ghsa-m6wx-5x43-45rq
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts
This patch is against CVE-2023-6270. The description of cve is:
A flaw was found in the ATA over Ethernet (AoE) driver in the Linux
kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on
struct net_device
, and a use-after-free can be triggered by racing
between the free on the struct and the access through the skbtxq
global queue. This could lead to a denial of service condition or
potential code execution.
In aoecmd_cfg_pkts(), it always calls dev_put(ifp) when skb initial code is finished. But the net_device ifp will still be used in later tx()->dev_queue_xmit() in kthread. Which means that the dev_put(ifp) should NOT be called in the success path of skb initial code in aoecmd_cfg_pkts(). Otherwise tx() may run into use-after-free because the net_device is freed.
This patch removed the dev_put(ifp) in the success path in aoecmd_cfg_pkts(), and added dev_put() after skb xmit in tx().
{ "affected": [], "aliases": [ "CVE-2024-26898" ], "database_specific": { "cwe_ids": [ "CWE-416" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2024-04-17T11:15:10Z", "severity": "HIGH" }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\naoe: fix the potential use-after-free problem in aoecmd_cfg_pkts\n\nThis patch is against CVE-2023-6270. The description of cve is:\n\n A flaw was found in the ATA over Ethernet (AoE) driver in the Linux\n kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on\n `struct net_device`, and a use-after-free can be triggered by racing\n between the free on the struct and the access through the `skbtxq`\n global queue. This could lead to a denial of service condition or\n potential code execution.\n\nIn aoecmd_cfg_pkts(), it always calls dev_put(ifp) when skb initial\ncode is finished. But the net_device ifp will still be used in\nlater tx()-\u003edev_queue_xmit() in kthread. Which means that the\ndev_put(ifp) should NOT be called in the success path of skb\ninitial code in aoecmd_cfg_pkts(). Otherwise tx() may run into\nuse-after-free because the net_device is freed.\n\nThis patch removed the dev_put(ifp) in the success path in\naoecmd_cfg_pkts(), and added dev_put() after skb xmit in tx().", "id": "GHSA-m6wx-5x43-45rq", "modified": "2024-06-27T12:30:45Z", "published": "2024-04-17T12:32:05Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26898" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/079cba4f4e307c69878226fdf5228c20aa1c969c" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/1a54aa506b3b2f31496731039e49778f54eee881" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/74ca3ef68d2f449bc848c0a814cefc487bf755fa" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/a16fbb80064634b254520a46395e36b87ca4731e" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/ad80c34944d7175fa1f5c7a55066020002921a99" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/eb48680b0255a9e8a9bdc93d6a55b11c31262e62" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/f98364e926626c678fb4b9004b75cacf92ff0662" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/faf0b4c5e00bb680e8e43ac936df24d3f48c8e65" }, { "type": "WEB", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html" }, { "type": "WEB", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "type": "CVSS_V3" } ] }
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