ghsa-h679-44jj-3fx8
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
drm/virtio: fix NULL pointer dereference in virtio_gpu_conn_get_modes
drm_cvt_mode may return NULL and we should check it.
This bug is found by syzkaller:
FAULT_INJECTION stacktrace: [ 168.567394] FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 [ 168.567403] CPU: 1 PID: 6425 Comm: syz Kdump: loaded Not tainted 4.19.90-vhulk2201.1.0.h1035.kasan.eulerosv2r10.aarch64 #1 [ 168.567406] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 [ 168.567408] Call trace: [ 168.567414] dump_backtrace+0x0/0x310 [ 168.567418] show_stack+0x28/0x38 [ 168.567423] dump_stack+0xec/0x15c [ 168.567427] should_fail+0x3ac/0x3d0 [ 168.567437] __should_failslab+0xb8/0x120 [ 168.567441] should_failslab+0x28/0xc0 [ 168.567445] kmem_cache_alloc_trace+0x50/0x640 [ 168.567454] drm_mode_create+0x40/0x90 [ 168.567458] drm_cvt_mode+0x48/0xc78 [ 168.567477] virtio_gpu_conn_get_modes+0xa8/0x140 [virtio_gpu] [ 168.567485] drm_helper_probe_single_connector_modes+0x3a4/0xd80 [ 168.567492] drm_mode_getconnector+0x2e0/0xa70 [ 168.567496] drm_ioctl_kernel+0x11c/0x1d8 [ 168.567514] drm_ioctl+0x558/0x6d0 [ 168.567522] do_vfs_ioctl+0x160/0xf30 [ 168.567525] ksys_ioctl+0x98/0xd8 [ 168.567530] __arm64_sys_ioctl+0x50/0xc8 [ 168.567536] el0_svc_common+0xc8/0x320 [ 168.567540] el0_svc_handler+0xf8/0x160 [ 168.567544] el0_svc+0x10/0x218
KASAN stacktrace: [ 168.567561] BUG: KASAN: null-ptr-deref in virtio_gpu_conn_get_modes+0xb4/0x140 [virtio_gpu] [ 168.567565] Read of size 4 at addr 0000000000000054 by task syz/6425 [ 168.567566] [ 168.567571] CPU: 1 PID: 6425 Comm: syz Kdump: loaded Not tainted 4.19.90-vhulk2201.1.0.h1035.kasan.eulerosv2r10.aarch64 #1 [ 168.567573] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 [ 168.567575] Call trace: [ 168.567578] dump_backtrace+0x0/0x310 [ 168.567582] show_stack+0x28/0x38 [ 168.567586] dump_stack+0xec/0x15c [ 168.567591] kasan_report+0x244/0x2f0 [ 168.567594] __asan_load4+0x58/0xb0 [ 168.567607] virtio_gpu_conn_get_modes+0xb4/0x140 [virtio_gpu] [ 168.567612] drm_helper_probe_single_connector_modes+0x3a4/0xd80 [ 168.567617] drm_mode_getconnector+0x2e0/0xa70 [ 168.567621] drm_ioctl_kernel+0x11c/0x1d8 [ 168.567624] drm_ioctl+0x558/0x6d0 [ 168.567628] do_vfs_ioctl+0x160/0xf30 [ 168.567632] ksys_ioctl+0x98/0xd8 [ 168.567636] __arm64_sys_ioctl+0x50/0xc8 [ 168.567641] el0_svc_common+0xc8/0x320 [ 168.567645] el0_svc_handler+0xf8/0x160 [ 168.567649] el0_svc+0x10/0x218
{
"affected": [],
"aliases": [
"CVE-2022-49532"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-26T07:01:29Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/virtio: fix NULL pointer dereference in virtio_gpu_conn_get_modes\n\ndrm_cvt_mode may return NULL and we should check it.\n\nThis bug is found by syzkaller:\n\nFAULT_INJECTION stacktrace:\n[ 168.567394] FAULT_INJECTION: forcing a failure.