ghsa-c6pp-jfqw-h5c6
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
net: mana: Fix Rx DMA datasize and skb_over_panic
mana_get_rxbuf_cfg() aligns the RX buffer's DMA datasize to be multiple of 64. So a packet slightly bigger than mtu+14, say 1536, can be received and cause skb_over_panic.
Sample dmesg:
[ 5325.237162] skbuff: skb_over_panic: text:ffffffffc043277a len:1536 put:1536 head:ff1100018b517000 data:ff1100018b517100 tail:0x700 end:0x6ea dev:
As discussed internally, this alignment is not necessary. To fix this bug, remove it from the code. So oversized packets will be marked as CQE_RX_TRUNCATED by NIC, and dropped.
{
"affected": [],
"aliases": [
"CVE-2024-35901"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-19T09:15:10Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: Fix Rx DMA datasize and skb_over_panic\n\nmana_get_rxbuf_cfg() aligns the RX buffer\u0027s DMA datasize to be\nmultiple of 64. So a packet slightly bigger than mtu+14, say 1536,\ncan be received and cause skb_over_panic.\n\nSample dmesg:\n[ 5325.237162] skbuff: skb_over_panic: text:ffffffffc043277a len:1536 put:1536 head:ff1100018b517000 data:ff1100018b517100 tail:0x700 end:0x6ea dev:\u003cNULL\u003e\n[ 5325.243689] ------------[ cut here ]------------\n[ 5325.245748] kernel BUG at net/core/skbuff.c:192!\n[ 5325.247838] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\n[ 5325.258374] RIP: 0010:skb_panic+0x4f/0x60\n[ 5325.302941] Call Trace:\n[ 5325.304389] \u003cIRQ\u003e\n[ 5325.315794] ? skb_panic+0x4f/0x60\n[ 5325.317457] ? asm_exc_invalid_op+0x1f/0x30\n[ 5325.319490] ? skb_panic+0x4f/0x60\n[ 5325.321161] skb_put+0x4e/0x50\n[ 5325.322670] mana_poll+0x6fa/0xb50 [mana]\n[ 5325.324578] __napi_poll+0x33/0x1e0\n[ 5325.326328] net_rx_action+0x12e/0x280\n\nAs discussed internally, this alignment is not necessary. To fix\nthis bug, remove it from the code. So oversized packets will be\nmarked as CQE_RX_TRUNCATED by NIC, and dropped.",
"id": "GHSA-c6pp-jfqw-h5c6",
"modified": "2024-05-19T09:34:47Z",
"published": "2024-05-19T09:34:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-35901"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/05cb7c41fa1a7a7b2c2a6b81bbe7c67f5c11932b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c0de6ab920aafb56feab56058e46b688e694a246"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ca58927b00385005f488b6a9905ced7a4f719aad"
}
],
"schema_version": "1.4.0",
"severity": []
}
- 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.