Answer in brief
CVE-2023-52872 records a High severity (CVSS 7.8) vulnerability in tty: n_gsm: fix race condition in status line change on dead connections. 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 7.8. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=dd37f657387853623f20c1b2482afbb9cd8ece33 <81a4dd5e6c78f5d8952fa8c9d36565db1fe01444 || >=c568f7086c6e771c77aad13d727c70ef70e07243 <df6cfab66ff2a44bd23ad5dd5309cb3421bb6593 || >=c568f7086c6e771c77aad13d727c70ef70e07243 <19d34b73234af542cc8a218cf398dee73cdb1890 || >=c568f7086c6e771c77aad13d727c70ef70e07243 <ce4df90333c4fe65acb8b5089fdfe9b955ce976a || >=c568f7086c6e771c77aad13d727c70ef70e07243 <3a75b205de43365f80a33b98ec9289785da56243 || d834aba5f30d9a6f98f4ca1eb07e501f1989331c || 692e847a8e6607909c4a3f98ab16ccee7849bd11 || >=5.15.61 <5.15.138 || >=5.18.18 <5.19 || >=5.19.2 <5.20 | 81a4dd5e6c78f5d8952fa8c9d36565db1fe01444, df6cfab66ff2a44bd23ad5dd5309cb3421bb6593, 19d34b73234af542cc8a218cf398dee73cdb1890, ce4df90333c4fe65acb8b5089fdfe9b955ce976a, 3a75b205de43365f80a33b98ec9289785da56243, 5.15.138, 5.19, 5.20 |
| Linux/Linuxgeneric | 6.0 | Not reported |
Published upstream
May 21, 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 4, 2026
In the Linux kernel, the following vulnerability has been resolved: tty: n_gsm: fix race condition in status line change on dead connections gsm_cleanup_mux() cleans up the gsm by closing all DLCIs, stopping all timers, removing the virtual tty devices and clearing the data queues. This procedure, however, may cause subsequent changes of the virtual modem status lines of a DLCI. More data is being added the outgoing data queue and the deleted kick timer is restarted to handle this. At this point many resources have already been removed by the cleanup procedure. Thus, a kernel panic occurs. Fix this by proving in gsm_modem_update() that the cleanup procedure has not been started and the mux is still alive. Note that writing to a virtual tty is already protected by checks against the DLCI specific connection state.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2023-52872 records a High severity (CVSS 7.8) vulnerability in tty: n_gsm: fix race condition in status line change on dead connections. 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 7.8. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=dd37f657387853623f20c1b2482afbb9cd8ece33 <81a4dd5e6c78f5d8952fa8c9d36565db1fe01444 || >=c568f7086c6e771c77aad13d727c70ef70e07243 <df6cfab66ff2a44bd23ad5dd5309cb3421bb6593 || >=c568f7086c6e771c77aad13d727c70ef70e07243 <19d34b73234af542cc8a218cf398dee73cdb1890 || >=c568f7086c6e771c77aad13d727c70ef70e07243 <ce4df90333c4fe65acb8b5089fdfe9b955ce976a || >=c568f7086c6e771c77aad13d727c70ef70e07243 <3a75b205de43365f80a33b98ec9289785da56243 || d834aba5f30d9a6f98f4ca1eb07e501f1989331c || 692e847a8e6607909c4a3f98ab16ccee7849bd11 || >=5.15.61 <5.15.138 || >=5.18.18 <5.19 || >=5.19.2 <5.20 | 81a4dd5e6c78f5d8952fa8c9d36565db1fe01444, df6cfab66ff2a44bd23ad5dd5309cb3421bb6593, 19d34b73234af542cc8a218cf398dee73cdb1890, ce4df90333c4fe65acb8b5089fdfe9b955ce976a, 3a75b205de43365f80a33b98ec9289785da56243, 5.15.138, 5.19, 5.20 |
| Linux/Linuxgeneric | 6.0 | Not reported |
Published upstream
May 21, 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 4, 2026
In the Linux kernel, the following vulnerability has been resolved: tty: n_gsm: fix race condition in status line change on dead connections gsm_cleanup_mux() cleans up the gsm by closing all DLCIs, stopping all timers, removing the virtual tty devices and clearing the data queues. This procedure, however, may cause subsequent changes of the virtual modem status lines of a DLCI. More data is being added the outgoing data queue and the deleted kick timer is restarted to handle this. At this point many resources have already been removed by the cleanup procedure. Thus, a kernel panic occurs. Fix this by proving in gsm_modem_update() that the cleanup procedure has not been started and the mux is still alive. Note that writing to a virtual tty is already protected by checks against the DLCI specific connection state.
Quoted source text, attributed separately from HOL analysis.