\nname failslab, interval 1, probability 0, space 0, times 1\n[ 168.567403] CPU: 1 PID: 6425 Comm: syz Kdump: loaded Not tainted 4.19.90-vhulk2201.1.0.h1035.kasan.eulerosv2r10.aarch64 #1\n[ 168.567406] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015\n[ 168.567408] Call trace:\n[ 168.567414] dump_backtrace+0x0/0x310\n[ 168.567418] show_stack+0x28/0x38\n[ 168.567423] dump_stack+0xec/0x15c\n[ 168.567427] should_fail+0x3ac/0x3d0\n[ 168.567437] __should_failslab+0xb8/0x120\n[ 168.567441] should_failslab+0x28/0xc0\n[ 168.567445] kmem_cache_alloc_trace+0x50/0x640\n[ 168.567454] drm_mode_create+0x40/0x90\n[ 168.567458] drm_cvt_mode+0x48/0xc78\n[ 168.567477] virtio_gpu_conn_get_modes+0xa8/0x140 [virtio_gpu]\n[ 168.567485] drm_helper_probe_single_connector_modes+0x3a4/0xd80\n[ 168.567492] drm_mode_getconnector+0x2e0/0xa70\n[ 168.567496] drm_ioctl_kernel+0x11c/0x1d8\n[ 168.567514] drm_ioctl+0x558/0x6d0\n[ 168.567522] do_vfs_ioctl+0x160/0xf30\n[ 168.567525] ksys_ioctl+0x98/0xd8\n[ 168.567530] __arm64_sys_ioctl+0x50/0xc8\n[ 168.567536] el0_svc_common+0xc8/0x320\n[ 168.567540] el0_svc_handler+0xf8/0x160\n[ 168.567544] el0_svc+0x10/0x218\n\nKASAN stacktrace:\n[ 168.567561] BUG: KASAN: null-ptr-deref in virtio_gpu_conn_get_modes+0xb4/0x140 [virtio_gpu]\n[ 168.567565] Read of size 4 at addr 0000000000000054 by task syz/6425\n[ 168.567566]\n[ 168.567571] CPU: 1 PID: 6425 Comm: syz Kdump: loaded Not tainted 4.19.90-vhulk2201.1.0.h1035.kasan.eulerosv2r10.aarch64 #1\n[ 168.567573] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015\n[ 168.567575] Call trace:\n[ 168.567578] dump_backtrace+0x0/0x310\n[ 168.567582] show_stack+0x28/0x38\n[ 168.567586] dump_stack+0xec/0x15c\n[ 168.567591] kasan_report+0x244/0x2f0\n[ 168.567594] __asan_load4+0x58/0xb0\n[ 168.567607] virtio_gpu_conn_get_modes+0xb4/0x140 [virtio_gpu]\n[ 168.567612] drm_helper_probe_single_connector_modes+0x3a4/0xd80\n[ 168.567617] drm_mode_getconnector+0x2e0/0xa70\n[ 168.567621] drm_ioctl_kernel+0x11c/0x1d8\n[ 168.567624] drm_ioctl+0x558/0x6d0\n[ 168.567628] do_vfs_ioctl+0x160/0xf30\n[ 168.567632] ksys_ioctl+0x98/0xd8\n[ 168.567636] __arm64_sys_ioctl+0x50/0xc8\n[ 168.567641] el0_svc_common+0xc8/0x320\n[ 168.567645] el0_svc_handler+0xf8/0x160\n[ 168.567649] el0_svc+0x10/0x218",
"id": "GHSA-h679-44jj-3fx8",
"modified": "2025-03-10T21:31:09Z",
"published": "2025-03-10T21:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49532"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0f8bc147a963686b7351aa35d1701124ffacac08"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/194d250cdc4a40ccbd179afd522a9e9846957402"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/32e10aabc287f09a148ff759bb9ce70b01b0012c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/848dd072744ea662ab3097e3c8282bee552df218"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c51d00472fa54b9b05c17789ed665c17adf3a25d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e0828456578cc8ba0a69147f7ae3428392eec287"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/edafcad84c4134ebec4bc24b29ca4497a1184eea"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f85cb059fad03a3b33a50023be91e944bb065ae8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fadc626cae99aaa1325094edc6a9e2b883f3e562"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
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