# CVE-2024-42273: linux: In the Linux kernel, the following vulnerability has been resolved:  f2fs: assign CURSEG_ALL_DATA_ATGC if blkaddr is...

CVE-2024-42273 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-42273, released August 17, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-42273
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 17, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  f2fs: assign CURSEG_ALL_DATA_ATGC if blkaddr is valid  mkdir /mnt/test/comp f2fs_io setflags compression /mnt/test/comp dd if=/dev/zero of=/mnt/test/comp/testfile bs=16k count=1 truncate --size 13 /mnt/test/comp/testfile  In the above scenario, we can get a BUG_ON.  kernel BUG at fs/f2fs/segment.c:3589!  Call Trace:   do_write_page+0x78/0x390 [f2fs]   f2fs_outplace_write_data+0x62/0xb0 [f2fs]   f2fs_do_write_data_page+0x275/0x740 [f2fs]   f2fs_write_single_data_page+0x1dc/0x8f0 [f2fs]   f2fs_write_multi_pages+0x1e5/0xae0 [f2fs]   f2fs_write_cache_pages+0xab1/0xc60 [f2fs]   f2fs_write_data_pages+0x2d8/0x330 [f2fs]   do_writepages+0xcf/0x270   __writeback_single_inode+0x44/0x350   writeback_sb_inodes+0x242/0x530   __writeback_inodes_wb+0x54/0xf0   wb_writeback+0x192/0x310   wb_workfn+0x30d/0x400  The reason is we gave CURSEG_ALL_DATA_ATGC to COMPR_ADDR where the page was set the gcing flag by set_cluster_dirty().

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.106-1 | [DEBIAN-CVE-2024-42273](https://patchblox.com/security/data/fix/linux/debian-cve-2024-42273.md) | Aug 17, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.10.4-1 | [DEBIAN-CVE-2024-42273](https://patchblox.com/security/data/fix/linux/debian-cve-2024-42273.md) | Aug 17, 2024 |
| Linux | linux Debian 14 | 6.10.4-1 | [DEBIAN-CVE-2024-42273](https://patchblox.com/security/data/fix/linux/debian-cve-2024-42273.md) | Aug 17, 2024 |

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