Revision 0620fddb56dfaf0e1034eeb69d79c73b361debbf authored by Eric Biggers on 08 June 2017, 13:49:26 UTC, committed by James Morris on 09 June 2017, 03:29:48 UTC
While a 'struct key' itself normally does not contain sensitive
information, Documentation/security/keys.txt actually encourages this:
"Having a payload is not required; and the payload can, in fact,
just be a value stored in the struct key itself."
In case someone has taken this advice, or will take this advice in the
future, zero the key structure before freeing it. We might as well, and
as a bonus this could make it a bit more difficult for an adversary to
determine which keys have recently been in use.
This is safe because the key_jar cache does not use a constructor.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
1 parent ee618b4
| File | Mode | Size |
|---|---|---|
| 842 | ||
| fonts | ||
| lz4 | ||
| lzo | ||
| mpi | ||
| raid6 | ||
| reed_solomon | ||
| xz | ||
| zlib_deflate | ||
| zlib_inflate | ||
| .gitignore | -rw-r--r-- | 70 bytes |
| Kconfig | -rw-r--r-- | 12.3 KB |
| Kconfig.debug | -rw-r--r-- | 68.5 KB |
| Kconfig.kasan | -rw-r--r-- | 1.8 KB |
| Kconfig.kgdb | -rw-r--r-- | 4.1 KB |
| Kconfig.kmemcheck | -rw-r--r-- | 2.9 KB |
| Kconfig.ubsan | -rw-r--r-- | 1.5 KB |
| Makefile | -rw-r--r-- | 7.7 KB |
| argv_split.c | -rw-r--r-- | 2.1 KB |
| asn1_decoder.c | -rw-r--r-- | 13.2 KB |
| assoc_array.c | -rw-r--r-- | 52.6 KB |
| atomic64.c | -rw-r--r-- | 4.8 KB |
| atomic64_test.c | -rw-r--r-- | 6.5 KB |
| audit.c | -rw-r--r-- | 1.7 KB |
| bcd.c | -rw-r--r-- | 261 bytes |
| bch.c | -rw-r--r-- | 35.6 KB |
| bitmap.c | -rw-r--r-- | 36.4 KB |
| bitrev.c | -rw-r--r-- | 1.9 KB |
| bsearch.c | -rw-r--r-- | 1.6 KB |
| btree.c | -rw-r--r-- | 19.2 KB |
| bug.c | -rw-r--r-- | 4.9 KB |
| build_OID_registry | -rwxr-xr-x | 4.7 KB |
| bust_spinlocks.c | -rw-r--r-- | 660 bytes |
| chacha20.c | -rw-r--r-- | 2.6 KB |
| check_signature.c | -rw-r--r-- | 599 bytes |
| checksum.c | -rw-r--r-- | 5.0 KB |
| clz_ctz.c | -rw-r--r-- | 1.3 KB |
| clz_tab.c | -rw-r--r-- | 855 bytes |
| cmdline.c | -rw-r--r-- | 5.1 KB |
| compat_audit.c | -rw-r--r-- | 796 bytes |
| cordic.c | -rw-r--r-- | 2.5 KB |
| cpu_rmap.c | -rw-r--r-- | 7.8 KB |
| cpumask.c | -rw-r--r-- | 4.6 KB |
| crc-ccitt.c | -rw-r--r-- | 3.0 KB |
| crc-itu-t.c | -rw-r--r-- | 2.8 KB |
| crc-t10dif.c | -rw-r--r-- | 1.6 KB |
