ghsa-qg9h-x99x-fcvh
Vulnerability from github
Published
2024-04-02 09:30
Modified
2024-06-26 00:31
Details
In the Linux kernel, the following vulnerability has been resolved:
tunnels: fix out of bounds access when building IPv6 PMTU error
If the ICMPv6 error is built from a non-linear skb we get the following splat,
BUG: KASAN: slab-out-of-bounds in do_csum+0x220/0x240 Read of size 4 at addr ffff88811d402c80 by task netperf/820 CPU: 0 PID: 820 Comm: netperf Not tainted 6.8.0-rc1+ #543 ... kasan_report+0xd8/0x110 do_csum+0x220/0x240 csum_partial+0xc/0x20 skb_tunnel_check_pmtu+0xeb9/0x3280 vxlan_xmit_one+0x14c2/0x4080 vxlan_xmit+0xf61/0x5c00 dev_hard_start_xmit+0xfb/0x510 __dev_queue_xmit+0x7cd/0x32a0 br_dev_queue_push_xmit+0x39d/0x6a0
Use skb_checksum instead of csum_partial who cannot deal with non-linear SKBs.
{
"affected": [],
"aliases": [
"CVE-2024-26665"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-02T07:15:43Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntunnels: fix out of bounds access when building IPv6 PMTU error\n\nIf the ICMPv6 error is built from a non-linear skb we get the following\nsplat,\n\n BUG: KASAN: slab-out-of-bounds in do_csum+0x220/0x240\n Read of size 4 at addr ffff88811d402c80 by task netperf/820\n CPU: 0 PID: 820 Comm: netperf Not tainted 6.8.0-rc1+ #543\n ...\n kasan_report+0xd8/0x110\n do_csum+0x220/0x240\n csum_partial+0xc/0x20\n skb_tunnel_check_pmtu+0xeb9/0x3280\n vxlan_xmit_one+0x14c2/0x4080\n vxlan_xmit+0xf61/0x5c00\n dev_hard_start_xmit+0xfb/0x510\n __dev_queue_xmit+0x7cd/0x32a0\n br_dev_queue_push_xmit+0x39d/0x6a0\n\nUse skb_checksum instead of csum_partial who cannot deal with non-linear\nSKBs.",
"id": "GHSA-qg9h-x99x-fcvh",
"modified": "2024-06-26T00:31:35Z",
"published": "2024-04-02T09:30:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26665"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/510c869ffa4068c5f19ff4df51d1e2f3a30aaac1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7dc9feb8b1705cf00de20563b6bc4831f4c99dab"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d75abeec401f8c86b470e7028a13fcdc87e5dd06"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d964dd1bc1452594b4207d9229c157d9386e5d8a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e37cde7a5716466ff2a76f7f27f0a29b05b9a732"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
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