Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2023-52455— iommu: Don't reserve 0-length IOVA region

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，该漏洞源于当引导加载程序/固件未设置帧缓冲区时，可能导致 IOVA rbtree 被破坏。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.24% · P13

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux a5bf3cfce8cb77d9d24613ab52d520896f83dd48< 98b8a550da83cc392a14298c4b3eaaf0332ae6ad affected
a5bf3cfce8cb77d9d24613ab52d520896f83dd48< 5e23e283910c9f30248732ae0770bcb0c9438abf affected
a5bf3cfce8cb77d9d24613ab52d520896f83dd48< bb57f6705960bebeb832142ce9abf43220c3eab1 affected
6.3 affected
< 6.3 unaffected
6.6.14≤ 6.6.* unaffected
6.7.2≤ 6.7.* unaffected
6.8≤ * unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2023-52455

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
iommu: Don't reserve 0-length IOVA region
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iommu: Don't reserve 0-length IOVA region When the bootloader/firmware doesn't setup the framebuffers, their address and size are 0 in "iommu-addresses" property. If IOVA region is reserved with 0 length, then it ends up corrupting the IOVA rbtree with an entry which has pfn_hi < pfn_lo. If we intend to use display driver in kernel without framebuffer then it's causing the display IOMMU mappings to fail as entire valid IOVA space is reserved when address and length are passed as 0. An ideal solution would be firmware removing the "iommu-addresses" property and corresponding "memory-region" if display is not present. But the kernel should be able to handle this by checking for size of IOVA region and skipping the IOVA reservation if size is 0. Also, add a warning if firmware is requesting 0-length IOVA region reservation.
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，该漏洞源于当引导加载程序/固件未设置帧缓冲区时，可能导致 IOVA rbtree 被破坏。
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 a5bf3cfce8cb77d9d24613ab52d520896f83dd48 ~ 98b8a550da83cc392a14298c4b3eaaf0332ae6ad -
Linux Linux 6.3 -

II. Public POCs for CVE-2023-52455

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2023-52455

请登录查看更多情报信息。

Other References for CVE-2023-52455 (3)

Same Patch Batch · Linux · 2024-02-23 · 19 CVEs total

CVE-2024-26594 9.1 CRITICAL ksmbd: validate mech token in session setup
CVE-2024-26598 8.8 HIGH KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache
CVE-2024-26597 7.8 HIGH net: qualcomm: rmnet: fix global oob in rmnet_policy
CVE-2023-52461 7.8 HIGH drm/sched: Fix bounds limiting when given a malformed entity
CVE-2023-52454 7.5 HIGH nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length
CVE-2023-52453 7.1 HIGH hisi_acc_vfio_pci: Update migration data pointer correctly on saving/resume
CVE-2024-26593 i2c: i801: Fix block process call transactions
CVE-2023-52456 serial: imx: fix tx statemachine deadlock
CVE-2023-52458 block: add check that partition length needs to be aligned with block size
CVE-2023-52457 serial: 8250: omap: Don't skip resource freeing if pm_runtime_resume_and_get() failed
CVE-2023-52459 media: v4l: async: Fix duplicated list deletion
CVE-2023-52460 drm/amd/display: Fix NULL pointer dereference at hibernate
CVE-2023-52462 bpf: fix check for attempt to corrupt spilled pointer
CVE-2023-52464 EDAC/thunderx: Fix possible out-of-bounds string access
CVE-2023-52463 efivarfs: force RO when remounting if SetVariable is not supported
CVE-2024-26596 net: dsa: fix netdev_priv() dereference before check on non-DSA netdevice events
CVE-2024-26595 mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path
CVE-2024-26599 pwm: Fix out-of-bounds access in of_pwm_single_xlate()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-52455

No comments yet

Leave a comment