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CVE-2026-68313— tipc: fix infinite loop in __tipc_nl_compat_dumpit

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存在安全漏洞，该漏洞源于cmd->dumpit回调返回负错误码，导致while(len)循环无限循环且无法释放genl_mutex，可能导致拒绝服务。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.22% · P11

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux d0796d1ef63deb38147729664691ba3090930b26< 2a1c1397275f27e33b6a2a565d81cfef0deb6656 affected
d0796d1ef63deb38147729664691ba3090930b26< 98d09766cee3182aae292886e2fef0cbe8dba537 affected
d0796d1ef63deb38147729664691ba3090930b26< 9cd8c88e1336ec0fbe02af1ddf2b52838d30fae4 affected
d0796d1ef63deb38147729664691ba3090930b26< f9c669d9f4cac832fe31193cdbc24c6a9d99398b affected
d0796d1ef63deb38147729664691ba3090930b26< 1ab78af2140189b735b8d3b889b0284128cb2013 affected
d0796d1ef63deb38147729664691ba3090930b26< e740e90ca8e7f70d9eac1aa31a8b3e0e4d32b2ef affected
d0796d1ef63deb38147729664691ba3090930b26< b8f3b8efa5f99081b14de1a7ffa68a81bf01bd48 affected
d0796d1ef63deb38147729664691ba3090930b26< 22f8aa35964e8f2ab026578f45befc9605fd1b28 affected
… +10 more rows
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I. Basic Information for CVE-2026-68313

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
tipc: fix infinite loop in __tipc_nl_compat_dumpit
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tipc: fix infinite loop in __tipc_nl_compat_dumpit cmd->dumpit callback can return a negative errno, causing an infinite loop due to the while(len) condition. As the loop never terminates, genl_mutex is never released, and other tasks waiting on it starve in D state. Check dumpit's return value, propagate it and jump to err_out on error.
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
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存在安全漏洞，该漏洞源于cmd->dumpit回调返回负错误码，导致while(len)循环无限循环且无法释放genl_mutex，可能导致拒绝服务。
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 d0796d1ef63deb38147729664691ba3090930b26 ~ 2a1c1397275f27e33b6a2a565d81cfef0deb6656 -
Linux Linux 4.0 -

II. Public POCs for CVE-2026-68313

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III. Intelligence Information for CVE-2026-68313

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Patches & Fixes for CVE-2026-68313 (7)

Same Patch Batch · Linux · 2026-08-10 · 344 CVEs total

CVE-2026-68137 9.8 CRITICAL net/x25: fix use-after-free in x25_kill_by_neigh()
CVE-2026-68300 9.8 CRITICAL sctp: auth: verify auth requirement when auth_chunk is NULL
CVE-2026-68154 9.8 CRITICAL libceph: reject zero bucket types in crush_decode
CVE-2026-68156 9.8 CRITICAL libceph: refresh auth->authorizer_buf{,_len} after authorizer update
CVE-2026-68158 9.8 CRITICAL libceph: Fix multiplication overflow in decode_new_up_state_weight()
CVE-2026-68159 9.8 CRITICAL libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE
CVE-2026-68160 9.8 CRITICAL ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()
CVE-2026-68161 9.8 CRITICAL sctp: close UDP tunnel sockets during netns teardown
CVE-2026-68144 9.8 CRITICAL phonet: pep: fix use-after-free in pep_get_sb()
CVE-2026-68170 9.8 CRITICAL mptcp: fix stale skb->sk reference on subflow close
CVE-2026-68302 9.8 CRITICAL amt: re-read skb header pointers after every pull
CVE-2026-68136 9.8 CRITICAL net: gro: fix double aggregation of flush-marked skbs
CVE-2026-68117 9.8 CRITICAL tipc: clear sock->sk on the failed-insert path in tipc_sk_create()
CVE-2026-68123 9.8 CRITICAL openvswitch: fix GSO userspace truncation underflow
CVE-2026-68426 9.8 CRITICAL xfrm: fix stale skb->prev after async crypto steals a GSO segment
CVE-2026-68127 9.8 CRITICAL ila: reload IPv6 header after pskb_may_pull in checksum adjust
CVE-2026-68388 9.8 CRITICAL smb/client: handle overlapping allocated ranges in fallocate
CVE-2026-68385 9.8 CRITICAL s390/checksum: Fix csum_partial() without vector facility
CVE-2026-68381 9.8 CRITICAL ksmbd: pin conn during async oplock break notification
CVE-2026-68124 9.6 CRITICAL mctp: serial: handle zero-length frames to prevent rx buffer overflow

Showing top 20 of 344 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-68313

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