CVE-2022-48945
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:…
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.22% probability · 12th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2f558c5208b0f70c8140e08ce09fcc84da48e789Patch
- https://git.kernel.org/stable/c/54f259906039dbfe46c550011409fa16f72370f6Patch
- https://git.kernel.org/stable/c/5edc3604151919da8da0fb092b71d7dce07d848aPatch
- https://git.kernel.org/stable/c/8c0ee15d9a102c732d0745566d254040085d5663Patch
- https://git.kernel.org/stable/c/94a7ad9283464b75b12516c5512541d467cefcf8Patch
- https://git.kernel.org/stable/c/9c7fba9503b826f0c061d136f8f0c9f953ed18b9Patch
- https://git.kernel.org/stable/c/ab54081a2843aefb837812fac5488cc8f1696142Patch
- https://git.kernel.org/stable/c/ccb5392c4fea0e7d9f7ab35567e839d74cb3998bPatch
- https://git.kernel.org/stable/c/f9d19f3a044ca651b0be52a4bf951ffe74259b9fPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.