Answer in brief
CVE-2024-40983 records a Unknown severity vulnerability in tipc: force a dst refcount before doing decryption. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2024-40983 records a Unknown severity vulnerability in tipc: force a dst refcount before doing decryption. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 <3eb1b39627892c4e26cb0162b75725aa5fcc60c8 || >=fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 <692803b39a36e63ac73208e0a3769ae6a2f9bc76 || >=fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 <623c90d86a61e3780f682b32928af469c66ec4c2 || >=fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 <b57a4a2dc8746cea58a922ebe31b6aa629d69d93 || >=fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 <6808b41371670c51feea14f63ade211e78100930 || >=fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 <2ebe8f840c7450ecbfca9d18ac92e9ce9155e269 | 3eb1b39627892c4e26cb0162b75725aa5fcc60c8, 692803b39a36e63ac73208e0a3769ae6a2f9bc76, 623c90d86a61e3780f682b32928af469c66ec4c2, b57a4a2dc8746cea58a922ebe31b6aa629d69d93, 6808b41371670c51feea14f63ade211e78100930, 2ebe8f840c7450ecbfca9d18ac92e9ce9155e269 |
| Linux/Linuxgeneric | 5.5 | Not reported |
Published upstream
Jul 12, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: tipc: force a dst refcount before doing decryption As it says in commit 3bc07321ccc2 ("xfrm: Force a dst refcount before entering the xfrm type handlers"): "Crypto requests might return asynchronous. In this case we leave the rcu protected region, so force a refcount on the skb's destination entry before we enter the xfrm type input/output handlers." On TIPC decryption path it has the same problem, and skb_dst_force() should be called before doing decryption to avoid a possible crash. Shuang reported this issue when this warning is triggered: [] WARNING: include/net/dst.h:337 tipc_sk_rcv+0x1055/0x1ea0 [tipc] [] Kdump: loaded Tainted: G W --------- - - 4.18.0-496.el8.x86_64+debug [] Workqueue: crypto cryptd_queue_worker [] RIP: 0010:tipc_sk_rcv+0x1055/0x1ea0 [tipc] [] Call Trace: [] tipc_sk_mcast_rcv+0x548/0xea0 [tipc] [] tipc_rcv+0xcf5/0x1060 [tipc] [] tipc_aead_decrypt_done+0x215/0x2e0 [tipc] [] cryptd_aead_crypt+0xdb/0x190 [] cryptd_queue_worker+0xed/0x190 [] process_one_work+0x93d/0x17e0
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 <3eb1b39627892c4e26cb0162b75725aa5fcc60c8 || >=fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 <692803b39a36e63ac73208e0a3769ae6a2f9bc76 || >=fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 <623c90d86a61e3780f682b32928af469c66ec4c2 || >=fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 <b57a4a2dc8746cea58a922ebe31b6aa629d69d93 || >=fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 <6808b41371670c51feea14f63ade211e78100930 || >=fc1b6d6de2208774efd2a20bf0daddb02d18b1e0 <2ebe8f840c7450ecbfca9d18ac92e9ce9155e269 | 3eb1b39627892c4e26cb0162b75725aa5fcc60c8, 692803b39a36e63ac73208e0a3769ae6a2f9bc76, 623c90d86a61e3780f682b32928af469c66ec4c2, b57a4a2dc8746cea58a922ebe31b6aa629d69d93, 6808b41371670c51feea14f63ade211e78100930, 2ebe8f840c7450ecbfca9d18ac92e9ce9155e269 |
| Linux/Linuxgeneric | 5.5 | Not reported |
Published upstream
Jul 12, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: tipc: force a dst refcount before doing decryption As it says in commit 3bc07321ccc2 ("xfrm: Force a dst refcount before entering the xfrm type handlers"): "Crypto requests might return asynchronous. In this case we leave the rcu protected region, so force a refcount on the skb's destination entry before we enter the xfrm type input/output handlers." On TIPC decryption path it has the same problem, and skb_dst_force() should be called before doing decryption to avoid a possible crash. Shuang reported this issue when this warning is triggered: [] WARNING: include/net/dst.h:337 tipc_sk_rcv+0x1055/0x1ea0 [tipc] [] Kdump: loaded Tainted: G W --------- - - 4.18.0-496.el8.x86_64+debug [] Workqueue: crypto cryptd_queue_worker [] RIP: 0010:tipc_sk_rcv+0x1055/0x1ea0 [tipc] [] Call Trace: [] tipc_sk_mcast_rcv+0x548/0xea0 [tipc] [] tipc_rcv+0xcf5/0x1060 [tipc] [] tipc_aead_decrypt_done+0x215/0x2e0 [tipc] [] cryptd_aead_crypt+0xdb/0x190 [] cryptd_queue_worker+0xed/0x190 [] process_one_work+0x93d/0x17e0
Quoted source text, attributed separately from HOL analysis.