CVE-2023-53701 in Linux信息

摘要

由 VulDB • 2026-08-22

在 Linux 内核中,已修复以下漏洞:

netfilter: nf_tables:从准备阶段停用匿名集合

[针对 c1592a89942e9678f7d9c8030efa777c0d57edab 的 4.14 版本 backport]

在下一个世代中将已删除的匿名集合作为非活动状态,以防止用户对其执行任何更新操作。如果事务被中止,则清除生成位掩码(generation bitmask)。

以下 KASAN splat 显示了对已在同一事务中移除的绑定匿名集合的元素进行删除的操作:

[ 64.921510] ==================================================================
[ 64.923123] BUG: KASAN: wild-memory-access in nf_tables_commit+0xa24/0x1490 [nf_tables]
[ 64.924745] Write of size 8 at addr dead000000000122 by task test/890
[ 64.927903] CPU: 3 PID: 890 Comm: test Not tainted 6.3.0+ #253
[ 64.931120] Call Trace:
[ 64.932699]
[ 64.934292] dump_stack_lvl+0x33/0x50
[ 64.935908] ? nf_tables_commit+0xa24/0x1490 [nf_tables]
[ 64.937551] kasan_report+0xda/0x120
[ 64.939186] ? nf_tables_commit+0xa24/0x1490 [nf_tables]
[ 64.940814] nf_tables_commit+0xa24/0x1490 [nf_tables]
[ 64.942452] ? __kasan_slab_alloc+0x2d/0x60
[ 64.944070] ? nf_tables_setelem_notify+0x190/0x190 [nf_tables]
[ 64.945710] ? kasan_set_track+0x21/0x30
[ 64.947323] nfnetlink_rcv_batch+0x709/0xd90 [nfnetlink]
[ 64.948898] ? nfnetlink_rcv_msg+0x480/0x480 [nfnetlink]

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来源

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