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English(EN) FreeBSD: kernel use-after-free via tty ioctls – CVE-2026-58093 https://www. cve.org/CVERecord?id=CVE-2026- 58093 "The TIOCSCTTY ioctl handler drops the tty lock

FreeBSD 内核漏洞 CVE-2026-58093 允许权限提升

作者 PulseAugur 编辑部 · [1 个来源] ·

在 FreeBSD 内核的 tty ioctl 处理程序中发现了一个关键的使用后释放漏洞，标识为 CVE-2026-58093。该漏洞源于一个竞态条件，其中 TIOCSCTTY ioctl 处理程序在重新获取 tty 锁后未能重新验证终端的状态。此缺陷可能允许未经授权的本地用户通过利用该条件将并发销毁的终端链接到调用进程的会话来提升权限。 AI

排序理由 在操作系统内核中发现特定的 CVE 漏洞。[lever_c_demoted from research: ic=1 ai=0.4]

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FreeBSD 内核漏洞 CVE-2026-58093 允许权限提升

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在操作系统内核中发现特定的 CVE 漏洞。[lever_c_demoted from research: ic=1 ai=0.4]
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报道来源 [1]

  1. Mastodon — fosstodon.org TIER_1 English(EN) · [email protected] ·

    FreeBSD：通过 tty ioctls 的内核 use-after-free – CVE-2026-58093 https://www.cve.org/CVERecord?id=CVE-2026-58093 "TIOCSCTTY ioctl 处理程序会释放 tty 锁

    FreeBSD: kernel use-after-free via tty ioctls – CVE-2026-58093 https://www. cve.org/CVERecord?id=CVE-2026- 58093 "The TIOCSCTTY ioctl handler drops the tty lock in order to acquire the process tree lock. After reacquiring the tty lock, the handler did not revalidate the state of …

    链接 cve.org/CVERecord ctftime.org/…/224122 gmo-cybersecurity.com nvd.nist.gov/…/CVE-2026-58093 reviews.freebsd.org/D59126 github.com/…/b207f754c7709212381eda8c91db… cve.org/CVERecord github.com/…/freebsd-src

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