CVE-2026-52968— KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic
Possible ATT&CK Techniques 1AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 14
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 73f91b004321f2510fa79e66035dbbf1870fcf56< 31a9d9f9942885aae356a1a57c79e82c5b5b0828 | affected |
73f91b004321f2510fa79e66035dbbf1870fcf56< a99a25db131ece5e6c0f7632da606de631efe4f2 | affected | ||
73f91b004321f2510fa79e66035dbbf1870fcf56< 11b8ff5b930b351dd1f6f088dce0beb027ac92d0 | affected | ||
73f91b004321f2510fa79e66035dbbf1870fcf56< b22a2da8792a7bfe743c1a922e77fa499ddedbe8 | affected | ||
73f91b004321f2510fa79e66035dbbf1870fcf56< e7216651b94e92e5433fb2f54b77864642b4ea48 | affected | ||
73f91b004321f2510fa79e66035dbbf1870fcf56< 16d990a15491cf76cd6eef0846e1b4100e63261a | affected | ||
6.0 | affected | ||
< 6.0 | unaffected | ||
| … +6 more rows | |||
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I. Basic Information for CVE-2026-52968
Vulnerability Information
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Vulnerability Title
KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic kvm_s390_pci_aif_enable(), kvm_s390_pci_aif_disable(), and aen_host_forward() index the GAIT by manually multiplying the index with sizeof(struct zpci_gaite). Since aift->gait is already a struct zpci_gaite pointer, this double-scales the offset, accessing element aisb*16 instead of aisb. This causes out-of-bounds accesses when aisb >= 32 (with ZPCI_NR_DEVICES=512) Fix by removing the erroneous sizeof multiplication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/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基金会开源的操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于KVM: s390: pci子系统中GAIT表索引时存在双重缩放指针算术问题，可能导致越界访问。以下版本受到影响：6.0版本。
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
II. Public POCs for CVE-2026-52968
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-52968 (6)
Same Patch Batch · Linux · 2026-06-24 · 219 CVEs total
| CVE-2026-53046 | 9.8 CRITICAL | ksmbd: fix use-after-free from async crypto on Qualcomm crypto engine |
| CVE-2026-53088 | 9.8 CRITICAL | net: bcmgenet: fix off-by-one in bcmgenet_put_txcb |
| CVE-2026-53010 | 9.8 CRITICAL | ksmbd: fix use-after-free in smb2_open during durable reconnect |
| CVE-2026-53006 | 9.8 CRITICAL | ipv6: fix possible UAF in icmpv6_rcv() |
| CVE-2026-53086 | 9.8 CRITICAL | net: bcmgenet: fix racing timeout handler |
| CVE-2026-53002 | 9.8 CRITICAL | netfilter: conntrack: remove sprintf usage |
| CVE-2026-52993 | 9.8 CRITICAL | tipc: fix double-free in tipc_buf_append() |
| CVE-2026-52989 | 9.8 CRITICAL | nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers |
| CVE-2026-52986 | 9.8 CRITICAL | netfilter: nf_conntrack_sip: don't use simple_strtoul |
| CVE-2026-52982 | 9.8 CRITICAL | net: usb: rtl8150: fix use-after-free in rtl8150_start_xmit() |
| CVE-2026-53045 | 9.8 CRITICAL | memory: tegra124-emc: Fix dll_change check |
| CVE-2026-52955 | 9.8 CRITICAL | libceph: Fix potential out-of-bounds access in crush_decode() |
| CVE-2026-53049 | 9.8 CRITICAL | gfs2: add some missing log locking |
| CVE-2026-52914 | 9.8 CRITICAL | batman-adv: fix fragment reassembly length accounting |
| CVE-2026-52931 | 9.8 CRITICAL | batman-adv: tp_meter: avoid use of uninit sender vars |
| CVE-2026-52924 | 9.8 CRITICAL | sctp: purge outqueue on stale COOKIE-ECHO handling |
| CVE-2026-53055 | 9.8 CRITICAL | crypto: hisilicon/sec2 - prevent req used-after-free for sec |
| CVE-2026-53043 | 9.1 CRITICAL | ocfs2/dlm: validate qr_numregions in dlm_match_regions() |
| CVE-2026-52999 | 9.1 CRITICAL | netfilter: nfnetlink_osf: fix out-of-bounds read on option matching |
| CVE-2026-52958 | 9.1 CRITICAL | libceph: Fix potential out-of-bounds access in osdmap_decode() |
Showing top 20 of 219 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
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