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CVE-2023-53769— virt/coco/sev-guest: Double-buffer messages

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，该漏洞源于直接操作共享内存，可能导致信息泄露或完整性破坏。

CVSS 9.3 · Critical EPSS 0.10% · P1

Possible ATT&CK Techniques 1 AI

T1407

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux d5af44dde5461d125d1602ac913ab5c6bdf09b8b< 577a64725bfd77645986168e953d405067ee565b affected
d5af44dde5461d125d1602ac913ab5c6bdf09b8b< c27dafc4aa50a29ec927b3aa84ac7b430071f682 affected
d5af44dde5461d125d1602ac913ab5c6bdf09b8b< 4b69c63f716cfda38e1210e65b68f67f6cee2ddf affected
d5af44dde5461d125d1602ac913ab5c6bdf09b8b< 965006103a14703cc42043bbf9b5e0cdf7a468ad affected
5.19 affected
< 5.19 unaffected
6.1.28≤ 6.1.* unaffected
6.2.15≤ 6.2.* unaffected
… +2 more rows
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I. Basic Information for CVE-2023-53769

Vulnerability Information
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Vulnerability Title
virt/coco/sev-guest: Double-buffer messages
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: virt/coco/sev-guest: Double-buffer messages The encryption algorithms read and write directly to shared unencrypted memory, which may leak information as well as permit the host to tamper with the message integrity. Instead, copy whole messages in or out as needed before doing any computation on them.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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，该漏洞源于直接操作共享内存，可能导致信息泄露或完整性破坏。
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 d5af44dde5461d125d1602ac913ab5c6bdf09b8b ~ 577a64725bfd77645986168e953d405067ee565b -
Linux Linux 5.19 -

II. Public POCs for CVE-2023-53769

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III. Intelligence Information for CVE-2023-53769

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Same Patch Batch · Linux · 2025-12-08 · 82 CVEs total

CVE-2023-53751 9.8 CRITICAL cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname
CVE-2025-40320 9.8 CRITICAL smb: client: fix potential cfid UAF in smb2_query_info_compound
CVE-2025-40318 8.8 HIGH Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once
CVE-2023-53764 8.8 HIGH wifi: ath12k: Handle lock during peer_id find
CVE-2023-53762 8.8 HIGH Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync
CVE-2025-40292 8.4 HIGH virtio-net: fix received length check in big packets
CVE-2025-40309 8.0 HIGH Bluetooth: SCO: Fix UAF on sco_conn_free
CVE-2025-40291 7.8 HIGH io_uring: fix regbuf vector size truncation
CVE-2023-53752 7.8 HIGH net: deal with integer overflows in kmalloc_reserve()
CVE-2023-53753 7.8 HIGH drm/amd/display: fix mapping to non-allocated address
CVE-2025-40323 7.8 HIGH fbcon: Set fb_display[i]->mode to NULL when the mode is released
CVE-2023-53759 7.8 HIGH HID: hidraw: fix data race on device refcount
CVE-2025-40319 7.8 HIGH bpf: Sync pending IRQ work before freeing ring buffer
CVE-2025-40290 7.8 HIGH xsk: avoid data corruption on cq descriptor number
CVE-2025-40317 7.8 HIGH regmap: slimbus: fix bus_context pointer in regmap init calls
CVE-2023-53747 7.8 HIGH vc_screen: reload load of struct vc_data pointer in vcs_write() to avoid UAF
CVE-2023-53768 7.8 HIGH regmap-irq: Fix out-of-bounds access when allocating config buffers
CVE-2022-50623 7.8 HIGH fpga: prevent integer overflow in dfl_feature_ioctl_set_irq()
CVE-2023-53763 7.8 HIGH Revert "f2fs: fix to do sanity check on extent cache correctly"
CVE-2025-40304 7.8 HIGH fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds

Showing top 20 of 82 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53769

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