Answer in brief
CVE-2026-43197 records a Critical severity (CVSS 9.1) vulnerability in netconsole: avoid OOB reads, msg is not nul-terminated. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), 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 9.1. 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), 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 |
| cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c62c0a17f9b7398022f9eebe547878033264f81f <3126a2f98beaec5a554a1fb31c46db1e8542665e || >=c62c0a17f9b7398022f9eebe547878033264f81f <74ab1456eaa3b2eb986138f9e1f4cb37e73b6f58 || >=c62c0a17f9b7398022f9eebe547878033264f81f <82aec772fca2223bc5774bd9af486fd95766e578 | 3126a2f98beaec5a554a1fb31c46db1e8542665e, 74ab1456eaa3b2eb986138f9e1f4cb37e73b6f58, 82aec772fca2223bc5774bd9af486fd95766e578 |
| Linux/Linuxgeneric | 6.6 | Not reported |
| Linux/Linuxgeneric | >=c62c0a17f9b7398022f9eebe547878033264f81f <8fe132c4873f9eb1b86ddbf31216e9d961a0b8b9 || >=c62c0a17f9b7398022f9eebe547878033264f81f <3126a2f98beaec5a554a1fb31c46db1e8542665e || >=c62c0a17f9b7398022f9eebe547878033264f81f <74ab1456eaa3b2eb986138f9e1f4cb37e73b6f58 || >=c62c0a17f9b7398022f9eebe547878033264f81f <82aec772fca2223bc5774bd9af486fd95766e578 | 8fe132c4873f9eb1b86ddbf31216e9d961a0b8b9, 3126a2f98beaec5a554a1fb31c46db1e8542665e, 74ab1456eaa3b2eb986138f9e1f4cb37e73b6f58, 82aec772fca2223bc5774bd9af486fd95766e578 |
| Linux/Linuxgeneric | >=c62c0a17f9b7398022f9eebe547878033264f81f <68fe91df6ea822dae772fceaad0686e4f5839aec || >=c62c0a17f9b7398022f9eebe547878033264f81f <8fe132c4873f9eb1b86ddbf31216e9d961a0b8b9 || >=c62c0a17f9b7398022f9eebe547878033264f81f <3126a2f98beaec5a554a1fb31c46db1e8542665e || >=c62c0a17f9b7398022f9eebe547878033264f81f <74ab1456eaa3b2eb986138f9e1f4cb37e73b6f58 || >=c62c0a17f9b7398022f9eebe547878033264f81f <82aec772fca2223bc5774bd9af486fd95766e578 | 68fe91df6ea822dae772fceaad0686e4f5839aec, 8fe132c4873f9eb1b86ddbf31216e9d961a0b8b9, 3126a2f98beaec5a554a1fb31c46db1e8542665e, 74ab1456eaa3b2eb986138f9e1f4cb37e73b6f58, 82aec772fca2223bc5774bd9af486fd95766e578 |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 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: netconsole: avoid OOB reads, msg is not nul-terminated msg passed to netconsole from the console subsystem is not guaranteed to be nul-terminated. Before recent commit 7eab73b18630 ("netconsole: convert to NBCON console infrastructure") the message would be placed in printk_shared_pbufs, a static global buffer, so KASAN had harder time catching OOB accesses. Now we see: printk: console [netcon_ext0] enabled BUG: KASAN: slab-out-of-bounds in string+0x1f7/0x240 Read of size 1 at addr ffff88813b6d4c00 by task pr/netcon_ext0/594 CPU: 65 UID: 0 PID: 594 Comm: pr/netcon_ext0 Not tainted 6.19.0-11754-g4246fd6547c9 Call Trace: kasan_report+0xe4/0x120 string+0x1f7/0x240 vsnprintf+0x655/0xba0 scnprintf+0xba/0x120 netconsole_write+0x3fe/0xa10 nbcon_emit_next_record+0x46e/0x860 nbcon_kthread_func+0x623/0x750 Allocated by task 1: nbcon_alloc+0x1ea/0x450 register_console+0x26b/0xe10 init_netconsole+0xbb0/0xda0 The buggy address belongs to the object at ffff88813b6d4000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 0 bytes to the right of allocated 3072-byte region [ffff88813b6d4000, ffff88813b6d4c00)
Quoted source text, attributed separately from HOL analysis.