ghsa-xgjf-869w-4cgj
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
media: vidtv: Fix a null-ptr-deref in vidtv_mux_stop_thread
syzbot report a null-ptr-deref in vidtv_mux_stop_thread. [1]
If dvb->mux is not initialized successfully by vidtv_mux_init() in the vidtv_start_streaming(), it will trigger null pointer dereference about mux in vidtv_mux_stop_thread().
Adjust the timing of streaming initialization and check it before stopping it.
[1] KASAN: null-ptr-deref in range [0x0000000000000128-0x000000000000012f] CPU: 0 UID: 0 PID: 5842 Comm: syz-executor248 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:vidtv_mux_stop_thread+0x26/0x80 drivers/media/test-drivers/vidtv/vidtv_mux.c:471 Code: 90 90 90 90 66 0f 1f 00 55 53 48 89 fb e8 82 2e c8 f9 48 8d bb 28 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 02 7e 3b 0f b6 ab 28 01 00 00 31 ff 89 ee e8 RSP: 0018:ffffc90003f2faa8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87cfb125 RDX: 0000000000000025 RSI: ffffffff87d120ce RDI: 0000000000000128 RBP: ffff888029b8d220 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000003 R12: ffff888029b8d188 R13: ffffffff8f590aa0 R14: ffffc9000581c5c8 R15: ffff888029a17710 FS: 00007f7eef5156c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7eef5e635c CR3: 0000000076ca6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vidtv_stop_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:209 [inline] vidtv_stop_feed+0x151/0x250 drivers/media/test-drivers/vidtv/vidtv_bridge.c:252 dmx_section_feed_stop_filtering+0x90/0x160 drivers/media/dvb-core/dvb_demux.c:1000 dvb_dmxdev_feed_stop.isra.0+0x1ee/0x270 drivers/media/dvb-core/dmxdev.c:486 dvb_dmxdev_filter_stop+0x22a/0x3a0 drivers/media/dvb-core/dmxdev.c:559 dvb_dmxdev_filter_free drivers/media/dvb-core/dmxdev.c:840 [inline] dvb_demux_release+0x92/0x550 drivers/media/dvb-core/dmxdev.c:1246 __fput+0x3f8/0xb60 fs/file_table.c:450 task_work_run+0x14e/0x250 kernel/task_work.c:239 get_signal+0x1d3/0x2610 kernel/signal.c:2790 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f
{
"affected": [],
"aliases": [
"CVE-2024-57834"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-27T03:15:10Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: vidtv: Fix a null-ptr-deref in vidtv_mux_stop_thread\n\nsyzbot report a null-ptr-deref in vidtv_mux_stop_thread. [1]\n\nIf dvb-\u003emux is not initialized successfully by vidtv_mux_init() in the\nvidtv_start_streaming(), it will trigger null pointer dereference about mux\nin vidtv_mux_stop_thread().\n\nAdjust the timing of streaming initialization and check it before\nstopping it.\n\n[1]\nKASAN: null-ptr-deref in range [0x0000000000000128-0x000000000000012f]\nCPU: 0 UID: 0 PID: 5842 Comm: syz-executor248 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\nRIP: 0010:vidtv_mux_stop_thread+0x26/0x80 drivers/media/test-drivers/vidtv/vidtv_mux.c:471\nCode: 90 90 90 90 66 0f 1f 00 55 53 48 89 fb e8 82 2e c8 f9 48 8d bb 28 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 02 7e 3b 0f b6 ab 28 01 00 00 31 ff 89 ee e8\nRSP: 0018:ffffc90003f2faa8 EFLAGS: 00010202\nRAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87cfb125\nRDX: 0000000000000025 RSI: ffffffff87d120ce RDI: 0000000000000128\nRBP: ffff888029b8d220 R08: 0000000000000005 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000003 R12: ffff888029b8d188\nR13: ffffffff8f590aa0 R14: ffffc9000581c5c8 R15: ffff888029a17710\nFS: 00007f7eef5156c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f7eef5e635c CR3: 0000000076ca6000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n vidtv_stop_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:209 [inline]\n vidtv_stop_feed+0x151/0x250 drivers/media/test-drivers/vidtv/vidtv_bridge.c:252\n dmx_section_feed_stop_filtering+0x90/0x160 drivers/media/dvb-core/dvb_demux.c:1000\n dvb_dmxdev_feed_stop.isra.0+0x1ee/0x270 drivers/media/dvb-core/dmxdev.c:486\n dvb_dmxdev_filter_stop+0x22a/0x3a0 drivers/media/dvb-core/dmxdev.c:559\n dvb_dmxdev_filter_free drivers/media/dvb-core/dmxdev.c:840 [inline]\n dvb_demux_release+0x92/0x550 drivers/media/dvb-core/dmxdev.c:1246\n __fput+0x3f8/0xb60 fs/file_table.c:450\n task_work_run+0x14e/0x250 kernel/task_work.c:239\n get_signal+0x1d3/0x2610 kernel/signal.c:2790\n arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337\n exit_to_user_mode_loop kernel/entry/common.c:111 [inline]\n exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]\n __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]\n syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218\n do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89\n entry_SYSCALL_64_after_hwframe+0x77/0x7f",
"id": "GHSA-xgjf-869w-4cgj",
"modified": "2025-03-13T15:32:49Z",
"published": "2025-02-27T03:34:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57834"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1221989555db711578a327a9367f1be46500cb48"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2c5601b99d79d196fe4a37159e3dfb38e778ea18"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/52d3512f9a7a52ef92864679b1e8e8aa16202c6a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/59a707ad952eb2ea8d59457d662b6f4138f17b08"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/86307e443c5844f38e1b98e2c51a4195c55576cd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/904a8323cc8afa7eb9ce3e67303a2b3f2f787306"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/95432a37778c9c5dd105b7b9f19e9695c9e166cf"
}
],
"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 |
|---|
Nomenclature
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