ghsa-mqxf-7jx4-2h8p
Vulnerability from github
Published
2024-06-19 15:30
Modified
2024-06-19 15:30
Details
In the Linux kernel, the following vulnerability has been resolved:
RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt
In rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the resp_pkts queue and then a decision is made whether to run the completer task inline or schedule it. Finally the skb is dereferenced to bump a 'hw' performance counter. This is wrong because if the completer task is already running in a separate thread it may have already processed the skb and freed it which can cause a seg fault. This has been observed infrequently in testing at high scale.
This patch fixes this by changing the order of enqueuing the packet until after the counter is accessed.
{
"affected": [],
"aliases": [
"CVE-2024-38544"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-19T14:15:14Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix seg fault in rxe_comp_queue_pkt\n\nIn rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the\nresp_pkts queue and then a decision is made whether to run the completer\ntask inline or schedule it. Finally the skb is dereferenced to bump a \u0027hw\u0027\nperformance counter. This is wrong because if the completer task is\nalready running in a separate thread it may have already processed the skb\nand freed it which can cause a seg fault. This has been observed\ninfrequently in testing at high scale.\n\nThis patch fixes this by changing the order of enqueuing the packet until\nafter the counter is accessed.",
"id": "GHSA-mqxf-7jx4-2h8p",
"modified": "2024-06-19T15:30:52Z",
"published": "2024-06-19T15:30:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38544"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/21b4c6d4d89030fd4657a8e7c8110fd941049794"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2b23b6097303ed0ba5f4bc036a1c07b6027af5c6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/30df4bef8b8e183333e9b6e9d4509d552c7da6eb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bbad88f111a1829f366c189aa48e7e58e57553fc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19"
}
],
"schema_version": "1.4.0",
"severity": []
}
Loading...