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| author | Zhipeng Lu <alexious@zju.edu.cn> | 2024-02-01 15:41:05 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-23 10:42:19 +0300 |
| commit | edfd328fe7bd6c0d4370cd009f3fec2285260784 (patch) | |
| tree | 3a46b3eead446461f10f66b9e04511eb4275d88c /drivers/atm | |
| parent | e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d (diff) | |
| download | linux-edfd328fe7bd6c0d4370cd009f3fec2285260784.tar.xz | |
atm: idt77252: fix a memleak in open_card_ubr0
[ Upstream commit f3616173bf9be9bf39d131b120d6eea4e6324cb5 ]
When alloc_scq fails, card->vcs[0] (i.e. vc) should be freed. Otherwise,
in the following call chain:
idt77252_init_one
|-> idt77252_dev_open
|-> open_card_ubr0
|-> alloc_scq [failed]
|-> deinit_card
|-> vfree(card->vcs);
card->vcs is freed and card->vcs[0] is leaked.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Zhipeng Lu <alexious@zju.edu.cn>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/atm')
| -rw-r--r-- | drivers/atm/idt77252.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c index a217b50439e7..e616e33c8a20 100644 --- a/drivers/atm/idt77252.c +++ b/drivers/atm/idt77252.c @@ -2936,6 +2936,8 @@ open_card_ubr0(struct idt77252_dev *card) vc->scq = alloc_scq(card, vc->class); if (!vc->scq) { printk("%s: can't get SCQ.\n", card->name); + kfree(card->vcs[0]); + card->vcs[0] = NULL; return -ENOMEM; } |