diff --git a/Documentation/ABI/testing/sysfs-firmware-sev-vulnerabilities b/Documentation/ABI/testing/sysfs-firmware-sev-vulnerabilities
new file mode 100644
index 000000000000..964362558bb2
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-sev-vulnerabilities
@@ -0,0 +1,19 @@
+What:		/sys/firmware/sev/vulnerabilities/supported_mitigations
+Date:		June 2026
+Contact:	linux-crypto@vger.kernel.org
+Description:
+		Read-only interface that reports the vector of SEV-SNP
+		firmware vulnerability mitigations supported by the firmware.
+
+What:		/sys/firmware/sev/vulnerabilities/verified_mitigations
+Date:		June 2026
+Contact:	linux-crypto@vger.kernel.org
+Description:
+		Read/write interface that reports the vector of SEV-SNP
+		firmware vulnerability mitigations already verified by the
+		firmware. Writing a vector value requests the firmware to
+		VERIFY the corresponding mitigation bit(s).
+
+		The list of supported mitigations and the meaning of each
+		vector bit are both platform- and bug-specific and are
+		published as part of the AMD Security Bulletin.
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c
index ca473ca198b8..8be4dab05cbb 100644
--- a/drivers/crypto/ccp/sev-dev.c
+++ b/drivers/crypto/ccp/sev-dev.c
@@ -245,6 +245,7 @@ static int sev_cmd_buffer_len(int cmd)
 	case SEV_CMD_SNP_LAUNCH_FINISH:		return sizeof(struct sev_data_snp_launch_finish);
 	case SEV_CMD_SNP_DBG_DECRYPT:		return sizeof(struct sev_data_snp_dbg);
 	case SEV_CMD_SNP_DBG_ENCRYPT:		return sizeof(struct sev_data_snp_dbg);
+	case SEV_CMD_SNP_VERIFY_MITIGATION:	return sizeof(struct sev_data_snp_verify_mitigation);
 	case SEV_CMD_SNP_PAGE_UNSMASH:		return sizeof(struct sev_data_snp_page_unsmash);
 	case SEV_CMD_SNP_PLATFORM_STATUS:	return sizeof(struct sev_data_snp_addr);
 	case SEV_CMD_SNP_GUEST_REQUEST:		return sizeof(struct sev_data_snp_guest_request);
@@ -1352,6 +1353,162 @@ static int snp_filter_reserved_mem_regions(struct resource *rs, void *arg)
 	return 0;
 }
 
