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CVE-2026-80706— can: softing: fw_parse(): validate firmware record spans

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基金会开源的一个操作系统内核。 Linux kernel 2.6.38版本存在安全漏洞，该漏洞源于can softing驱动中的fw_parse()函数解析固件记录时未验证记录边界，可能导致越界读取或越界写入。

CVSS 7.8 · High EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c< f6d9a6a9512430b395a1940d7b216394fd02d30b affected
03fd3cf5a179da12e6bee5e9d74b648aff68dc4c< 84c850b08fc0d671c245144b619683129b55690a affected
03fd3cf5a179da12e6bee5e9d74b648aff68dc4c< d0eac0ea7cf493e787fd7b4a556e43ef03cb4b50 affected
03fd3cf5a179da12e6bee5e9d74b648aff68dc4c< ae588e5b9cc268de1aabf30f939f0870717ca164 affected
03fd3cf5a179da12e6bee5e9d74b648aff68dc4c< ad331e26fd213a19fee0de18cdacd67b7ff5b478 affected
03fd3cf5a179da12e6bee5e9d74b648aff68dc4c< 2ee477e541a6d5e434d6a4041c6b677ab42e1d82 affected
03fd3cf5a179da12e6bee5e9d74b648aff68dc4c< 808ed899dcf8bdef66894fda5eb7ee4bb0eb8dc1 affected
03fd3cf5a179da12e6bee5e9d74b648aff68dc4c< 856d6cb04e5407523566b075841dcd6423757d1c affected
… +10 more rows
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I. Basic Information for CVE-2026-80706

Vulnerability Information
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Vulnerability Title
can: softing: fw_parse(): validate firmware record spans
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: can: softing: fw_parse(): validate firmware record spans fw_parse() reads a fixed record header, a firmware-provided payload, and a trailing checksum without knowing the end of the firmware blob. A truncated record can therefore make those reads exceed the blob. The same record also supplies addresses and lengths for writes into DPRAM. The generic loader uses wrap-prone mixed signed arithmetic for its bounds check, while the application loader does not bound the staging copy at all. Pass the firmware end to the parser and validate the full source record. Use a signed wide offset for generic DPRAM records and validate the application staging span against the mapped DPRAM before copying.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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基金会开源的一个操作系统内核。 Linux kernel 2.6.38版本存在安全漏洞，该漏洞源于can softing驱动中的fw_parse()函数解析固件记录时未验证记录边界，可能导致越界读取或越界写入。
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 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c ~ f6d9a6a9512430b395a1940d7b216394fd02d30b -
Linux Linux 2.6.38 -

II. Public POCs for CVE-2026-80706

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III. Intelligence Information for CVE-2026-80706

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Patches & Fixes for CVE-2026-80706 (8)

Same Patch Batch · Linux · 2026-08-28 · 135 CVEs total

CVE-2026-80634 9.8 CRITICAL netfilter: flowtable: avoid num_encaps underflow on bridge VLAN untag
CVE-2026-80694 9.8 CRITICAL net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller
CVE-2026-80681 9.8 CRITICAL vxlan: re-fetch eth header after route_shortcircuit()
CVE-2026-80674 9.8 CRITICAL ntfs: validate resident attribute lists and harden the validator
CVE-2026-80673 9.8 CRITICAL ntfs: bound the look-ahead attribute-list entry in ntfs_external_attr_find()
CVE-2026-80668 9.8 CRITICAL netfilter: nf_conntrack_expect: use conntrack GC to reap expectations
CVE-2026-80630 9.8 CRITICAL net/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restorin
CVE-2026-80617 9.8 CRITICAL net: airoha: fix foe_check_time allocation size
CVE-2026-80612 9.8 CRITICAL net: lwtunnel: Drop skb metadata before LWT encapsulation
CVE-2026-80714 9.8 CRITICAL ipvs: do not propagate one-packet flag to synced conns
CVE-2026-80609 9.8 CRITICAL qede: fix out-of-bounds check for cqe->len_list[]
CVE-2026-80600 9.8 CRITICAL batman-adv: dat: acquire ARP hw source only after skb realloc
CVE-2026-80693 9.3 CRITICAL idpf: bound interrupt-vector register fill to the allocated array
CVE-2026-80684 9.3 CRITICAL KVM: s390: pci: Fix NULL dereference on AIBV allocation failure
CVE-2026-80671 9.3 CRITICAL perf sched: Fix register_pid() overflow, strcpy, and BUG_ON
CVE-2026-80603 9.1 CRITICAL netfilter: nf_conntrack_irc: fix parse_dcc() off-by-one OOB read
CVE-2026-80670 9.1 CRITICAL perf tools: Use perf_env__get_cpu_topology() in machine__resolve()
CVE-2026-80721 8.8 HIGH Bluetooth: ISO: ensure no dangling hcon references in iso_conn
CVE-2026-80722 8.8 HIGH wifi: mac80211: validate individual TWT params before driver setup
CVE-2026-80724 8.8 HIGH ptp: vmclock: prevent read-only mappings from becoming writable

Showing top 20 of 135 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80706

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