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authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-12 15:48:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-12 15:48:10 -0800
commita4d8c7c9f7754405c52c59e1b1e984df5749d7bb (patch)
treefd2e53ae06ffaaaa96cda893ec01da725878a94a
parenta18e2fa5e670a1b84e66522b221c42875b02028a (diff)
parentcc25b994acfbc901429da682d0f73c190e960206 (diff)
downloadlinux-stericsson-a4d8c7c9f7754405c52c59e1b1e984df5749d7bb.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem fixes from James Morris: "This includes several fixes for TPM, as well as a fix for the x.509 certificate parser to address CVE-2015-5327" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: X.509: Fix the time validation [ver #2] tpm: fix compat 'ppi' link handling in tpm_chip_register() tpm: fix missing migratable flag in sealing functionality for TPM2 TPM: revert the list handling logic fixed in 398a1e7 TPM: Avoid reference to potentially freed memory tpm_tis: restore IRQ vector in IO memory after failed probing tpm_tis: free irq after probing
-rw-r--r--crypto/asymmetric_keys/x509_cert_parser.c12
-rw-r--r--drivers/char/tpm/tpm-chip.c20
-rw-r--r--drivers/char/tpm/tpm2-cmd.c15
-rw-r--r--drivers/char/tpm/tpm_of.c3
-rw-r--r--drivers/char/tpm/tpm_tis.c8
5 files changed, 37 insertions, 21 deletions
diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c
index 3000ea3b6687..021d39c0ba75 100644
--- a/crypto/asymmetric_keys/x509_cert_parser.c
+++ b/crypto/asymmetric_keys/x509_cert_parser.c
@@ -531,7 +531,11 @@ int x509_decode_time(time64_t *_t, size_t hdrlen,
if (*p != 'Z')
goto unsupported_time;
- mon_len = month_lengths[mon];
+ if (year < 1970 ||
+ mon < 1 || mon > 12)
+ goto invalid_time;
+
+ mon_len = month_lengths[mon - 1];
if (mon == 2) {
if (year % 4 == 0) {
mon_len = 29;
@@ -543,14 +547,12 @@ int x509_decode_time(time64_t *_t, size_t hdrlen,
}
}
- if (year < 1970 ||
- mon < 1 || mon > 12 ||
- day < 1 || day > mon_len ||
+ if (day < 1 || day > mon_len ||
hour > 23 ||
min > 59 ||
sec > 59)
goto invalid_time;
-
+
*_t = mktime64(year, mon, day, hour, min, sec);
return 0;
diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
index f26b0ae23bea..45cc39aabeee 100644
--- a/drivers/char/tpm/tpm-chip.c
+++ b/drivers/char/tpm/tpm-chip.c
@@ -226,21 +226,23 @@ int tpm_chip_register(struct tpm_chip *chip)
if (rc)
goto out_err;
- if (!(chip->flags & TPM_CHIP_FLAG_TPM2)) {
- rc = __compat_only_sysfs_link_entry_to_kobj(&chip->pdev->kobj,
- &chip->dev.kobj,
- "ppi");
- if (rc)
- goto out_err;
- }
-
/* Make the chip available. */
spin_lock(&driver_lock);
- list_add_rcu(&chip->list, &tpm_chip_list);
+ list_add_tail_rcu(&chip->list, &tpm_chip_list);
spin_unlock(&driver_lock);
chip->flags |= TPM_CHIP_FLAG_REGISTERED;
+ if (!(chip->flags & TPM_CHIP_FLAG_TPM2)) {
+ rc = __compat_only_sysfs_link_entry_to_kobj(&chip->pdev->kobj,
+ &chip->dev.kobj,
+ "ppi");
+ if (rc && rc != -ENOENT) {
+ tpm_chip_unregister(chip);
+ return rc;
+ }
+ }
+
return 0;
out_err:
tpm1_chip_unregister(chip);
