# CVE-2022-48945: linux: In the Linux kernel, the following vulnerability has been resolved:  media: vivid: fix compose size exceed boundary...

CVE-2022-48945 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48945, released September 23, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-48945
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0022
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 23, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  media: vivid: fix compose size exceed boundary  syzkaller found a bug:   BUG: unable to handle page fault for address: ffffc9000a3b1000  #PF: supervisor write access in kernel mode  #PF: error_code(0x0002) - not-present page  PGD 100000067 P4D 100000067 PUD 10015f067 PMD 1121ca067 PTE 0  Oops: 0002 [#1] PREEMPT SMP  CPU: 0 PID: 23489 Comm: vivid-000-vid-c Not tainted 6.1.0-rc1+ #512  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014  RIP: 0010:memcpy_erms+0x6/0x10 [...]  Call Trace:   <TASK>   ? tpg_fill_plane_buffer+0x856/0x15b0   vivid_fillbuff+0x8ac/0x1110   vivid_thread_vid_cap_tick+0x361/0xc90   vivid_thread_vid_cap+0x21a/0x3a0   kthread+0x143/0x180   ret_from_fork+0x1f/0x30   </TASK>  This is because we forget to check boundary after adjust compose->height int V4L2_SEL_TGT_CROP case. Add v4l2_rect_map_inside() to fix this problem for this case.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2022-48945](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48945.md) | Sep 23, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2022-48945](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48945.md) | Sep 23, 2024 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2022-48945](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48945.md) | Sep 23, 2024 |

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