ghsa-h7cj-mmqx-xq6g
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
net: flow_dissector: use DEBUG_NET_WARN_ON_ONCE
The following splat is easy to reproduce upstream as well as in -stable kernels. Florian Westphal provided the following commit:
d1dab4f71d37 ("net: add and use __skb_get_hash_symmetric_net")
but this complementary fix has been also suggested by Willem de Bruijn and it can be easily backported to -stable kernel which consists in using DEBUG_NET_WARN_ON_ONCE instead to silence the following splat given __skb_get_hash() is used by the nftables tracing infrastructure to to identify packets in traces.
[69133.561393] ------------[ cut here ]------------
[69133.561404] WARNING: CPU: 0 PID: 43576 at net/core/flow_dissector.c:1104 __skb_flow_dissect+0x134f/
[...]
[69133.561944] CPU: 0 PID: 43576 Comm: socat Not tainted 6.10.0-rc7+ #379
[69133.561959] RIP: 0010:__skb_flow_dissect+0x134f/0x2ad0
[69133.561970] Code: 83 f9 04 0f 84 b3 00 00 00 45 85 c9 0f 84 aa 00 00 00 41 83 f9 02 0f 84 81 fc ff
ff 44 0f b7 b4 24 80 00 00 00 e9 8b f9 ff ff <0f> 0b e9 20 f3 ff ff 41 f6 c6 20 0f 84 e4 ef ff ff 48 8d 7b 12 e8
[69133.561979] RSP: 0018:ffffc90000006fc0 EFLAGS: 00010246
[69133.561988] RAX: 0000000000000000 RBX: ffffffff82f33e20 RCX: ffffffff81ab7e19
[69133.561994] RDX: dffffc0000000000 RSI: ffffc90000007388 RDI: ffff888103a1b418
[69133.562001] RBP: ffffc90000007310 R08: 0000000000000000 R09: 0000000000000000
[69133.562007] R10: ffffc90000007388 R11: ffffffff810cface R12: ffff888103a1b400
[69133.562013] R13: 0000000000000000 R14: ffffffff82f33e2a R15: ffffffff82f33e28
[69133.562020] FS: 00007f40f7131740(0000) GS:ffff888390800000(0000) knlGS:0000000000000000
[69133.562027] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[69133.562033] CR2: 00007f40f7346ee0 CR3: 000000015d200001 CR4: 00000000001706f0
[69133.562040] Call Trace:
[69133.562044]
{
"affected": [],
"aliases": [
"CVE-2024-42321"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-17T09:15:11Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: flow_dissector: use DEBUG_NET_WARN_ON_ONCE\n\nThe following splat is easy to reproduce upstream as well as in -stable\nkernels. Florian Westphal provided the following commit:\n\n d1dab4f71d37 (\"net: add and use __skb_get_hash_symmetric_net\")\n\nbut this complementary fix has been also suggested by Willem de Bruijn\nand it can be easily backported to -stable kernel which consists in\nusing DEBUG_NET_WARN_ON_ONCE instead to silence the following splat\ngiven __skb_get_hash() is used by the nftables tracing infrastructure to\nto identify packets in traces.\n\n[69133.561393] ------------[ cut here ]------------\n[69133.561404] WARNING: CPU: 0 PID: 43576 at net/core/flow_dissector.c:1104 __skb_flow_dissect+0x134f/\n[...]\n[69133.561944] CPU: 0 PID: 43576 Comm: socat Not tainted 6.10.0-rc7+ #379\n[69133.561959] RIP: 0010:__skb_flow_dissect+0x134f/0x2ad0\n[69133.561970] Code: 83 f9 04 0f 84 b3 00 00 00 45 85 c9 0f 84 aa 00 00 00 41 83 f9 02 0f 84 81 fc ff\nff 44 0f b7 b4 24 80 00 00 00 e9 8b f9 ff ff \u003c0f\u003e 0b e9 20 f3 ff ff 41 f6 c6 20 0f 84 e4 ef ff ff 48 8d 7b 12 e8\n[69133.561979] RSP: 0018:ffffc90000006fc0 EFLAGS: 00010246\n[69133.561988] RAX: 0000000000000000 RBX: ffffffff82f33e20 RCX: ffffffff81ab7e19\n[69133.561994] RDX: dffffc0000000000 RSI: ffffc90000007388 RDI: ffff888103a1b418\n[69133.562001] RBP: ffffc90000007310 R08: 0000000000000000 R09: 0000000000000000\n[69133.562007] R10: ffffc90000007388 R11: ffffffff810cface R12: ffff888103a1b400\n[69133.562013] R13: 0000000000000000 R14: ffffffff82f33e2a R15: ffffffff82f33e28\n[69133.562020] FS: 00007f40f7131740(0000) GS:ffff888390800000(0000) knlGS:0000000000000000\n[69133.562027] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[69133.562033] CR2: 00007f40f7346ee0 CR3: 000000015d200001 CR4: 00000000001706f0\n[69133.562040] Call Trace:\n[69133.562044] \u003cIRQ\u003e\n[69133.562049] ? __warn+0x9f/0x1a0\n[ 1211.841384] ? __skb_flow_dissect+0x107e/0x2860\n[...]\n[ 1211.841496] ? bpf_flow_dissect+0x160/0x160\n[ 1211.841753] __skb_get_hash+0x97/0x280\n[ 1211.841765] ? __skb_get_hash_symmetric+0x230/0x230\n[ 1211.841776] ? mod_find+0xbf/0xe0\n[ 1211.841786] ? get_stack_info_noinstr+0x12/0xe0\n[ 1211.841798] ? bpf_ksym_find+0x56/0xe0\n[ 1211.841807] ? __rcu_read_unlock+0x2a/0x70\n[ 1211.841819] nft_trace_init+0x1b9/0x1c0 [nf_tables]\n[ 1211.841895] ? nft_trace_notify+0x830/0x830 [nf_tables]\n[ 1211.841964] ? get_stack_info+0x2b/0x80\n[ 1211.841975] ? nft_do_chain_arp+0x80/0x80 [nf_tables]\n[ 1211.842044] nft_do_chain+0x79c/0x850 [nf_tables]",
"id": "GHSA-h7cj-mmqx-xq6g",
"modified": "2024-08-17T09:30:25Z",
"published": "2024-08-17T09:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42321"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/120f1c857a73e52132e473dee89b340440cb692b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4afbac11f2f629d1e62817c4e210bdfaa7521107"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c5d21aabf1b31a79f228508af33aee83456bc1b0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/eb03d9826aa646577342a952d658d4598381c035"
}
],
"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.