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index bd7039fafa8a..c12130485fc1 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -443,12 +443,13 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
TPM_DIGEST_SIZE);
/* sensitive */
- tpm_buf_append_u16(&buf, 4 + TPM_DIGEST_SIZE + payload->key_len);
+ tpm_buf_append_u16(&buf, 4 + TPM_DIGEST_SIZE + payload->key_len + 1);
tpm_buf_append_u16(&buf, TPM_DIGEST_SIZE);
tpm_buf_append(&buf, options->blobauth, TPM_DIGEST_SIZE);
- tpm_buf_append_u16(&buf, payload->key_len);
+ tpm_buf_append_u16(&buf, payload->key_len + 1);
tpm_buf_append(&buf, payload->key, payload->key_len);
+ tpm_buf_append_u8(&buf, payload->migratable);
/* public */
tpm_buf_append_u16(&buf, 14);
@@ -573,6 +574,8 @@ static int tpm2_unseal(struct tpm_chip *chip,
u32 blob_handle)
{
struct tpm_buf buf;
+ u16 data_len;
+ u8 *data;
int rc;
rc = tpm_buf_init(&buf, TPM2_ST_SESSIONS, TPM2_CC_UNSEAL);
@@ -591,11 +594,13 @@ static int tpm2_unseal(struct tpm_chip *chip,
rc = -EPERM;
if (!rc) {
- payload->key_len = be16_to_cpup(
+ data_len = be16_to_cpup(
(__be16 *) &buf.data[TPM_HEADER_SIZE + 4]);
+ data = &buf.data[TPM_HEADER_SIZE + 6];
- memcpy(payload->key, &buf.data[TPM_HEADER_SIZE + 6],
- payload->key_len);
+ memcpy(payload->key, data, data_len - 1);
+ payload->key_len = data_len - 1;
+ payload->migratable = data[data_len - 1];
}
tpm_buf_destroy(&buf);
diff --git a/drivers/char/tpm/tpm_of.c b/drivers/char/tpm/tpm_of.c
index 1141456a4b1f..570f30c5c5f4 100644
--- a/drivers/char/tpm/tpm_of.c
+++ b/drivers/char/tpm/tpm_of.c
@@ -53,17 +53,18 @@ int read_log(struct tpm_bios_log *log)
goto cleanup_eio;
}
- of_node_put(np);
log->bios_event_log = kmalloc(*sizep, GFP_KERNEL);
if (!log->bios_event_log) {
pr_err("%s: ERROR - Not enough memory for BIOS measurements\n",
__func__);
+ of_node_put(np);
return -ENOMEM;
}
log->bios_event_log_end = log->bios_event_log + *sizep;
memcpy(log->bios_event_log, __va(*basep), *sizep);
+ of_node_put(np);
return 0;
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 696ef1d56b4f..65f7eecc45b0 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -645,6 +645,7 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info,
{
u32 vendor, intfcaps, intmask;
int rc, i, irq_s, irq_e, probe;
+ int irq_r = -1;
struct tpm_chip *chip;
struct priv_data *priv;
@@ -751,6 +752,7 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info,
irq_s =
ioread8(chip->vendor.iobase +
TPM_INT_VECTOR(chip->vendor.locality));
+ irq_r = irq_s;
if (irq_s) {
irq_e = irq_s;
} else {
@@ -805,6 +807,8 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info,
iowrite32(intmask,
chip->vendor.iobase +
TPM_INT_ENABLE(chip->vendor.locality));
+
+ devm_free_irq(dev, i, chip);
}
}
if (chip->vendor.irq) {
@@ -831,7 +835,9 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info,
chip->vendor.iobase +
TPM_INT_ENABLE(chip->vendor.locality));
}
- }
+ } else if (irq_r != -1)
+ iowrite8(irq_r, chip->vendor.iobase +
+ TPM_INT_VECTOR(chip->vendor.locality));
if (chip->flags & TPM_CHIP_FLAG_TPM2) {
chip->vendor.timeout_a = msecs_to_jiffies(TPM2_TIMEOUT_A);