| crc16.c | -rw-r--r-- | 2.8 KB |
| crc32.c | -rw-r--r-- | 9.1 KB |
| crc32defs.h | -rw-r--r-- | 2.0 KB |
| crc32test.c | -rw-r--r-- | 37.5 KB |
| crc7.c | -rw-r--r-- | 2.6 KB |
| crc8.c | -rw-r--r-- | 2.4 KB |
| ctype.c | -rw-r--r-- | 1.4 KB |
| debug_info.c | -rw-r--r-- | 741 bytes |
| debug_locks.c | -rw-r--r-- | 1.2 KB |
| debugobjects.c | -rw-r--r-- | 28.2 KB |
| dec_and_lock.c | -rw-r--r-- | 784 bytes |
| decompress.c | -rw-r--r-- | 1.7 KB |
| decompress_bunzip2.c | -rw-r--r-- | 23.5 KB |
| decompress_inflate.c | -rw-r--r-- | 4.4 KB |
| decompress_unlz4.c | -rw-r--r-- | 4.2 KB |
| decompress_unlzma.c | -rw-r--r-- | 15.8 KB |
| decompress_unlzo.c | -rw-r--r-- | 7.1 KB |
| decompress_unxz.c | -rw-r--r-- | 10.9 KB |
| devres.c | -rw-r--r-- | 9.8 KB |
| digsig.c | -rw-r--r-- | 5.6 KB |
| div64.c | -rw-r--r-- | 4.1 KB |
| dma-debug.c | -rw-r--r-- | 44.2 KB |
| dma-noop.c | -rw-r--r-- | 1.7 KB |
| dma-virt.c | -rw-r--r-- | 1.6 KB |
| dump_stack.c | -rw-r--r-- | 1.2 KB |
| dynamic_debug.c | -rw-r--r-- | 25.3 KB |
| dynamic_queue_limits.c | -rw-r--r-- | 4.3 KB |
| earlycpio.c | -rw-r--r-- | 4.0 KB |
| extable.c | -rw-r--r-- | 3.1 KB |
| fault-inject.c | -rw-r--r-- | 6.0 KB |
| fdt.c | -rw-r--r-- | 69 bytes |
| fdt_empty_tree.c | -rw-r--r-- | 80 bytes |
| fdt_ro.c | -rw-r--r-- | 72 bytes |
| fdt_rw.c | -rw-r--r-- | 72 bytes |
| fdt_strerror.c | -rw-r--r-- | 78 bytes |
| fdt_sw.c | -rw-r--r-- | 72 bytes |
| fdt_wip.c | -rw-r--r-- | 73 bytes |
| find_bit.c | -rw-r--r-- | 4.5 KB |
| flex_array.c | -rw-r--r-- | 11.0 KB |
| flex_proportions.c | -rw-r--r-- | 6.9 KB |
| gcd.c | -rw-r--r-- | 1.3 KB |
| gen_crc32table.c | -rw-r--r-- | 3.2 KB |
| genalloc.c | -rw-r--r-- | 21.6 KB |
| glob.c | -rw-r--r-- | 3.5 KB |
| globtest.c | -rw-r--r-- | 4.2 KB |
| hexdump.c | -rw-r--r-- | 8.3 KB |
| hweight.c | -rw-r--r-- | 2.0 KB |
| idr.c | -rw-r--r-- | 14.3 KB |
| inflate.c | -rw-r--r-- | 38.6 KB |
| int_sqrt.c | -rw-r--r-- | 652 bytes |
| interval_tree.c | -rw-r--r-- | 499 bytes |
| interval_tree_test.c | -rw-r--r-- | 2.3 KB |
| iomap.c | -rw-r--r-- | 6.5 KB |
| iomap_copy.c | -rw-r--r-- | 2.8 KB |
| iommu-common.c | -rw-r--r-- | 7.0 KB |
| iommu-helper.c | -rw-r--r-- | 1.0 KB |
| ioremap.c | -rw-r--r-- | 4.1 KB |
| iov_iter.c | -rw-r--r-- | 32.2 KB |
| irq_poll.c | -rw-r--r-- | 5.4 KB |
| irq_regs.c | -rw-r--r-- | 604 bytes |
