Answer in brief
CVE-2024-45016 records a Unknown severity vulnerability in netem: fix return value if duplicate enqueue fails. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (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-2024-45016 records a Unknown severity vulnerability in netem: fix return value if duplicate enqueue fails. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (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), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <759e3e8c4a6a6b4e52ebc4547123a457f0ce90d4 || >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <c414000da1c2ea1ba9a5e5bb1a4ba774e51e202d || >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <52d99a69f3d556c6426048c9d481b912205919d8 || >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <0486d31dd8198e22b63a4730244b38fffce6d469 || >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <577d6c0619467fe90f7e8e57e45cb5bd9d936014 || >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <e5bb2988a310667abed66c7d3ffa28880cf0f883 || >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <c07ff8592d57ed258afee5a5e04991a48dbaf382 || a550a01b8af856f2684b0f79d552f5119eb5006c || 009510a90e230bb495f3fe25c7db956679263b07 || 4de7d30668cb8b06330992e1cd336f91700a2ce7 || d1dd2e15c85e890a1cc9bde5ba07ae63331e5c73 || 0148fe458b5705e2fea7cb88294fed7e36066ca2 || >=3.16.66 <3.17 || >=4.9.163 <4.10 || >=4.14.106 <4.15 || >=4.19.28 <4.20 || >=4.20.15 <4.21 | 759e3e8c4a6a6b4e52ebc4547123a457f0ce90d4, c414000da1c2ea1ba9a5e5bb1a4ba774e51e202d, 52d99a69f3d556c6426048c9d481b912205919d8, 0486d31dd8198e22b63a4730244b38fffce6d469, 577d6c0619467fe90f7e8e57e45cb5bd9d936014, e5bb2988a310667abed66c7d3ffa28880cf0f883, c07ff8592d57ed258afee5a5e04991a48dbaf382, 3.17, 4.10, 4.15, 4.20, 4.21 |
| Linux/Linuxgeneric | 5.0 | Not reported |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
Sep 11, 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: netem: fix return value if duplicate enqueue fails There is a bug in netem_enqueue() introduced by commit 5845f706388a ("net: netem: fix skb length BUG_ON in __skb_to_sgvec") that can lead to a use-after-free. This commit made netem_enqueue() always return NET_XMIT_SUCCESS when a packet is duplicated, which can cause the parent qdisc's q.qlen to be mistakenly incremented. When this happens qlen_notify() may be skipped on the parent during destruction, leaving a dangling pointer for some classful qdiscs like DRR. There are two ways for the bug happen: - If the duplicated packet is dropped by rootq->enqueue() and then the original packet is also dropped. - If rootq->enqueue() sends the duplicated packet to a different qdisc and the original packet is dropped. In both cases NET_XMIT_SUCCESS is returned even though no packets are enqueued at the netem qdisc. The fix is to defer the enqueue of the duplicate packet until after the original packet has been guaranteed to return NET_XMIT_SUCCESS.
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), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <759e3e8c4a6a6b4e52ebc4547123a457f0ce90d4 || >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <c414000da1c2ea1ba9a5e5bb1a4ba774e51e202d || >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <52d99a69f3d556c6426048c9d481b912205919d8 || >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <0486d31dd8198e22b63a4730244b38fffce6d469 || >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <577d6c0619467fe90f7e8e57e45cb5bd9d936014 || >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <e5bb2988a310667abed66c7d3ffa28880cf0f883 || >=5845f706388a4cde0f6b80f9e5d33527e942b7d9 <c07ff8592d57ed258afee5a5e04991a48dbaf382 || a550a01b8af856f2684b0f79d552f5119eb5006c || 009510a90e230bb495f3fe25c7db956679263b07 || 4de7d30668cb8b06330992e1cd336f91700a2ce7 || d1dd2e15c85e890a1cc9bde5ba07ae63331e5c73 || 0148fe458b5705e2fea7cb88294fed7e36066ca2 || >=3.16.66 <3.17 || >=4.9.163 <4.10 || >=4.14.106 <4.15 || >=4.19.28 <4.20 || >=4.20.15 <4.21 | 759e3e8c4a6a6b4e52ebc4547123a457f0ce90d4, c414000da1c2ea1ba9a5e5bb1a4ba774e51e202d, 52d99a69f3d556c6426048c9d481b912205919d8, 0486d31dd8198e22b63a4730244b38fffce6d469, 577d6c0619467fe90f7e8e57e45cb5bd9d936014, e5bb2988a310667abed66c7d3ffa28880cf0f883, c07ff8592d57ed258afee5a5e04991a48dbaf382, 3.17, 4.10, 4.15, 4.20, 4.21 |
| Linux/Linuxgeneric | 5.0 | Not reported |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
Sep 11, 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: netem: fix return value if duplicate enqueue fails There is a bug in netem_enqueue() introduced by commit 5845f706388a ("net: netem: fix skb length BUG_ON in __skb_to_sgvec") that can lead to a use-after-free. This commit made netem_enqueue() always return NET_XMIT_SUCCESS when a packet is duplicated, which can cause the parent qdisc's q.qlen to be mistakenly incremented. When this happens qlen_notify() may be skipped on the parent during destruction, leaving a dangling pointer for some classful qdiscs like DRR. There are two ways for the bug happen: - If the duplicated packet is dropped by rootq->enqueue() and then the original packet is also dropped. - If rootq->enqueue() sends the duplicated packet to a different qdisc and the original packet is dropped. In both cases NET_XMIT_SUCCESS is returned even though no packets are enqueued at the netem qdisc. The fix is to defer the enqueue of the duplicate packet until after the original packet has been guaranteed to return NET_XMIT_SUCCESS.
Quoted source text, attributed separately from HOL analysis.