+#ifdef CONFIG_SYSFS
+static int snp_verify_mitigation(u16 command, u64 vector,
+				 struct sev_data_snp_verify_mitigation_dst *dst)
+{
+	struct sev_data_snp_verify_mitigation_dst *mit_dst = NULL;
+	struct sev_data_snp_verify_mitigation data = {0};
+	struct sev_device *sev = psp_master->sev_data;
+	int ret, error = 0;
+
+	mit_dst = snp_alloc_firmware_page(GFP_KERNEL | __GFP_ZERO);
+	if (!mit_dst)
+		return -ENOMEM;
+
+	data.length = sizeof(data);
+	data.subcommand = command;
+	data.vector = vector;
+	data.dst_paddr = __psp_pa(mit_dst);
+	data.dst_paddr_en = true;
+
+	ret = sev_do_cmd(SEV_CMD_SNP_VERIFY_MITIGATION, &data, &error);
+	if (!ret)
+		memcpy(dst, mit_dst, sizeof(*mit_dst));
+	else
+		dev_err(sev->dev, "SNP_VERIFY_MITIGATION command failed, ret = %d, error = %#x\n",
+			ret, error);
+
+	snp_free_firmware_page(mit_dst);
+
+	return ret;
+}
+
+static ssize_t supported_mitigations_show(struct kobject *kobj,
+					  struct kobj_attribute *attr, char *buf)
+{
+	struct sev_data_snp_verify_mitigation_dst dst;
+	int ret;
+
+	ret = snp_verify_mitigation(SNP_MIT_SUBCMD_REQ_STATUS, 0, &dst);
+	if (ret)
+		return ret;
+
+	return sysfs_emit(buf, "0x%llx\n", dst.mit_supported_vector);
+}
+
+static struct kobj_attribute supported_attr =
+		__ATTR_RO_MODE(supported_mitigations, 0400);
+
+static ssize_t verified_mitigations_show(struct kobject *kobj,
+					 struct kobj_attribute *attr, char *buf)
+{
+	struct sev_data_snp_verify_mitigation_dst dst;
+	int ret;
+
+	ret = snp_verify_mitigation(SNP_MIT_SUBCMD_REQ_STATUS, 0, &dst);
+	if (ret)
+		return ret;
+
+	return sysfs_emit(buf, "0x%llx\n", dst.mit_verified_vector);
+}
+
+static ssize_t verified_mitigations_store(struct kobject *kobj,
+					  struct kobj_attribute *attr,
+					  const char *buf, size_t count)
+{
+	struct sev_data_snp_verify_mitigation_dst dst;
+	struct sev_device *sev = psp_master->sev_data;
+	u64 vector;
+	int ret;
+
+	ret = kstrtoull(buf, 0, &vector);
+	if (ret)
+		return ret;
+
+	/*
+	 * The firmware verifies a single mitigation per call. Reject vectors
+	 * with more than one bit set early to avoid a guaranteed-to-fail call
+	 */
+	if (hweight64(vector) != 1)
+		return -EINVAL;
+
+	ret = snp_verify_mitigation(SNP_MIT_SUBCMD_REQ_VERIFY, vector, &dst);
+	if (ret)
+		return ret;
+
+	if (dst.mit_failure_status) {
+		dev_err(sev->dev, "Verify Mitigation - failure status: 0x%x\n",
+			dst.mit_failure_status);
+		return -EINVAL;
+	}
+
+	return count;
+}
+
+static struct kobj_attribute verified_attr =
+		__ATTR_RW_MODE(verified_mitigations, 0600);
+
+static struct attribute *mitigation_attrs[] = {
+	&supported_attr.attr,
+	&verified_attr.attr,
+	NULL
+};
+
+static const struct attribute_group mit_attr_group = {
+	.attrs = mitigation_attrs,
+};
+
+static void sev_snp_register_verify_mitigation(struct sev_device *sev)
+{
+	int rc;
+
+	if (!(sev->snp_feat_info_0.ecx & SNP_VERIFY_MITIGATION_SUPPORTED) ||
+	    sev->verify_mit)
+		return;
+
+	if (!sev->sev_kobj) {
+		sev->sev_kobj = kobject_create_and_add("sev", firmware_kobj);
+		if (!sev->sev_kobj)
+			return;
+	}
+
+	sev->verify_mit = kobject_create_and_add("vulnerabilities", sev->sev_kobj);
+	if (!sev->verify_mit)
+		goto err_sev_kobj;
+
+	rc = sysfs_create_group(sev->verify_mit, &mit_attr_group);
+	if (rc)
+		goto err_verify_mit;
+
+	return;
+
+err_verify_mit:
+	kobject_put(sev->verify_mit);
+	sev->verify_mit = NULL;
+err_sev_kobj:
+	kobject_put(sev->sev_kobj);
+	sev->sev_kobj = NULL;
+}
+
+static void sev_snp_unregister_verify_mitigation(struct sev_device *sev)
+{
+	if (sev->verify_mit) {
+		sysfs_remove_group(sev->verify_mit, &mit_attr_group);
+		kobject_put(sev->verify_mit);
+		sev->verify_mit = NULL;
+	}
+
+	if (sev->sev_kobj) {
+		kobject_put(sev->sev_kobj);
+		sev->sev_kobj = NULL;
+	}
+}
+#else	// CONFIG_SYSFS
+static void sev_snp_register_verify_mitigation(struct sev_device *sev) { }
+static void sev_snp_unregister_verify_mitigation(struct sev_device *sev) { }
+#endif	// CONFIG_SYSFS
+
 static int __sev_snp_init_locked(int *error, unsigned int max_snp_asid)
 {
 	struct sev_data_range_list *snp_range_list __free(kfree) = NULL;
@@ -1675,6 +1832,17 @@ int sev_platform_init(struct sev_platform_init_args *args)
 	rc = _sev_platform_init_locked(args);
 	mutex_unlock(&sev_cmd_mutex);
 
+	/*
+	 * Register the sysfs interface outside the sev_cmd_mutex. The
+	 * _show()/_store() handlers issue SEV commands that acquire the
+	 * sev_cmd_mutex, so creating (and on the shutdown path, removing) the
+	 * sysfs group must stay outside that lock. sysfs provides its own
+	 * synchronization between group creation/removal and concurrent
+	 * attribute access.
+	 */
+	if (!rc)
+		sev_snp_register_verify_mitigation(psp_master->sev_data);
+
 	return rc;
 }
 EXPORT_SYMBOL_GPL(sev_platform_init);
@@ -2769,6 +2937,15 @@ static void sev_firmware_shutdown(struct sev_device *sev)
 	if (sev->tio_status)
 		sev_tsm_uninit(sev);
 
