fkie_cve-2025-21868
Vulnerability from fkie_nvd
Published
2025-03-27 14:15
Modified
2025-03-27 16:45
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: allow small head cache usage with large MAX_SKB_FRAGS values
Sabrina reported the following splat:
WARNING: CPU: 0 PID: 1 at net/core/dev.c:6935 netif_napi_add_weight_locked+0x8f2/0xba0
Modules linked in:
CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.14.0-rc1-net-00092-g011b03359038 #996
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014
RIP: 0010:netif_napi_add_weight_locked+0x8f2/0xba0
Code: e8 c3 e6 6a fe 48 83 c4 28 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc c7 44 24 10 ff ff ff ff e9 8f fb ff ff e8 9e e6 6a fe <0f> 0b e9 d3 fe ff ff e8 92 e6 6a fe 48 8b 04 24 be ff ff ff ff 48
RSP: 0000:ffffc9000001fc60 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88806ce48128 RCX: 1ffff11001664b9e
RDX: ffff888008f00040 RSI: ffffffff8317ca42 RDI: ffff88800b325cb6
RBP: ffff88800b325c40 R08: 0000000000000001 R09: ffffed100167502c
R10: ffff88800b3a8163 R11: 0000000000000000 R12: ffff88800ac1c168
R13: ffff88800ac1c168 R14: ffff88800ac1c168 R15: 0000000000000007
FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888008201000 CR3: 0000000004c94001 CR4: 0000000000370ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
gro_cells_init+0x1ba/0x270
xfrm_input_init+0x4b/0x2a0
xfrm_init+0x38/0x50
ip_rt_init+0x2d7/0x350
ip_init+0xf/0x20
inet_init+0x406/0x590
do_one_initcall+0x9d/0x2e0
do_initcalls+0x23b/0x280
kernel_init_freeable+0x445/0x490
kernel_init+0x20/0x1d0
ret_from_fork+0x46/0x80
ret_from_fork_asm+0x1a/0x30
</TASK>
irq event stamp: 584330
hardirqs last enabled at (584338): [<ffffffff8168bf87>] __up_console_sem+0x77/0xb0
hardirqs last disabled at (584345): [<ffffffff8168bf6c>] __up_console_sem+0x5c/0xb0
softirqs last enabled at (583242): [<ffffffff833ee96d>] netlink_insert+0x14d/0x470
softirqs last disabled at (583754): [<ffffffff8317c8cd>] netif_napi_add_weight_locked+0x77d/0xba0
on kernel built with MAX_SKB_FRAGS=45, where SKB_WITH_OVERHEAD(1024)
is smaller than GRO_MAX_HEAD.
Such built additionally contains the revert of the single page frag cache
so that napi_get_frags() ends up using the page frag allocator, triggering
the splat.
Note that the underlying issue is independent from the mentioned
revert; address it ensuring that the small head cache will fit either TCP
and GRO allocation and updating napi_alloc_skb() and __netdev_alloc_skb()
to select kmalloc() usage for any allocation fitting such cache.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: allow small head cache usage with large MAX_SKB_FRAGS values\n\nSabrina reported the following splat:\n\n WARNING: CPU: 0 PID: 1 at net/core/dev.c:6935 netif_napi_add_weight_locked+0x8f2/0xba0\n Modules linked in:\n CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.14.0-rc1-net-00092-g011b03359038 #996\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014\n RIP: 0010:netif_napi_add_weight_locked+0x8f2/0xba0\n Code: e8 c3 e6 6a fe 48 83 c4 28 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc c7 44 24 10 ff ff ff ff e9 8f fb ff ff e8 9e e6 6a fe \u003c0f\u003e 0b e9 d3 fe ff ff e8 92 e6 6a fe 48 8b 04 24 be ff ff ff ff 48\n RSP: 0000:ffffc9000001fc60 EFLAGS: 00010293\n RAX: 0000000000000000 RBX: ffff88806ce48128 RCX: 1ffff11001664b9e\n RDX: ffff888008f00040 RSI: ffffffff8317ca42 RDI: ffff88800b325cb6\n RBP: ffff88800b325c40 R08: 0000000000000001 R09: ffffed100167502c\n R10: ffff88800b3a8163 R11: 0000000000000000 R12: ffff88800ac1c168\n R13: ffff88800ac1c168 R14: ffff88800ac1c168 R15: 0000000000000007\n FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: ffff888008201000 CR3: 0000000004c94001 CR4: 0000000000370ef0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n \u003cTASK\u003e\n gro_cells_init+0x1ba/0x270\n xfrm_input_init+0x4b/0x2a0\n xfrm_init+0x38/0x50\n ip_rt_init+0x2d7/0x350\n ip_init+0xf/0x20\n inet_init+0x406/0x590\n do_one_initcall+0x9d/0x2e0\n do_initcalls+0x23b/0x280\n kernel_init_freeable+0x445/0x490\n kernel_init+0x20/0x1d0\n ret_from_fork+0x46/0x80\n ret_from_fork_asm+0x1a/0x30\n \u003c/TASK\u003e\n irq event stamp: 584330\n hardirqs last enabled at (584338): [\u003cffffffff8168bf87\u003e] __up_console_sem+0x77/0xb0\n hardirqs last disabled at (584345): [\u003cffffffff8168bf6c\u003e] __up_console_sem+0x5c/0xb0\n softirqs last enabled at (583242): [\u003cffffffff833ee96d\u003e] netlink_insert+0x14d/0x470\n softirqs last disabled at (583754): [\u003cffffffff8317c8cd\u003e] netif_napi_add_weight_locked+0x77d/0xba0\n\non kernel built with MAX_SKB_FRAGS=45, where SKB_WITH_OVERHEAD(1024)\nis smaller than GRO_MAX_HEAD.