CVE-2022-48945
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | ef834f7836ec0502f49f20bbc42f1240577a9c83 < 8c0ee15d9a102c732d0745566d254040085d5663 | affected |
| Linux | Linux | ef834f7836ec0502f49f20bbc42f1240577a9c83 < 5edc3604151919da8da0fb092b71d7dce07d848a | affected |
| Linux | Linux | ef834f7836ec0502f49f20bbc42f1240577a9c83 < 9c7fba9503b826f0c061d136f8f0c9f953ed18b9 | affected |
| Linux | Linux | ef834f7836ec0502f49f20bbc42f1240577a9c83 < 54f259906039dbfe46c550011409fa16f72370f6 | affected |
| Linux | Linux | ef834f7836ec0502f49f20bbc42f1240577a9c83 < f9d19f3a044ca651b0be52a4bf951ffe74259b9f | affected |
| Linux | Linux | ef834f7836ec0502f49f20bbc42f1240577a9c83 < ab54081a2843aefb837812fac5488cc8f1696142 | affected |
| Linux | Linux | ef834f7836ec0502f49f20bbc42f1240577a9c83 < ccb5392c4fea0e7d9f7ab35567e839d74cb3998b | affected |
| Linux | Linux | ef834f7836ec0502f49f20bbc42f1240577a9c83 < 2f558c5208b0f70c8140e08ce09fcc84da48e789 | affected |
| Linux | Linux | ef834f7836ec0502f49f20bbc42f1240577a9c83 < 94a7ad9283464b75b12516c5512541d467cefcf8 | affected |
| Linux | Linux | 3.18 | affected |
| Linux | Linux | 0 < 3.18 | unaffected |
| Linux | Linux | 4.9.337 <= 4.9.* | unaffected |
| Linux | Linux | 4.14.303 <= 4.14.* | unaffected |
| Linux | Linux | 4.19.270 <= 4.19.* | unaffected |
| Linux | Linux | 5.4.229 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.163 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.86 <= 5.15.* | unaffected |
| Linux | Linux | 6.0.16 <= 6.0.* | unaffected |
| Linux | Linux | 6.1.2 <= 6.1.* | unaffected |
| Linux | Linux | 6.2 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://git.kernel.org/stable/c/8c0ee15d9a102c732d0745566d254040085d5663
- https://git.kernel.org/stable/c/5edc3604151919da8da0fb092b71d7dce07d848a
- https://git.kernel.org/stable/c/9c7fba9503b826f0c061d136f8f0c9f953ed18b9
- https://git.kernel.org/stable/c/54f259906039dbfe46c550011409fa16f72370f6
- https://git.kernel.org/stable/c/f9d19f3a044ca651b0be52a4bf951ffe74259b9f
- https://git.kernel.org/stable/c/ab54081a2843aefb837812fac5488cc8f1696142
- https://git.kernel.org/stable/c/ccb5392c4fea0e7d9f7ab35567e839d74cb3998b
- https://git.kernel.org/stable/c/2f558c5208b0f70c8140e08ce09fcc84da48e789
- https://git.kernel.org/stable/c/94a7ad9283464b75b12516c5512541d467cefcf8
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