Описание
In the Linux kernel, the following vulnerability has been resolved:
virtio: delete vq in vp_find_vqs_msix() when request_irq() fails
When request_irq() fails, error path calls vp_del_vqs(). There, as vq is present in the list, free_irq() is called for the same vector. That causes following splat:
[ 0.414355] Trying to free already-free IRQ 27 [ 0.414403] WARNING: CPU: 1 PID: 1 at kernel/irq/manage.c:1899 free_irq+0x1a1/0x2d0 [ 0.414510] Modules linked in: [ 0.414540] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc4+ #27 [ 0.414540] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014 [ 0.414540] RIP: 0010:free_irq+0x1a1/0x2d0 [ 0.414540] Code: 1e 00 48 83 c4 08 48 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 90 8b 74 24 04 48 c7 c7 98 80 6c b1 e8 00 c9 f7 ff 90 <0f> 0b 90 90 48 89 ee 4c 89 ef e8 e0 20 b8 00 49 8b 47 40 48 8b 40 [ 0.414540] RSP: 0000:ffffb71480013ae0 EFLAGS: 00010086 [ 0.414540] RAX: 0000000000000...
In the Linux kernel, the following vulnerability has been resolved:
virtio: delete vq in vp_find_vqs_msix() when request_irq() fails
When request_irq() fails, error path calls vp_del_vqs(). There, as vq is present in the list, free_irq() is called for the same vector. That causes following splat:
[ 0.414355] Trying to free already-free IRQ 27 [ 0.414403] WARNING: CPU: 1 PID: 1 at kernel/irq/manage.c:1899 free_irq+0x1a1/0x2d0 [ 0.414510] Modules linked in: [ 0.414540] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc4+ #27 [ 0.414540] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014 [ 0.414540] RIP: 0010:free_irq+0x1a1/0x2d0 [ 0.414540] Code: 1e 00 48 83 c4 08 48 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 90 8b 74 24 04 48 c7 c7 98 80 6c b1 e8 00 c9 f7 ff 90 <0f> 0b 90 90 48 89 ee 4c 89 ef e8 e0 20 b8 00 49 8b 47 40 48 8b 40 [ 0.414540] RSP: 0000:ffffb71480013ae0 EFLAGS: 00010086 [ 0.414540] RAX: 0000000000000000 RBX: ffffa099c2722000 RCX: 0000000000000000 [ 0.414540] RDX: 0000000000000000 RSI: ffffb71480013998 RDI: 0000000000000001 [ 0.414540] RBP: 0000000000000246 R08: 00000000ffffdfff R09: 0000000000000001 [ 0.414540] R10: 00000000ffffdfff R11: ffffffffb18729c0 R12: ffffa099c1c91760 [ 0.414540] R13: ffffa099c1c916a4 R14: ffffa099c1d2f200 R15: ffffa099c1c91600 [ 0.414540] FS: 0000000000000000(0000) GS:ffffa099fec40000(0000) knlGS:0000000000000000 [ 0.414540] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.414540] CR2: 0000000000000000 CR3: 0000000008e3e001 CR4: 0000000000370ef0 [ 0.414540] Call Trace: [ 0.414540] [ 0.414540] ? __warn+0x80/0x120 [ 0.414540] ? free_irq+0x1a1/0x2d0 [ 0.414540] ? report_bug+0x164/0x190 [ 0.414540] ? handle_bug+0x3b/0x70 [ 0.414540] ? exc_invalid_op+0x17/0x70 [ 0.414540] ? asm_exc_invalid_op+0x1a/0x20 [ 0.414540] ? free_irq+0x1a1/0x2d0 [ 0.414540] vp_del_vqs+0xc1/0x220 [ 0.414540] vp_find_vqs_msix+0x305/0x470 [ 0.414540] vp_find_vqs+0x3e/0x1a0 [ 0.414540] vp_modern_find_vqs+0x1b/0x70 [ 0.414540] init_vqs+0x387/0x600 [ 0.414540] virtnet_probe+0x50a/0xc80 [ 0.414540] virtio_dev_probe+0x1e0/0x2b0 [ 0.414540] really_probe+0xc0/0x2c0 [ 0.414540] ? __pfx___driver_attach+0x10/0x10 [ 0.414540] __driver_probe_device+0x73/0x120 [ 0.414540] driver_probe_device+0x1f/0xe0 [ 0.414540] __driver_attach+0x88/0x180 [ 0.414540] bus_for_each_dev+0x85/0xd0 [ 0.414540] bus_add_driver+0xec/0x1f0 [ 0.414540] driver_register+0x59/0x100 [ 0.414540] ? __pfx_virtio_net_driver_init+0x10/0x10 [ 0.414540] virtio_net_driver_init+0x90/0xb0 [ 0.414540] do_one_initcall+0x58/0x230 [ 0.414540] kernel_init_freeable+0x1a3/0x2d0 [ 0.414540] ? __pfx_kernel_init+0x10/0x10 [ 0.414540] kernel_init+0x1a/0x1c0 [ 0.414540] ret_from_fork+0x31/0x50 [ 0.414540] ? __pfx_kernel_init+0x10/0x10 [ 0.414540] ret_from_fork_asm+0x1a/0x30 [ 0.414540]
Fix this by calling deleting the current vq when request_irq() fails.
Ссылки
- https://nvd.nist.gov/vuln/detail/CVE-2024-37353
- https://git.kernel.org/stable/c/04207a9c64e0b16dac842e5b2ecfa53af25bdea7
- https://git.kernel.org/stable/c/42d30da50d5c1ec433fd9551bfddd6887407c352
- https://git.kernel.org/stable/c/43a9aaf63254ab821f0f25fea25698ebe69ea16a
- https://git.kernel.org/stable/c/7fbe54f02a5c77ff5dd65e8ed0b58e3bd8c43e9c
- https://git.kernel.org/stable/c/89875151fccdd024d571aa884ea97a0128b968b6
- https://git.kernel.org/stable/c/abf001651acd1858252764fa39d79e3d0b5c86b2
- https://git.kernel.org/stable/c/bb61a84793858330ba2ca1d202d3779096f6fb54
- https://git.kernel.org/stable/c/cb7a7c8144b434e06aba99b13b045a7efe859587
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
CVE ID
Связанные уязвимости
[REJECTED CVE] A resource management issue exists in the Linux Kernel's virtio module. When request_irq() fails in vp_find_vqs_msix(), the cleanup path incorrectly attempts to free an already released IRQ, resulting in warnings and potential system instability. This issue arises from the mishandling of virtual queue deletion during error handling.
Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
ELSA-2024-12611: Unbreakable Enterprise kernel security update (IMPORTANT)
