CVE-2026-53132— vsock/virtio: fix potential unbounded skb queue
Possible ATT&CK Techniques 1AI
T1499 · Endpoint Denial of ServiceAffected Version Matrix 12
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 077706165717686a2a6a71405fef036cd5b37ae0< 1eca304f97a34ed5e921e1f0e06c8b241f25bf12 | affected |
077706165717686a2a6a71405fef036cd5b37ae0< 9bdc637fde66b63d6cad0caacd034888bb7bf5f5 | affected | ||
077706165717686a2a6a71405fef036cd5b37ae0< 100d5b2ffdc6468b9e48532641f29e83efdcb63c | affected | ||
077706165717686a2a6a71405fef036cd5b37ae0< 059b7dbd20a6f0c539a45ddff1573cb8946685b5 | affected | ||
5852a2b573f7a3a29df46296e56aa3491e589cdf | affected | ||
6.1.63< 6.2 | affected | ||
6.3 | affected | ||
< 6.3 | unaffected | ||
| … +4 more rows | |||
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I. Basic Information for CVE-2026-53132
Vulnerability Information
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Vulnerability Title
vsock/virtio: fix potential unbounded skb queue
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix potential unbounded skb queue virtio_transport_inc_rx_pkt() checks vvs->rx_bytes + len > vvs->buf_alloc. virtio_transport_recv_enqueue() skips coalescing for packets with VIRTIO_VSOCK_SEQ_EOM. If fed with packets with len == 0 and VIRTIO_VSOCK_SEQ_EOM, a very large number of packets can be queued because vvs->rx_bytes stays at 0. Fix this by estimating the skb metadata size: (Number of skbs in the queue) * SKB_TRUESIZE(0)
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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virtio_transport_inc_rx_pkt()函数对vvs->rx_bytes的检查不充分，可能导致大量空数据包被排队，造成无界skb队列。
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-2026-53132
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-53132 (4)
Same Patch Batch · Linux · 2026-06-25 · 146 CVEs total
| CVE-2026-53176 | 9.8 CRITICAL | IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN |
| CVE-2026-53175 | 9.8 CRITICAL | inet: frags: fix use-after-free caused by the fqdir_pre_exit() flush |
| CVE-2026-53215 | 9.8 CRITICAL | net: mvpp2: refill RX buffers before XDP or skb use |
| CVE-2026-53216 | 9.8 CRITICAL | net: mvpp2: limit XDP frame size to the RX buffer |
| CVE-2026-53221 | 9.8 CRITICAL | ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup() |
| CVE-2026-53228 | 9.8 CRITICAL | ipv6: sit: reload inner IPv6 header after GSO offloads |
| CVE-2026-53246 | 9.8 CRITICAL | sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing |
| CVE-2026-53247 | 9.8 CRITICAL | net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown |
| CVE-2026-53151 | 9.8 CRITICAL | rxrpc: Fix the ACK parser to extract the SACK table for parsing |
| CVE-2026-53260 | 9.8 CRITICAL | tcp: Add preempt_{disable,enable}_nested() in reqsk_queue_hash_req(). |
| CVE-2026-53131 | 9.4 CRITICAL | netfilter: require Ethernet MAC header before using eth_hdr() |
| CVE-2026-53186 | 9.1 CRITICAL | RDMA/srp: bound SRP_RSP sense copy by the received length |
| CVE-2026-53224 | 9.1 CRITICAL | sctp: validate embedded INIT chunk and address list lengths in cookie |
| CVE-2026-53225 | 9.1 CRITICAL | sctp: fix uninit-value in __sctp_rcv_asconf_lookup() |
| CVE-2026-53198 | 8.8 HIGH | ksmbd: fix use-after-free of a deferred file_lock on double SMB2_CANCEL |
| CVE-2026-53248 | 8.8 HIGH | net: airoha: Fix use-after-free in metadata dst teardown |
| CVE-2026-53266 | 8.8 HIGH | netfilter: bridge: make ebt_snat ARP rewrite writable |
| CVE-2026-53275 | 8.8 HIGH | ipv6: mcast: Fix use-after-free when processing MLD queries |
| CVE-2026-53240 | 8.8 HIGH | xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload |
| CVE-2026-53232 | 8.8 HIGH | net: phy: clean the sfp upstream if phy probing fails |
Showing top 20 of 146 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-53363
xfrm: iptfs: preserve shared-frag marker in iptfs_consume_fr - CVE-2026-53362
ipv6: account for fraggap on the paged allocation path - CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc(). - CVE-2026-53360
KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use - CVE-2026-53359
KVM: x86: Fix shadow paging use-after-free due to unexpected
Same vendor: Linux
- CVE-2026-53363
xfrm: iptfs: preserve shared-frag marker in iptfs_consume_fr - CVE-2026-53362
ipv6: account for fraggap on the paged allocation path - CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc(). - CVE-2026-53360
KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use - CVE-2026-53359
KVM: x86: Fix shadow paging use-after-free due to unexpected
V. Comments for CVE-2026-53132
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