| is_single_threaded.c | -rw-r--r-- | 1.4 KB |
| jedec_ddr_data.c | -rw-r--r-- | 3.0 KB |
| kasprintf.c | -rw-r--r-- | 1.4 KB |
| kfifo.c | -rw-r--r-- | 12.7 KB |
| klist.c | -rw-r--r-- | 10.3 KB |
| kobject.c | -rw-r--r-- | 26.1 KB |
| kobject_uevent.c | -rw-r--r-- | 11.3 KB |
| kstrtox.c | -rw-r--r-- | 10.6 KB |
| kstrtox.h | -rw-r--r-- | 254 bytes |
| lcm.c | -rw-r--r-- | 441 bytes |
| libcrc32c.c | -rw-r--r-- | 2.1 KB |
| list_debug.c | -rw-r--r-- | 1.8 KB |
| list_sort.c | -rw-r--r-- | 3.5 KB |
| llist.c | -rw-r--r-- | 3.1 KB |
| locking-selftest-hardirq.h | -rw-r--r-- | 207 bytes |
| locking-selftest-mutex.h | -rw-r--r-- | 120 bytes |
| locking-selftest-rlock-hardirq.h | -rw-r--r-- | 74 bytes |
| locking-selftest-rlock-softirq.h | -rw-r--r-- | 74 bytes |
| locking-selftest-rlock.h | -rw-r--r-- | 158 bytes |
| locking-selftest-rsem.h | -rw-r--r-- | 163 bytes |
| locking-selftest-softirq.h | -rw-r--r-- | 207 bytes |
| locking-selftest-spin-hardirq.h | -rw-r--r-- | 73 bytes |
| locking-selftest-spin-softirq.h | -rw-r--r-- | 73 bytes |
| locking-selftest-spin.h | -rw-r--r-- | 118 bytes |
| locking-selftest-wlock-hardirq.h | -rw-r--r-- | 74 bytes |
| locking-selftest-wlock-softirq.h | -rw-r--r-- | 74 bytes |
| locking-selftest-wlock.h | -rw-r--r-- | 158 bytes |
| locking-selftest-wsem.h | -rw-r--r-- | 163 bytes |
| locking-selftest.c | -rw-r--r-- | 40.1 KB |
| lockref.c | -rw-r--r-- | 3.9 KB |
| lru_cache.c | -rw-r--r-- | 19.4 KB |
| memory-notifier-error-inject.c | -rw-r--r-- | 1.1 KB |
| memweight.c | -rw-r--r-- | 999 bytes |
| net_utils.c | -rw-r--r-- | 604 bytes |
| netdev-notifier-error-inject.c | -rw-r--r-- | 1.5 KB |
| nlattr.c | -rw-r--r-- | 15.8 KB |
| nmi_backtrace.c | -rw-r--r-- | 2.9 KB |
| nodemask.c | -rw-r--r-- | 617 bytes |
| notifier-error-inject.c | -rw-r--r-- | 2.7 KB |
| notifier-error-inject.h | -rw-r--r-- | 614 bytes |
| of-reconfig-notifier-error-inject.c | -rw-r--r-- | 1.3 KB |
| oid_registry.c | -rw-r--r-- | 3.8 KB |
| once.c | -rw-r--r-- | 1.3 KB |
| parman.c | -rw-r--r-- | 10.6 KB |
| parser.c | -rw-r--r-- | 8.4 KB |
| pci_iomap.c | -rw-r--r-- | 4.2 KB |
| percpu-refcount.c | -rw-r--r-- | 12.4 KB |
| percpu_counter.c | -rw-r--r-- | 5.5 KB |
| percpu_ida.c | -rw-r--r-- | 9.5 KB |
| percpu_test.c | -rw-r--r-- | 3.2 KB |
| plist.c | -rw-r--r-- | 5.9 KB |
| pm-notifier-error-inject.c | -rw-r--r-- | 1.1 KB |
