Answer in brief
CVE-2024-38558 records a Critical severity (CVSS 10.0) vulnerability in net: openvswitch: fix overwriting ct original tuple for ICMPv6. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XCM-/XRM-/XCH-/XRH-300 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 10.0. 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/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XCM-/XRM-/XCH-/XRH-300 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=9dd7f8907c3705dc7a7a375d1c6e30b06e6daffc <6a51ac92bf35d34b4996d6eb67e2fe469f573b11 || >=9dd7f8907c3705dc7a7a375d1c6e30b06e6daffc <0b532f59437f688563e9c58bdc1436fefa46e3b5 || >=9dd7f8907c3705dc7a7a375d1c6e30b06e6daffc <5ab6aecbede080b44b8e34720ab72050bf1e6982 || >=9dd7f8907c3705dc7a7a375d1c6e30b06e6daffc <483eb70f441e2df66ade78aa7217e6e4caadfef3 || >=9dd7f8907c3705dc7a7a375d1c6e30b06e6daffc <9ec8b0ccadb908d92f7ee211a4eff05fd932f3f6 || >=9dd7f8907c3705dc7a7a375d1c6e30b06e6daffc <78741b4caae1e880368cb2f5110635f3ce45ecfd || >=9dd7f8907c3705dc7a7a375d1c6e30b06e6daffc <431e9215576d7b728f3f53a704d237a520092120 || >=9dd7f8907c3705dc7a7a375d1c6e30b06e6daffc <d73fb8bddf89503c9fae7c42e50d44c89909aad6 || >=9dd7f8907c3705dc7a7a375d1c6e30b06e6daffc <7c988176b6c16c516474f6fceebe0f055af5eb56 | 6a51ac92bf35d34b4996d6eb67e2fe469f573b11, 0b532f59437f688563e9c58bdc1436fefa46e3b5, 5ab6aecbede080b44b8e34720ab72050bf1e6982, 483eb70f441e2df66ade78aa7217e6e4caadfef3, 9ec8b0ccadb908d92f7ee211a4eff05fd932f3f6, 78741b4caae1e880368cb2f5110635f3ce45ecfd, 431e9215576d7b728f3f53a704d237a520092120, d73fb8bddf89503c9fae7c42e50d44c89909aad6, 7c988176b6c16c516474f6fceebe0f055af5eb56 |
| Linux/Linuxgeneric | 4.11 | Not reported |
| Siemens/RUGGEDCOM RST2428Pgeneric | >=0 <V3.1 | V3.1 |
| Siemens/SCALANCE XCM-/XRM-/XCH-/XRH-300 familygeneric | >=0 <V3.1 | V3.1 |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <V1.1.1 | V1.1.1 |
Published upstream
Jun 19, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 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: net: openvswitch: fix overwriting ct original tuple for ICMPv6 OVS_PACKET_CMD_EXECUTE has 3 main attributes: - OVS_PACKET_ATTR_KEY - Packet metadata in a netlink format. - OVS_PACKET_ATTR_PACKET - Binary packet content. - OVS_PACKET_ATTR_ACTIONS - Actions to execute on the packet. OVS_PACKET_ATTR_KEY is parsed first to populate sw_flow_key structure with the metadata like conntrack state, input port, recirculation id, etc. Then the packet itself gets parsed to populate the rest of the keys from the packet headers. Whenever the packet parsing code starts parsing the ICMPv6 header, it first zeroes out fields in the key corresponding to Neighbor Discovery information even if it is not an ND packet. It is an 'ipv6.nd' field. However, the 'ipv6' is a union that shares the space between 'nd' and 'ct_orig' that holds the original tuple conntrack metadata parsed from the OVS_PACKET_ATTR_KEY. ND packets should not normally have conntrack state, so it's fine to share the space, but normal ICMPv6 Echo packets or maybe other types of ICMPv6 can have the state attached and it should not be overwritten. The issue results in all but the last 4 bytes of the destination address being wiped from the original conntrack tuple leading to incorrect packet matching and potentially executing wrong actions in case this packet recirculates within the datapath or goes back to userspace. ND fields should not be accessed in non-ND packets, so not clearing them should be fine. Executing memset() only for actual ND packets to avoid the issue. Initializing the whole thing before parsing is needed because ND packet may not contain all the options. The issue only affects the OVS_PACKET_CMD_EXECUTE path and doesn't affect packets entering OVS datapath from network interfaces, because in this case CT metadata is populated from skb after the packet is already parsed.
Quoted source text, attributed separately from HOL analysis.