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| author | Haixia Qu <[email protected]> | 2025-06-17 05:56:24 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2025-06-18 21:19:50 +0000 |
| commit | f82727adcf2992822e12198792af450a76ebd5ef (patch) | |
| tree | fe08c8756aae18bc1f0820f15e595f95c43458fc /tools/net/ynl/pyynl/lib/ynl.py | |
| parent | Octeontx2-pf: Fix Backpresure configuration (diff) | |
| download | kernel-f82727adcf2992822e12198792af450a76ebd5ef.tar.gz kernel-f82727adcf2992822e12198792af450a76ebd5ef.zip | |
tipc: fix null-ptr-deref when acquiring remote ip of ethernet bearer
The reproduction steps:
1. create a tun interface
2. enable l2 bearer
3. TIPC_NL_UDP_GET_REMOTEIP with media name set to tun
tipc: Started in network mode
tipc: Node identity 8af312d38a21, cluster identity 4711
tipc: Enabled bearer <eth:syz_tun>, priority 1
Oops: general protection fault
KASAN: null-ptr-deref in range
CPU: 1 UID: 1000 PID: 559 Comm: poc Not tainted 6.16.0-rc1+ #117 PREEMPT
Hardware name: QEMU Ubuntu 24.04 PC
RIP: 0010:tipc_udp_nl_dump_remoteip+0x4a4/0x8f0
the ub was in fact a struct dev.
when bid != 0 && skip_cnt != 0, bearer_list[bid] may be NULL or
other media when other thread changes it.
fix this by checking media_id.
Fixes: 832629ca5c313 ("tipc: add UDP remoteip dump to netlink API")
Signed-off-by: Haixia Qu <[email protected]>
Reviewed-by: Tung Nguyen <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'tools/net/ynl/pyynl/lib/ynl.py')
0 files changed, 0 insertions, 0 deletions