\n\nSuch built additionally contains the revert of the single page frag cache\nso that napi_get_frags() ends up using the page frag allocator, triggering\nthe splat.\n\nNote that the underlying issue is independent from the mentioned\nrevert; address it ensuring that the small head cache will fit either TCP\nand GRO allocation and updating napi_alloc_skb() and __netdev_alloc_skb()\nto select kmalloc() usage for any allocation fitting such cache."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: permite el uso de cach\u00e9 de cabeza peque\u00f1a con valores MAX_SKB_FRAGS grandes Sabrina inform\u00f3 el siguiente splat: ADVERTENCIA: CPU: 0 PID: 1 en net/core/dev.c:6935 netif_napi_add_weight_locked+0x8f2/0xba0 M\u00f3dulos vinculados: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 No contaminado 6.14.0-rc1-net-00092-g011b03359038 #996 Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014 RIP: 0010:netif_napi_add_weight_locked+0x8f2/0xba0 C\u00f3digo: e8 c3 e6 6a fe 48 83 c4 28 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc c7 44 24 10 ff ff ff ff e9 8f fb ff ff e8 9e e6 6a fe \u0026lt;0f\u0026gt; 0b e9 d3 fe ff ff e8 92 e6 6a fe 48 8b 04 24 be ff ff ff ff 48 RSP: 0000:ffffc9000001fc60 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88806ce48128 RCX: 1ffff11001664b9e RDX: ffff888008f00040 RSI: ffffffff8317ca42 RDI: ffff88800b325cb6 RBP: ffff88800b325c40 R08: 0000000000000001 R09: ffffed100167502c R10: ffff88800b3a8163 R11: 0000000000000000 R12: ffff88800ac1c168 R13: ffff88800ac1c168 R14: ffff88800ac1c168 R15: 0000000000000007 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888008201000 CR3: 0000000004c94001 CR4: 0000000000370ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Rastreo de llamadas: gro_cells_init+0x1ba/0x270 xfrm_input_init+0x4b/0x2a0 xfrm_init+0x38/0x50 ip_rt_init+0x2d7/0x350 ip_init+0xf/0x20 inet_init+0x406/0x590 do_one_initcall+0x9d/0x2e0 do_initcalls+0x23b/0x280 kernel_init_freeable+0x445/0x490 kernel_init+0x20/0x1d0 ret_from_fork+0x46/0x80 ret_from_fork_asm+0x1a/0x30 marca de evento de irq: 584330 hardirqs habilitados por \u00faltima vez en (584338): [] __up_console_sem+0x77/0xb0 hardirqs deshabilitados por \u00faltima vez en (584345): [] __up_console_sem+0x5c/0xb0 softirqs habilitados por \u00faltima vez en (583242): [] netlink_insert+0x14d/0x470 softirqs deshabilitados por \u00faltima vez en (583754): [] netif_napi_add_weight_locked+0x77d/0xba0 en el kernel creado con MAX_SKB_FRAGS=45, donde SKB_WITH_OVERHEAD(1024) es menor que GRO_MAX_HEAD. Esta compilaci\u00f3n tambi\u00e9n incluye la reversi\u00f3n de la cach\u00e9 de fragmentos de p\u00e1gina \u00fanica, de modo que napi_get_frags() termine usando el asignador de fragmentos de p\u00e1gina, lo que activa el splat. Tenga en cuenta que el problema subyacente es independiente de la reversi\u00f3n mencionada; ab\u00f3rdelo asegurando que la cach\u00e9 de encabezado peque\u00f1o se ajuste a la asignaci\u00f3n TCP y GRO, y actualizando napi_alloc_skb() y __netdev_alloc_skb() para seleccionar el uso de kmalloc() para cualquier asignaci\u00f3n que se ajuste a dicha cach\u00e9."
}
],
"id": "CVE-2025-21868",
"lastModified": "2025-03-27T16:45:12.210",
"metrics": {},
"published": "2025-03-27T14:15:47.873",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/14ad6ed30a10afbe91b0749d6378285f4225d482"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/648e440c98e260dec835e48a5d7a9993477b1f9d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/ed0ca7d2127c63991cfaf1932b827e3f4f8ee480"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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