CVE-2024-26958— Linux kernel 安全漏洞
可能的 ATT&CK 技术 1AI
T1068 · Exploitation for Privilege Escalation影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | af7cf057933f01dc7f33ddfb5e436ad598ed17ad< 6cd3f13aaa62970b5169d990e936b2e96943bc6a | affected |
af7cf057933f01dc7f33ddfb5e436ad598ed17ad< 4595d90b5d2ea5fa4d318d13f59055aa4bf3e7f5 | affected | ||
af7cf057933f01dc7f33ddfb5e436ad598ed17ad< 80d24b308b7ee7037fc90d8ac99f6f78df0a256f | affected | ||
af7cf057933f01dc7f33ddfb5e436ad598ed17ad< 3abc2d160ed8213948b147295d77d44a22c88fa3 | affected | ||
af7cf057933f01dc7f33ddfb5e436ad598ed17ad< e25447c35f8745337ea8bc0c9697fcac14df8605 | affected | ||
af7cf057933f01dc7f33ddfb5e436ad598ed17ad< 1daf52b5ffb24870fbeda20b4967526d8f9e12ab | affected | ||
af7cf057933f01dc7f33ddfb5e436ad598ed17ad< cf54f66e1dd78990ec6b32177bca7e6ea2144a95 | affected | ||
af7cf057933f01dc7f33ddfb5e436ad598ed17ad< 17f46b803d4f23c66cacce81db35fef3adb8f2af | affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2024-26958 基础信息
漏洞信息
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Vulnerability Title
nfs: fix UAF in direct writes
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfs: fix UAF in direct writes In production we have been hitting the following warning consistently ------------[ cut here ]------------ refcount_t: underflow; use-after-free. WARNING: CPU: 17 PID: 1800359 at lib/refcount.c:28 refcount_warn_saturate+0x9c/0xe0 Workqueue: nfsiod nfs_direct_write_schedule_work [nfs] RIP: 0010:refcount_warn_saturate+0x9c/0xe0 PKRU: 55555554 Call Trace: <TASK> ? __warn+0x9f/0x130 ? refcount_warn_saturate+0x9c/0xe0 ? report_bug+0xcc/0x150 ? handle_bug+0x3d/0x70 ? exc_invalid_op+0x16/0x40 ? asm_exc_invalid_op+0x16/0x20 ? refcount_warn_saturate+0x9c/0xe0 nfs_direct_write_schedule_work+0x237/0x250 [nfs] process_one_work+0x12f/0x4a0 worker_thread+0x14e/0x3b0 ? ZSTD_getCParams_internal+0x220/0x220 kthread+0xdc/0x120 ? __btf_name_valid+0xa0/0xa0 ret_from_fork+0x1f/0x30 This is because we're completing the nfs_direct_request twice in a row. The source of this is when we have our commit requests to submit, we process them and send them off, and then in the completion path for the commit requests we have if (nfs_commit_end(cinfo.mds)) nfs_direct_write_complete(dreq); However since we're submitting asynchronous requests we sometimes have one that completes before we submit the next one, so we end up calling complete on the nfs_direct_request twice. The only other place we use nfs_generic_commit_list() is in __nfs_commit_inode, which wraps this call in a nfs_commit_begin(); nfs_commit_end(); Which is a common pattern for this style of completion handling, one that is also repeated in the direct code with get_dreq()/put_dreq() calls around where we process events as well as in the completion paths. Fix this by using the same pattern for the commit requests. Before with my 200 node rocksdb stress running this warning would pop every 10ish minutes. With my patch the stress test has been running for several hours without popping.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于内存释放后重用。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2024-26958 的公开POC
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CVE-2024-26958 邮件列表归档 (1)
CVE-2024-26958 其他参考 (7)
同批安全公告 · Linux · 2024-05-01 · 共 159 条
| CVE-2024-27388 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-26953 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-26931 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27053 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26990 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26952 | 8.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27018 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26936 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26980 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26954 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26994 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26966 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26974 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26976 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27062 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27061 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26983 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27058 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27056 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-27017 | 7.8 HIGH | Linux kernel 安全漏洞 |
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IV. Related Vulnerabilities
V. Comments for CVE-2024-26958
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