| prime_numbers.c | -rw-r--r-- | 6.5 KB |
| radix-tree.c | -rw-r--r-- | 62.3 KB |
| random32.c | -rw-r--r-- | 12.7 KB |
| ratelimit.c | -rw-r--r-- | 1.6 KB |
| rational.c | -rw-r--r-- | 1.5 KB |
| rbtree.c | -rw-r--r-- | 17.4 KB |
| rbtree_test.c | -rw-r--r-- | 5.5 KB |
| reciprocal_div.c | -rw-r--r-- | 492 bytes |
| refcount.c | -rw-r--r-- | 10.1 KB |
| rhashtable.c | -rw-r--r-- | 27.1 KB |
| sbitmap.c | -rw-r--r-- | 12.5 KB |
| scatterlist.c | -rw-r--r-- | 18.7 KB |
| seq_buf.c | -rw-r--r-- | 7.8 KB |
| sg_pool.c | -rw-r--r-- | 3.6 KB |
| sg_split.c | -rw-r--r-- | 5.1 KB |
| sha1.c | -rw-r--r-- | 6.1 KB |
| show_mem.c | -rw-r--r-- | 1.3 KB |
| siphash.c | -rw-r--r-- | 11.7 KB |
| smp_processor_id.c | -rw-r--r-- | 1.3 KB |
| sort.c | -rw-r--r-- | 2.4 KB |
| stackdepot.c | -rw-r--r-- | 8.5 KB |
| stmp_device.c | -rw-r--r-- | 2.1 KB |
| string.c | -rw-r--r-- | 20.6 KB |
| string_helpers.c | -rw-r--r-- | 13.5 KB |
| strncpy_from_user.c | -rw-r--r-- | 3.1 KB |
| strnlen_user.c | -rw-r--r-- | 4.3 KB |
| swiotlb.c | -rw-r--r-- | 28.3 KB |
| syscall.c | -rw-r--r-- | 2.6 KB |
| test-kstrtox.c | -rw-r--r-- | 17.3 KB |
| test-string_helpers.c | -rw-r--r-- | 10.3 KB |
| test_bitmap.c | -rw-r--r-- | 9.0 KB |
| test_bpf.c | -rw-r--r-- | 137.8 KB |
| test_firmware.c | -rw-r--r-- | 4.8 KB |
| test_hash.c | -rw-r--r-- | 6.3 KB |
| test_hexdump.c | -rw-r--r-- | 5.7 KB |
| test_kasan.c | -rw-r--r-- | 10.0 KB |
| test_list_sort.c | -rw-r--r-- | 3.4 KB |
| test_module.c | -rw-r--r-- | 753 bytes |
| test_parman.c | -rw-r--r-- | 11.2 KB |
| test_printf.c | -rw-r--r-- | 12.4 KB |
| test_rhashtable.c | -rw-r--r-- | 10.3 KB |
| test_siphash.c | -rw-r--r-- | 7.5 KB |
| test_sort.c | -rw-r--r-- | 754 bytes |
| test_static_key_base.c | -rw-r--r-- | 2.0 KB |
| test_static_keys.c | -rw-r--r-- | 6.0 KB |
| test_user_copy.c | -rw-r--r-- | 5.6 KB |
| test_uuid.c | -rw-r--r-- | 3.4 KB |
| textsearch.c | -rw-r--r-- | 9.4 KB |
| timerqueue.c | -rw-r--r-- | 3.1 KB |
| ts_bm.c | -rw-r--r-- | 5.3 KB |
| ts_fsm.c | -rw-r--r-- | 10.6 KB |
| ts_kmp.c | -rw-r--r-- | 4.3 KB |
| ubsan.c | -rw-r--r-- | 10.9 KB |
| ubsan.h | -rw-r--r-- | 1.5 KB |
| ucs2_string.c | -rw-r--r-- | 2.4 KB |
| usercopy.c | -rw-r--r-- | 629 bytes |
| uuid.c | -rw-r--r-- | 3.1 KB |
| vsprintf.c | -rw-r--r-- | 66.8 KB |
| win_minmax.c | -rw-r--r-- | 3.3 KB |
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