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CVE-2026-45986— crypto: ccree - fix a memory leak in cc_mac_digest()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ccree中cc_mac_digest函数在cc_map_hash_request_final失败时未调用cc_unmap_result，可能导致内存泄漏。

AI Predicted 4.3 Difficulty: Trivial EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 63893811b0fcb52f6eaf9811cc08bddd46f81c3e< 7c21d58fcd6ad8e15a539347254093c93224a8b2 affected
63893811b0fcb52f6eaf9811cc08bddd46f81c3e< f53458c7c756b3e0838d51cf1e9f41b25079801a affected
63893811b0fcb52f6eaf9811cc08bddd46f81c3e< 7cd17993adb8a5d14a7e84d751316a5fdf0c251f affected
63893811b0fcb52f6eaf9811cc08bddd46f81c3e< 3061c9bfb3f5b3522ab174e2fa7473b24422d1c6 affected
63893811b0fcb52f6eaf9811cc08bddd46f81c3e< 22f1dd4ca3bfe77db52cc7df3cc353dc114aab8b affected
63893811b0fcb52f6eaf9811cc08bddd46f81c3e< 910f335786a0a0f0b46c3c8c19a13d25cb4454b6 affected
63893811b0fcb52f6eaf9811cc08bddd46f81c3e< 502440c235fe34cee02b24d7f893841f7565b3bc affected
63893811b0fcb52f6eaf9811cc08bddd46f81c3e< 02c64052fad03699b9c6d1df2f9b444d17e4ac50 affected
… +10 more rows
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I. Basic Information for CVE-2026-45986

Vulnerability Information
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Vulnerability Title
crypto: ccree - fix a memory leak in cc_mac_digest()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: crypto: ccree - fix a memory leak in cc_mac_digest() Add cc_unmap_result() if cc_map_hash_request_final() fails to prevent potential memory leak.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ccree中cc_mac_digest函数在cc_map_hash_request_final失败时未调用cc_unmap_result，可能导致内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 63893811b0fcb52f6eaf9811cc08bddd46f81c3e ~ 7c21d58fcd6ad8e15a539347254093c93224a8b2 -
Linux Linux 4.17 -

II. Public POCs for CVE-2026-45986

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III. Intelligence Information for CVE-2026-45986

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Patches & Fixes for CVE-2026-45986 (7)

Same Patch Batch · Linux · 2026-05-27 · 275 CVEs total

CVE-2026-45972 9.8 CRITICAL smb: client: fix potential UAF and double free in smb2_open_file()
CVE-2026-45988 9.8 CRITICAL rxrpc: Fix re-decryption of RESPONSE packets
CVE-2026-46039 9.8 CRITICAL rxgk: Fix potential integer overflow in length check
CVE-2026-45898 9.8 CRITICAL RDMA/iwcm: Fix workqueue list corruption by removing work_list
CVE-2026-46043 9.1 CRITICAL RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
CVE-2026-46056 8.8 HIGH Bluetooth: hci_event: fix potential UAF in SSP passkey handlers
CVE-2026-45945 8.8 HIGH iommu/vt-d: Fix race condition during PASID entry replacement
CVE-2025-71311 8.2 HIGH fs/ntfs3: Initialize new folios before use
CVE-2026-45843 8.2 HIGH slip: bound decode() reads against the compressed packet length
CVE-2026-46037 8.2 HIGH ipv4: icmp: validate reply type before using icmp_pointers
CVE-2026-46099 8.1 HIGH net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels
CVE-2026-46010 8.1 HIGH rxrpc: Fix error handling in rxgk_extract_token()
CVE-2026-46076 7.9 HIGH KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-45909 7.8 HIGH clk: mediatek: Drop __initconst from gates
CVE-2026-45935 7.8 HIGH fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot
CVE-2026-46036 7.8 HIGH vfio/cdx: Serialize VFIO_DEVICE_SET_IRQS with a per-device mutex
CVE-2026-46062 7.8 HIGH ntfs3: fix integer overflow in run_unpack() volume boundary check
CVE-2026-46065 7.8 HIGH fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info
CVE-2026-45878 7.8 HIGH drm/amdkfd: Fix watch_id bounds checking in debug address watch v2
CVE-2026-45894 7.8 HIGH iommu/vt-d: Clear Present bit before tearing down PASID entry

Showing top 20 of 275 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-45986

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