Metrics
Affected Vendors & Products
Tue, 25 Mar 2025 14:00:00 +0000
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First Time appeared |
Linux
Linux linux Kernel |
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CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:* |
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Vendors & Products |
Linux
Linux linux Kernel |
Tue, 04 Mar 2025 03:45:00 +0000
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Metrics |
ssvc
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Thu, 27 Feb 2025 19:45:00 +0000
Type | Values Removed | Values Added |
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Weaknesses | CWE-416 | |
Metrics |
cvssV3_1
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cvssV3_1
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Thu, 27 Feb 2025 01:45:00 +0000
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References |
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Metrics |
threat_severity
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cvssV3_1
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Wed, 26 Feb 2025 02:45:00 +0000
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Description | In the Linux kernel, the following vulnerability has been resolved: tipc: fix use-after-free Read in tipc_named_reinit syzbot found the following issue on: ================================================================== BUG: KASAN: use-after-free in tipc_named_reinit+0x94f/0x9b0 net/tipc/name_distr.c:413 Read of size 8 at addr ffff88805299a000 by task kworker/1:9/23764 CPU: 1 PID: 23764 Comm: kworker/1:9 Not tainted 5.18.0-rc4-syzkaller-00878-g17d49e6e8012 #0 Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events tipc_net_finalize_work Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0xeb/0x495 mm/kasan/report.c:313 print_report mm/kasan/report.c:429 [inline] kasan_report.cold+0xf4/0x1c6 mm/kasan/report.c:491 tipc_named_reinit+0x94f/0x9b0 net/tipc/name_distr.c:413 tipc_net_finalize+0x234/0x3d0 net/tipc/net.c:138 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 </TASK> [...] ================================================================== In the commit d966ddcc3821 ("tipc: fix a deadlock when flushing scheduled work"), the cancel_work_sync() function just to make sure ONLY the work tipc_net_finalize_work() is executing/pending on any CPU completed before tipc namespace is destroyed through tipc_exit_net(). But this function is not guaranteed the work is the last queued. So, the destroyed instance may be accessed in the work which will try to enqueue later. In order to completely fix, we re-order the calling of cancel_work_sync() to make sure the work tipc_net_finalize_work() was last queued and it must be completed by calling cancel_work_sync(). | |
Title | tipc: fix use-after-free Read in tipc_named_reinit | |
References |
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Status: PUBLISHED
Assigner: Linux
Published: 2025-02-26T02:24:18.198Z
Updated: 2025-02-27T18:22:30.889Z
Reserved: 2025-02-26T02:21:30.443Z
Link: CVE-2022-49696

Updated: 2025-02-27T18:15:02.717Z

Status : Analyzed
Published: 2025-02-26T07:01:44.357
Modified: 2025-03-25T13:39:35.560
Link: CVE-2022-49696
