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CVE-2026-23468— drm/amdgpu: Limit BO list entry count to prevent resource exhaustion

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，该漏洞源于缺少BO列表条目数量限制，可能导致资源耗尽。

AI Predicted 7.5 Difficulty: Easy EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux d38ceaf99ed015f2a0b9af3499791bd3a3daae21< c833d6c7199c5b5fca9ec95593acd539ec9c171c affected
d38ceaf99ed015f2a0b9af3499791bd3a3daae21< e620378aab78d415bd8a15a2f91c145906520288 affected
d38ceaf99ed015f2a0b9af3499791bd3a3daae21< 2723e6851309531ce61aed74e93a0cd268cc862a affected
d38ceaf99ed015f2a0b9af3499791bd3a3daae21< 5ce4a38e6c2488949e373d5066303f9c128db614 affected
d38ceaf99ed015f2a0b9af3499791bd3a3daae21< f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9 affected
d38ceaf99ed015f2a0b9af3499791bd3a3daae21< 6270b1a5dab94665d7adce3dc78bc9066ed28bdd affected
4.2 affected
< 4.2 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-23468

Vulnerability Information
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Vulnerability Title
drm/amdgpu: Limit BO list entry count to prevent resource exhaustion
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Limit BO list entry count to prevent resource exhaustion Userspace can pass an arbitrary number of BO list entries via the bo_number field. Although the previous multiplication overflow check prevents out-of-bounds allocation, a large number of entries could still cause excessive memory allocation (up to potentially gigabytes) and unnecessarily long list processing times. Introduce a hard limit of 128k entries per BO list, which is more than sufficient for any realistic use case (e.g., a single list containing all buffers in a large scene). This prevents memory exhaustion attacks and ensures predictable performance. Return -EINVAL if the requested entry count exceeds the limit (cherry picked from commit 688b87d39e0aa8135105b40dc167d74b5ada5332)
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，该漏洞源于缺少BO列表条目数量限制，可能导致资源耗尽。
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 d38ceaf99ed015f2a0b9af3499791bd3a3daae21 ~ c833d6c7199c5b5fca9ec95593acd539ec9c171c -
Linux Linux 4.2 -

II. Public POCs for CVE-2026-23468

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III. Intelligence Information for CVE-2026-23468

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Patches & Fixes for CVE-2026-23468 (3)

Same Patch Batch · Linux · 2026-04-03 · 71 CVEs total

CVE-2026-31402 9.8 CRITICAL nfsd: fix heap overflow in NFSv4.0 LOCK replay cache
CVE-2026-23450 9.8 CRITICAL net/smc: fix NULL dereference and UAF in smc_tcp_syn_recv_sock()
CVE-2026-23427 9.8 CRITICAL ksmbd: fix use-after-free in durable v2 replay of active file handles
CVE-2026-23428 9.8 CRITICAL ksmbd: fix use-after-free of share_conf in compound request
CVE-2026-23455 9.1 CRITICAL netfilter: nf_conntrack_h323: check for zero length in DecodeQ931()
CVE-2026-23461 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free in l2cap_unregister_user
CVE-2026-23425 8.8 HIGH KVM: arm64: Fix ID register initialization for non-protected pKVM guests
CVE-2026-23462 8.8 HIGH Bluetooth: HIDP: Fix possible UAF
CVE-2026-23457 8.6 HIGH netfilter: nf_conntrack_sip: fix Content-Length u32 truncation in sip_help_tcp()
CVE-2026-23459 8.2 HIGH ip_tunnel: adapt iptunnel_xmit_stats() to NETDEV_PCPU_STAT_DSTATS
CVE-2026-23456 8.2 HIGH netfilter: nf_conntrack_h323: fix OOB read in decode_int() CONS case
CVE-2026-31393 8.1 HIGH Bluetooth: L2CAP: Validate L2CAP_INFO_RSP payload length before access
CVE-2026-31392 8.1 HIGH smb: client: fix krb5 mount with username option
CVE-2026-31398 7.8 HIGH mm/rmap: fix incorrect pte restoration for lazyfree folios
CVE-2026-23432 7.8 HIGH mshv: Fix use-after-free in mshv_map_user_memory error path
CVE-2026-23437 7.8 HIGH net: shaper: protect late read accesses to the hierarchy
CVE-2026-23458 7.8 HIGH netfilter: ctnetlink: fix use-after-free in ctnetlink_dump_exp_ct()
CVE-2026-23444 7.8 HIGH wifi: mac80211: always free skb on ieee80211_tx_prepare_skb() failure
CVE-2026-23445 7.8 HIGH igc: fix page fault in XDP TX timestamps handling
CVE-2026-23449 7.8 HIGH net/sched: teql: Fix double-free in teql_master_xmit

Showing top 20 of 71 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-23468

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