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| author |   Jun Yang <juny24602@gmail.com> | 2025-03-05 23:44:10 +0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2025-03-06 16:35:14 -0800 |
| commit | 115ef44a98220fddfab37a39a19370497cd718b9 (patch) | |
| tree | 55fcb7eca14935389f64eb9ef0e8d7143536fd5d /include/uapi/linux/byteorder/ssh:/git@git.zx2c4.com | |
| parent | Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue (diff) | |
sched: address a potential NULL pointer dereference in the GRED scheduler.
If kzalloc in gred_init returns a NULL pointer, the code follows the
error handling path, invoking gred_destroy. This, in turn, calls
gred_offload, where memset could receive a NULL pointer as input,
potentially leading to a kernel crash.
When table->opt is NULL in gred_init(), gred_change_table_def()
is not called yet, so it is not necessary to call ->ndo_setup_tc()
in gred_offload().
Signed-off-by: Jun Yang <juny24602@gmail.com>
Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com>
Fixes: f25c0515c521 ("net: sched: gred: dynamically allocate tc_gred_qopt_offload")
Link: https://patch.msgid.link/20250305154410.3505642-1-juny24602@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/uapi/linux/byteorder/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions