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| author | John Johansen <john.johansen@canonical.com> | 2022-09-25 15:36:45 -0700 |
|---|---|---|
| committer | John Johansen <john.johansen@canonical.com> | 2022-10-03 14:49:04 -0700 |
| commit | 14d37a7f14569adbf7a019710762271fa2a9e739 (patch) | |
| tree | a1ee45d7c600d0ee33999a905e78a5ff1540e652 /security | |
| parent | 73c7e91c8bc98a5da94be62a9a4ba2793f86a97b (diff) | |
| download | linux-14d37a7f14569adbf7a019710762271fa2a9e739.tar.gz linux-14d37a7f14569adbf7a019710762271fa2a9e739.tar.bz2 linux-14d37a7f14569adbf7a019710762271fa2a9e739.zip | |
apparmor: make sure the decompression ctx is promperly initialized
The decompress ctx was not properly initialized when reading raw
profile data back to userspace.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 52ccc20c652b ("apparmor: use zstd compression for profile data")
Signed-off-by: John Johansen <john.johansen@canonical.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/apparmor/apparmorfs.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c index f6d83ffde3c4..ddd64b8ebf05 100644 --- a/security/apparmor/apparmorfs.c +++ b/security/apparmor/apparmorfs.c @@ -1327,7 +1327,11 @@ static int decompress_zstd(char *src, size_t slen, char *dst, size_t dlen) ret = -ENOMEM; goto cleanup; } - + ctx = zstd_init_dctx(wksp, wksp_len); + if (ctx == NULL) { + ret = -ENOMEM; + goto cleanup; + } out_len = zstd_decompress_dctx(ctx, dst, dlen, src, slen); if (zstd_is_error(out_len)) { ret = -EINVAL; |