CVE-2025-38226

media: vivid: Change the siize of the composing

State: Published
Severity: 7.8 High
Published: Jul 4, 2025
Updated: Aug 5, 2026
Reserved: Apr 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

media: vivid: Change the siize of the composing

syzkaller found a bug:

BUG: KASAN: vmalloc-out-of-bounds in tpg_fill_plane_pattern drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:2608 [inline] BUG: KASAN: vmalloc-out-of-bounds in tpg_fill_plane_buffer+0x1a9c/0x5af0 drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:2705 Write of size 1440 at addr ffffc9000d0ffda0 by task vivid-000-vid-c/5304

CPU: 0 UID: 0 PID: 5304 Comm: vivid-000-vid-c Not tainted 6.14.0-rc2-syzkaller-00039-g09fbf3d50205 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014

Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x169/0x550 mm/kasan/report.c:489 kasan_report+0x143/0x180 mm/kasan/report.c:602 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 __asan_memcpy+0x40/0x70 mm/kasan/shadow.c:106 tpg_fill_plane_pattern drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:2608 [inline] tpg_fill_plane_buffer+0x1a9c/0x5af0 drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:2705 vivid_fillbuff drivers/media/test-drivers/vivid/vivid-kthread-cap.c:470 [inline] vivid_thread_vid_cap_tick+0xf8e/0x60d0 drivers/media/test-drivers/vivid/vivid-kthread-cap.c:629 vivid_thread_vid_cap+0x8aa/0xf30 drivers/media/test-drivers/vivid/vivid-kthread-cap.c:767 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK>

The composition size cannot be larger than the size of fmt_cap_rect. So execute v4l2_rect_map_inside() even if has_compose_cap == 0.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	54f259906039dbfe46c550011409fa16f72370f6 to before 57597d8db5bbda618ba2145b7e8a7e6f01b6a27eAffected f9d19f3a044ca651b0be52a4bf951ffe74259b9f to before 635cea4f44c1ddae208666772c164eab5a6bce39Affected ab54081a2843aefb837812fac5488cc8f1696142 to before 89b5ab822bf69867c3951dd0eb34b0314c38966bAffected 2f558c5208b0f70c8140e08ce09fcc84da48e789 to before 5d89aa42534723400fefd46e26e053b9c382b4eeAffected 94a7ad9283464b75b12516c5512541d467cefcf8 to before f6b1b0f8ba0b61d8b511df5649d57235f230c135Affected 94a7ad9283464b75b12516c5512541d467cefcf8 to before 00da1c767a6567e56f23dda586847586868ac064Affected 94a7ad9283464b75b12516c5512541d467cefcf8 to before c56398885716d97ee9bcadb2bc9663a8c1757a34Affected 94a7ad9283464b75b12516c5512541d467cefcf8 to before f83ac8d30c43fd902af7c84c480f216157b60ef0Affected 8c0ee15d9a102c732d0745566d254040085d5663Affected 5edc3604151919da8da0fb092b71d7dce07d848aAffected 9c7fba9503b826f0c061d136f8f0c9f953ed18b9Affected ccb5392c4fea0e7d9f7ab35567e839d74cb3998bAffected 5.4.229 to before 5.4.296Affected 5.10.163 to before 5.10.239Affected 5.15.86 to before 5.15.186Affected 6.1.2 to before 6.1.142Affected 4.9.337 to before 4.10Affected 4.14.303 to before 4.15Affected 4.19.270 to before 4.20Affected 6.0.16 to before 6.1Affected
LinuxLinux	6.2Affected before 6.2Not affected 5.4.296 through 5.4.Not affected 5.10.239 through 5.10.Not affected 5.15.186 through 5.15.Not affected 6.1.142 through 6.1.Not affected 6.6.95 through 6.6.Not affected 6.12.35 through 6.12.Not affected 6.15.4 through 6.15.*Not affected 6.16 and laterNot affected

Product

Versions

LinuxLinux

54f259906039dbfe46c550011409fa16f72370f6 to before 57597d8db5bbda618ba2145b7e8a7e6f01b6a27eAffected
f9d19f3a044ca651b0be52a4bf951ffe74259b9f to before 635cea4f44c1ddae208666772c164eab5a6bce39Affected
ab54081a2843aefb837812fac5488cc8f1696142 to before 89b5ab822bf69867c3951dd0eb34b0314c38966bAffected
2f558c5208b0f70c8140e08ce09fcc84da48e789 to before 5d89aa42534723400fefd46e26e053b9c382b4eeAffected
94a7ad9283464b75b12516c5512541d467cefcf8 to before f6b1b0f8ba0b61d8b511df5649d57235f230c135Affected
94a7ad9283464b75b12516c5512541d467cefcf8 to before 00da1c767a6567e56f23dda586847586868ac064Affected
94a7ad9283464b75b12516c5512541d467cefcf8 to before c56398885716d97ee9bcadb2bc9663a8c1757a34Affected
94a7ad9283464b75b12516c5512541d467cefcf8 to before f83ac8d30c43fd902af7c84c480f216157b60ef0Affected
8c0ee15d9a102c732d0745566d254040085d5663Affected
5edc3604151919da8da0fb092b71d7dce07d848aAffected
9c7fba9503b826f0c061d136f8f0c9f953ed18b9Affected
ccb5392c4fea0e7d9f7ab35567e839d74cb3998bAffected
5.4.229 to before 5.4.296Affected
5.10.163 to before 5.10.239Affected
5.15.86 to before 5.15.186Affected
6.1.2 to before 6.1.142Affected
4.9.337 to before 4.10Affected
4.14.303 to before 4.15Affected
4.19.270 to before 4.20Affected
6.0.16 to before 6.1Affected

LinuxLinux

6.2Affected
before 6.2Not affected
5.4.296 through 5.4.*Not affected
5.10.239 through 5.10.*Not affected
5.15.186 through 5.15.*Not affected
6.1.142 through 6.1.*Not affected
6.6.95 through 6.6.*Not affected
6.12.35 through 6.12.*Not affected
6.15.4 through 6.15.*Not affected
6.16 and laterNot affected

References

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