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CVE-2026-98597— net: usb: sr9700: include receive overhead in the length check

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.

在 Linux 内核中，以下漏洞已得到修复： 网络子系统：USB：sr9700：在长度检查中包含接收开销 接收修复逻辑会从报告的报文长度中减去以太网 CRC，但却将该有效载荷长度与整个剩余接收缓冲区进行比较。随后的复制操作始于三字节报头之后，而游标推进过程会同时消耗该报头和四字节 CRC。 修复方案要求：在复制有效载荷或推进到下一个报文之前，必须确保有效载荷在扣除 后能够容纳。由于循环本身已确保剩余缓冲区大于该开销，因此执行减法操作是安全的。 该问题由我们的静态分析工具发现。

AI Predicted 7.8 Difficulty: Hard

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c9b37458e95629b1d1171457afdcc1bf1eb7881d< 92d88c88390fc62444c00a1a22078f838e03891f affected
c9b37458e95629b1d1171457afdcc1bf1eb7881d< baf07d5153d3af8f98e65e2d3566bc0d50c4e3ac affected
c9b37458e95629b1d1171457afdcc1bf1eb7881d< 8488779d9bddbdb33588c9fc2c0657a3da773f61 affected
c9b37458e95629b1d1171457afdcc1bf1eb7881d< e1f5b74edccf4c9b671b6bce4435a98746fe5167 affected
c9b37458e95629b1d1171457afdcc1bf1eb7881d< 9b59b00890c5dea355b4cc8795ab8eeafc044e48 affected
c9b37458e95629b1d1171457afdcc1bf1eb7881d< 6ab6c9d120b30c94579192ef83a581a3dda6d79c affected
c9b37458e95629b1d1171457afdcc1bf1eb7881d< 05b442709bd5256c6c0e11fe56b9a0cb2455c245 affected
c9b37458e95629b1d1171457afdcc1bf1eb7881d< c06bde80ae7a7b595732f7cabcb92cf08db9d56a affected
… +10 more rows
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I. Basic Information for CVE-2026-98597

Vulnerability Information
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Vulnerability Title
net: usb: sr9700: include receive overhead in the length check
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: usb: sr9700: include receive overhead in the length check The receive fixup subtracts the Ethernet CRC from the reported packet length, but compares that payload length against the whole remaining receive buffer. The following copy starts after the three-byte header, and the cursor advance consumes both that header and the four-byte CRC. Require the payload to fit after SR_RX_OVERHEAD before copying it or advancing to the next packet. The loop already ensures that the remaining buffer is larger than the overhead, so the subtraction is safe. The issue was found by our static-analysis tool.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux c9b37458e95629b1d1171457afdcc1bf1eb7881d ~ 92d88c88390fc62444c00a1a22078f838e03891f -
Linux Linux 3.12 -

II. Public POCs for CVE-2026-98597

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III. Intelligence Information for CVE-2026-98597

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Patches & Fixes for CVE-2026-98597 (8)

Same Patch Batch · Linux · 2026-10-18 · 436 CVEs total

CVE-2026-98582 nfc: st21nfca: validate received frame size
CVE-2026-98568 vxlan: use one headroom snapshot for neighbour replies
CVE-2026-98570 net: ipv6: keep room for the mac header in dst_dev_overhead()
CVE-2026-98571 net: stmmac: clear stale buf->page after recycling on skb build failure
CVE-2026-98572 bpf: Fix immediate JMP JEQ/JNE on MIPS32
CVE-2026-98573 net: skbuff: fix pull-bound underflow in skb_checksum_setup_ipv6()
CVE-2026-98574 net: bcmgenet: stop Tx NAPI before disabling the queues
CVE-2026-98575 nfc: pn533: fix OOB read in pn533_acr122_is_rx_frame_valid()
CVE-2026-98576 nfc: llcp: fix slab-out-of-bounds reads when logging service names
CVE-2026-98577 nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()
CVE-2026-98578 nfc: st21nfca: validate ISO15693 inventory length
CVE-2026-98579 nfc: llcp: fix sdreq TLV list leak on parse/alloc/send failure
CVE-2026-98580 nfc: llcp: Fix race condition in accept_queue lifecycle
CVE-2026-98581 nfc: llcp: Fix list corruption / refcount desync in nfc_llcp_recv_dm()
CVE-2026-98593 s390/debug: Fix NULL pointer dereference in debug_info_copy()
CVE-2026-98590 bpf: Fix bpf_sock context code generation
CVE-2026-98591 bpf: Fix bounds check for skb-backed dynptrs
CVE-2026-98592 net: spacemit: clear TX descriptor on fragment mapping failure
CVE-2026-98589 bpf: Reject pkt arguments in mutating subprogs
CVE-2026-98594 tg3: clean up PHYLIB resources on probe failure

Showing top 20 of 436 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98597

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