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| author | Hans Petter Selasky <hselasky@FreeBSD.org> | 2022-06-13 14:55:14 +0000 |
|---|---|---|
| committer | Hans Petter Selasky <hselasky@FreeBSD.org> | 2022-06-13 15:00:16 +0000 |
| commit | 66a0bc2105e43e54abfaa9f48b76c28371fa2d62 (patch) | |
| tree | 5dc370e602eae6fb31a3830a5be172b6e8f9490a /sys/ofed | |
| parent | e4d178d093281419c5ad9dea1c497bceb54d0018 (diff) | |
| download | src-66a0bc2105e43e54abfaa9f48b76c28371fa2d62.tar.gz src-66a0bc2105e43e54abfaa9f48b76c28371fa2d62.zip | |
ibcore: Fix use-after-free access in ucma_close()
The error in ucma_create_id() left ctx in the list of contexts belong
to ucma file descriptor. The attempt to close this file descriptor causes
to use-after-free accesses while iterating over such list.
Linux commit:
ed65a4dc22083e73bac599ded6a262318cad7baf
PR: 264650
MFC after: 1 week
Sponsored by: NVIDIA Networking
Diffstat (limited to 'sys/ofed')
| -rw-r--r-- | sys/ofed/drivers/infiniband/core/ib_ucma.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/ofed/drivers/infiniband/core/ib_ucma.c b/sys/ofed/drivers/infiniband/core/ib_ucma.c index 878e4d348234..0082c60f0b6c 100644 --- a/sys/ofed/drivers/infiniband/core/ib_ucma.c +++ b/sys/ofed/drivers/infiniband/core/ib_ucma.c @@ -508,6 +508,9 @@ err1: mutex_lock(&mut); idr_remove(&ctx_idr, ctx->id); mutex_unlock(&mut); + mutex_lock(&file->mut); + list_del(&ctx->list); + mutex_unlock(&file->mut); kfree(ctx); return ret; } |