mirror of
https://github.com/fkie-cad/nvd-json-data-feeds.git
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33 lines
4.1 KiB
JSON
33 lines
4.1 KiB
JSON
{
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"id": "CVE-2022-49456",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2025-02-26T07:01:21.950",
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"lastModified": "2025-02-26T07:01:21.950",
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"vulnStatus": "Received",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: fix missed rcu protection\n\nWhen removing the rcu_read_lock in bond_ethtool_get_ts_info() as\ndiscussed [1], I didn't notice it could be called via setsockopt,\nwhich doesn't hold rcu lock, as syzbot pointed:\n\n stack backtrace:\n CPU: 0 PID: 3599 Comm: syz-executor317 Not tainted 5.18.0-rc5-syzkaller-01392-g01f4685797a5 #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n Call Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n bond_option_active_slave_get_rcu include/net/bonding.h:353 [inline]\n bond_ethtool_get_ts_info+0x32c/0x3a0 drivers/net/bonding/bond_main.c:5595\n __ethtool_get_ts_info+0x173/0x240 net/ethtool/common.c:554\n ethtool_get_phc_vclocks+0x99/0x110 net/ethtool/common.c:568\n sock_timestamping_bind_phc net/core/sock.c:869 [inline]\n sock_set_timestamping+0x3a3/0x7e0 net/core/sock.c:916\n sock_setsockopt+0x543/0x2ec0 net/core/sock.c:1221\n __sys_setsockopt+0x55e/0x6a0 net/socket.c:2223\n __do_sys_setsockopt net/socket.c:2238 [inline]\n __se_sys_setsockopt net/socket.c:2235 [inline]\n __x64_sys_setsockopt+0xba/0x150 net/socket.c:2235\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n RIP: 0033:0x7f8902c8eb39\n\nFix it by adding rcu_read_lock and take a ref on the real_dev.\nSince dev_hold() and dev_put() can take NULL these days, we can\nskip checking if real_dev exist.\n\n[1] https://lore.kernel.org/netdev/27565.1642742439@famine/"
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},
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{
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"lang": "es",
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bonding: se corrige la protecci\u00f3n rcu faltante Al eliminar rcu_read_lock en bond_ethtool_get_ts_info() como se discuti\u00f3 [1], no not\u00e9 que se pod\u00eda llamar a trav\u00e9s de setsockopt, que no mantiene el bloqueo rcu, como se\u00f1al\u00f3 syzbot: seguimiento de pila: CPU: 0 PID: 3599 Comm: syz-executor317 Not tainted 5.18.0-rc5-syzkaller-01392-g01f4685797a5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 bond_option_active_slave_get_rcu include/net/bonding.h:353 [inline] bond_ethtool_get_ts_info+0x32c/0x3a0 drivers/net/bonding/bond_main.c:5595 __ethtool_get_ts_info+0x173/0x240 net/ethtool/common.c:554 ethtool_get_phc_vclocks+0x99/0x110 net/ethtool/common.c:568 sock_timestamping_bind_phc net/core/sock.c:869 [inline] sock_set_timestamping+0x3a3/0x7e0 net/core/sock.c:916 sock_setsockopt+0x543/0x2ec0 net/core/sock.c:1221 __sys_setsockopt+0x55e/0x6a0 net/socket.c:2223 __do_sys_setsockopt net/socket.c:2238 [inline] __se_sys_setsockopt net/socket.c:2235 [inline] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2235 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f8902c8eb39 Fix it by adding rcu_read_lock and take a ref on the real_dev. Since dev_hold() and dev_put() can take NULL these days, we can skip checking if real_dev exist. [1] https://lore.kernel.org/netdev/27565.1642742439@famine/ "
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}
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],
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"metrics": {},
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/1b66a533c47d29b38af8e05fbb53b609a5ba3a4e",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/85eed460681da71b359ed906bce4d800081db854",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/9b80ccda233fa6c59de411bf889cc4d0e028f2c7",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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}
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]
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} |