CVE-2026-53248— net: airoha: Fix use-after-free in metadata dst teardown
Possible ATT&CK Techniques 1AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | af3cf757d5c99011b9b94ea8d78aeaccc0153fdc< 6f829e2c17a53a35321268339cd252aff6d6d723 | affected |
af3cf757d5c99011b9b94ea8d78aeaccc0153fdc< 4b5a574e033e66d2131eff1c18feef8d8643c67e | affected | ||
af3cf757d5c99011b9b94ea8d78aeaccc0153fdc< b38cae85d1c45ff189d7ecb6ac36f41cdc3d84d0 | affected | ||
6.15 | affected | ||
< 6.15 | unaffected | ||
6.18.36≤ 6.18.* | unaffected | ||
7.0.13≤ 7.0.* | unaffected | ||
7.1≤ * | unaffected |
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I. Basic Information for CVE-2026-53248
Vulnerability Information
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Vulnerability Title
net: airoha: Fix use-after-free in metadata dst teardown
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: airoha: Fix use-after-free in metadata dst teardown airoha_metadata_dst_free() runs metadata_dst_free() which frees the metadata_dst with kfree() immediately, bypassing the RCU grace period. In the RX path, skb_dst_set_noref() sets a non-refcounted pointer from the skb to the metadata_dst. This function requires RCU read-side protection and the dst must remain valid until all RCU readers complete. Since metadata_dst_free() calls kfree() directly, an use-after-free can occur if any skb still holds a noref pointer to the dst when the driver tears it down. Replace metadata_dst_free() with dst_release() which properly goes through the refcount path: when the refcount drops to zero, it schedules the actual free via call_rcu_hurry(), ensuring all RCU readers have completed before the memory is freed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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metadata dst拆除过程中释放后重用，可能导致在RX路径中skb仍持有noref指针时发生释放后重用。以下版本受到影响：6.15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-2026-53248
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|---|
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Patches & Fixes for CVE-2026-53248 (3)
Same Patch Batch · Linux · 2026-06-25 · 146 CVEs total
| CVE-2026-53175 | 9.8 CRITICAL | inet: frags: fix use-after-free caused by the fqdir_pre_exit() flush |
| CVE-2026-53176 | 9.8 CRITICAL | IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN |
| CVE-2026-53228 | 9.8 CRITICAL | ipv6: sit: reload inner IPv6 header after GSO offloads |
| CVE-2026-53221 | 9.8 CRITICAL | ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup() |
| 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-2026-53216 | 9.8 CRITICAL | net: mvpp2: limit XDP frame size to the RX buffer |
| CVE-2026-53215 | 9.8 CRITICAL | net: mvpp2: refill RX buffers before XDP or skb use |
| CVE-2026-53131 | 9.4 CRITICAL | netfilter: require Ethernet MAC header before using eth_hdr() |
| CVE-2026-53225 | 9.1 CRITICAL | sctp: fix uninit-value in __sctp_rcv_asconf_lookup() |
| CVE-2026-53224 | 9.1 CRITICAL | sctp: validate embedded INIT chunk and address list lengths in cookie |
| CVE-2026-53186 | 9.1 CRITICAL | RDMA/srp: bound SRP_RSP sense copy by the received length |
| CVE-2026-53275 | 8.8 HIGH | ipv6: mcast: Fix use-after-free when processing MLD queries |
| CVE-2026-53198 | 8.8 HIGH | ksmbd: fix use-after-free of a deferred file_lock on double SMB2_CANCEL |
| CVE-2026-53159 | 8.8 HIGH | misc: fastrpc: fix DMA address corruption due to find_vma misuse |
| CVE-2026-53240 | 8.8 HIGH | xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload |
| CVE-2026-53188 | 8.8 HIGH | RDMA/core: Validate the passed in fops for ib_get_ucaps() |
| CVE-2026-53171 | 8.8 HIGH | accel/ethosu: fix arithmetic issues in dma_length() |
Showing top 20 of 146 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-68480
x86/bugs: Make Safe-RET robust against interrupt injection - CVE-2026-64604
KVM: VMX: Grab vmcs12 on CR8 interception update iff vCPU is - CVE-2026-64602
iio: adc: spear: Initialize completion before requesting IRQ - CVE-2026-64603
platform/x86: intel-hid: Protect ACPI notify handler against - CVE-2026-64601
ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_
Same vendor: Linux
- CVE-2026-68480
x86/bugs: Make Safe-RET robust against interrupt injection - CVE-2026-64604
KVM: VMX: Grab vmcs12 on CR8 interception update iff vCPU is - CVE-2026-64602
iio: adc: spear: Initialize completion before requesting IRQ - CVE-2026-64603
platform/x86: intel-hid: Protect ACPI notify handler against - CVE-2026-64601
ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_
V. Comments for CVE-2026-53248
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