x2a0/0x2b0 f2fs_write_single_data_page+0x838/0x8b0 f2fs_write_cache_pages+0x379/0xa30 f2fs_write_data_pages+0x30c/0x340 do_writepages+0xd8/0x1b0 __writeback_single_inode+0x44/0x370 writeback_sb_inodes+0x233/0x4d0 __writeback_inodes_wb+0x56/0xf0 wb_writeback+0x1dd/0x2d0 wb_workfn+0x367/0x4a0 process_one_work+0x21d/0x430 worker_thread+0x4e/0x3c0 kthread+0x103/0x130 ret_from_fork+0x2c/0x50 The root cause is: after cp_error is set, f2fs_submit_merged_ipu_write() in f2fs_write_single_data_page() tries to flush IPU bio in cache, however f2fs_submit_merged_ipu_write() missed to check validity of @bio parameter, result in submitting random cached bio which belong to other IO context, then it will cause use-after-free issue, fix it by adding additional validity check.

Affected

17 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.1.37-1 (bookworm)	linux 6.1.37-1 (bookworm)
linux	linux	—	—
linux	linux	>= 0b20fcec8651569935a10afe03fedc0b812d044e < b2f423fda64fb49213aa0ed5056079cf295a5df2	b2f423fda64fb49213aa0ed5056079cf295a5df2
linux	linux	>= 0b20fcec8651569935a10afe03fedc0b812d044e < 9a7f63283af6befc0f91d549f4f6917dff7479a9	9a7f63283af6befc0f91d549f4f6917dff7479a9
linux	linux	>= 0b20fcec8651569935a10afe03fedc0b812d044e < 7d058f0ab161437369ad6e45a4b67c2886e71373	7d058f0ab161437369ad6e45a4b67c2886e71373
linux	linux	>= 0b20fcec8651569935a10afe03fedc0b812d044e < 97ec6f1788cc6bee3f8c89cb908e1a2a1cd859bb	97ec6f1788cc6bee3f8c89cb908e1a2a1cd859bb
linux	linux	>= 0b20fcec8651569935a10afe03fedc0b812d044e < af4ce124d7bd74cb839bbdaccffbb416771a56b5	af4ce124d7bd74cb839bbdaccffbb416771a56b5
linux	linux	>= 0b20fcec8651569935a10afe03fedc0b812d044e < 5cdb422c839134273866208dad5360835ddb9794	5cdb422c839134273866208dad5360835ddb9794
linux	linux_kernel	>= 0 < 5.10.191-1	5.10.191-1
linux	linux_kernel	>= 0 < 6.1.37-1	6.1.37-1
linux	linux_kernel	>= 0 < 6.3.7-1	6.3.7-1
linux	linux_kernel	>= 0 < 6.3.7-1	6.3.7-1
linux	linux_kernel	>= 5.11 < 5.15.111	5.15.111
linux	linux_kernel	>= 5.16 < 6.1.28	6.1.28
linux	linux_kernel	>= 5.5 < 5.10.180	5.10.180
linux	linux_kernel	>= 6.2 < 6.2.15	6.2.15
linux	linux_kernel	>= 6.3 < 6.3.2	6.3.2

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

osv7.8HIGH

vendor_debian7.8HIGH

vendor_redhat7.8HIGH

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