Answer in brief
CVE-2022-50865 records a High severity (CVSS 7.5) vulnerability in tcp: fix a signed-integer-overflow bug in tcp_add_backlog(). 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.
CVSS is 7.5. 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 | >=c9c3321257e1b95be9b375f811fb250162af8d39 <9d04b4d0feee12bce6bfe37f30d8e953d3c30368 || >=c9c3321257e1b95be9b375f811fb250162af8d39 <4f23cb2be530785db284a685d1b1c30224d8a538 || >=c9c3321257e1b95be9b375f811fb250162af8d39 <a85d39f14aa8a71e29cfb5eb5de02878a8779898 || >=c9c3321257e1b95be9b375f811fb250162af8d39 <28addf029417d53b1df062b4c87feb7bc033cb5f || >=c9c3321257e1b95be9b375f811fb250162af8d39 <ec791d8149ff60c40ad2074af3b92a39c916a03f | 9d04b4d0feee12bce6bfe37f30d8e953d3c30368, 4f23cb2be530785db284a685d1b1c30224d8a538, a85d39f14aa8a71e29cfb5eb5de02878a8779898, 28addf029417d53b1df062b4c87feb7bc033cb5f, ec791d8149ff60c40ad2074af3b92a39c916a03f |
| Linux/Linuxgeneric | 4.9 | Not reported |
Published upstream
Dec 30, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: tcp: fix a signed-integer-overflow bug in tcp_add_backlog() The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and in tcp_add_backlog(), the variable limit is caculated by adding sk_rcvbuf, sk_sndbuf and 64 * 1024, it may exceed the max value of int and overflow. This patch reduces the limit budget by halving the sndbuf to solve this issue since ACK packets are much smaller than the payload.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2022-50865 records a High severity (CVSS 7.5) vulnerability in tcp: fix a signed-integer-overflow bug in tcp_add_backlog(). 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.
CVSS is 7.5. 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 | >=c9c3321257e1b95be9b375f811fb250162af8d39 <9d04b4d0feee12bce6bfe37f30d8e953d3c30368 || >=c9c3321257e1b95be9b375f811fb250162af8d39 <4f23cb2be530785db284a685d1b1c30224d8a538 || >=c9c3321257e1b95be9b375f811fb250162af8d39 <a85d39f14aa8a71e29cfb5eb5de02878a8779898 || >=c9c3321257e1b95be9b375f811fb250162af8d39 <28addf029417d53b1df062b4c87feb7bc033cb5f || >=c9c3321257e1b95be9b375f811fb250162af8d39 <ec791d8149ff60c40ad2074af3b92a39c916a03f | 9d04b4d0feee12bce6bfe37f30d8e953d3c30368, 4f23cb2be530785db284a685d1b1c30224d8a538, a85d39f14aa8a71e29cfb5eb5de02878a8779898, 28addf029417d53b1df062b4c87feb7bc033cb5f, ec791d8149ff60c40ad2074af3b92a39c916a03f |
| Linux/Linuxgeneric | 4.9 | Not reported |
Published upstream
Dec 30, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: tcp: fix a signed-integer-overflow bug in tcp_add_backlog() The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and in tcp_add_backlog(), the variable limit is caculated by adding sk_rcvbuf, sk_sndbuf and 64 * 1024, it may exceed the max value of int and overflow. This patch reduces the limit budget by halving the sndbuf to solve this issue since ACK packets are much smaller than the payload.
Quoted source text, attributed separately from HOL analysis.