+	/*
+	 * Remove the sysfs interface before taking the sev_cmd_mutex.
+	 * sysfs_remove_group() waits for in-flight _show()/_store() handlers
+	 * to drain, and those handlers issue SNP_VERIFY_MITIGATION via
+	 * sev_do_cmd() which acquires the sev_cmd_mutex. Removing the group
+	 * while holding the mutex could therefore deadlock.
+	 */
+	sev_snp_unregister_verify_mitigation(sev);
+
 	mutex_lock(&sev_cmd_mutex);
 
 	__sev_firmware_shutdown(sev, false);
diff --git a/drivers/crypto/ccp/sev-dev.h b/drivers/crypto/ccp/sev-dev.h
index b1cd556bbbf6..d5e596606def 100644
--- a/drivers/crypto/ccp/sev-dev.h
+++ b/drivers/crypto/ccp/sev-dev.h
@@ -59,6 +59,9 @@ struct sev_device {
 
 	bool snp_initialized;
 
+	struct kobject *sev_kobj;
+	struct kobject *verify_mit;
+
 	struct sev_user_data_status sev_plat_status;
 
 	struct sev_user_data_snp_status snp_plat_status;
diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h
index ce16bbc0b308..03a79786df1d 100644
--- a/include/linux/psp-sev.h
+++ b/include/linux/psp-sev.h
@@ -129,6 +129,7 @@ enum sev_cmd {
 	SEV_CMD_SNP_LAUNCH_FINISH	= 0x0A2,
 	SEV_CMD_SNP_DBG_DECRYPT		= 0x0B0,
 	SEV_CMD_SNP_DBG_ENCRYPT		= 0x0B1,
+	SEV_CMD_SNP_VERIFY_MITIGATION	= 0x0B2,
 	SEV_CMD_SNP_PAGE_SWAP_OUT	= 0x0C0,
 	SEV_CMD_SNP_PAGE_SWAP_IN	= 0x0C1,
 	SEV_CMD_SNP_PAGE_MOVE		= 0x0C2,
@@ -898,10 +899,60 @@ struct snp_feature_info {
 #define SNP_CIPHER_TEXT_HIDING_SUPPORTED	BIT(3)
 #define SNP_AES_256_XTS_POLICY_SUPPORTED	BIT(4)
 #define SNP_CXL_ALLOW_POLICY_SUPPORTED		BIT(5)
+#define SNP_VERIFY_MITIGATION_SUPPORTED		BIT(13)
 
 /* Feature bits in EBX */
 #define SNP_SEV_TIO_SUPPORTED			BIT(1)
 
+#define SNP_MIT_SUBCMD_REQ_STATUS      0x0
+#define SNP_MIT_SUBCMD_REQ_VERIFY      0x1
+
+/**
+ * struct sev_data_snp_verify_mitigation - SNP_VERIFY_MITIGATION command params
+ *
+ * @length: Length of the command buffer read by the PSP
+ * @subcommand: Mitigation sub-command for the firmware to execute.
+ *              REQ_STATUS: 0x0 - Request status about currently supported and
+ *                                verified mitigations
+ *              REQ_VERIFY: 0x1 - Request to initiate verification mitigation
+ *                                operation on a specific mitigation
+ * @rsvd: Reserved
+ * @vector: Bit specifying the vulnerability mitigation to process
+ * @dst_paddr_en: Destination paddr enabled
+ * @src_paddr_en: Source paddr enabled
+ * @rsvd1: Reserved
+ * @rsvd2: Reserved
+ * @src_paddr: Source address for optional input data
+ * @dst_paddr: Destination address to write the result
+ * @rsvd3: Reserved
+ */
+struct sev_data_snp_verify_mitigation {
+	u32 length;
+	u16 subcommand;
+	u16 rsvd;
+	u64 vector;
+	u32 dst_paddr_en : 1,
+	    src_paddr_en : 1,
+	    rsvd1 : 30;
+	u8 rsvd2[4];
+	u64 src_paddr;
+	u64 dst_paddr;
+	u8 rsvd3[24];
+} __packed;
+
+/**
+ * struct sev_data_snp_verify_mitigation_dst - mitigation result vectors
+ *
+ * @mit_verified_vector: Bit vector of vulnerability mitigations verified
+ * @mit_supported_vector: Bit vector of vulnerability mitigations supported
+ * @mit_failure_status: Status of the verification operation
+ */
+struct sev_data_snp_verify_mitigation_dst {
+	u64 mit_verified_vector;                /* OUT */
+	u64 mit_supported_vector;               /* OUT */
+	u32 mit_failure_status;                 /* OUT */
+} __packed;
+
 /**
  * struct sev_snp_tcb_version_genoa_milan
  *