Answer in brief
CVE-2026-43240 records a Medium severity (CVSS 5.5) vulnerability in x86/kexec: add a sanity check on previous kernel's ima kexec buffer. 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.
Answer in brief
CVE-2026-43240 records a Medium severity (CVSS 5.5) vulnerability in x86/kexec: add a sanity check on previous kernel's ima kexec buffer. 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 5.5. 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 | >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <37f18915a261afe84dab462624ed829cddb77a9b || >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <22e460b6333a5f818b042ac89201f8e735556f4a || >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <7e2476057950c174c7b2c2802246707bbfb497e4 || >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <f8f73bf0f8a57ee9b86792456bd42079bc98c6b7 || >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <d4a132f121c591b60dbaf57ea91f1faf11631fbc || >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <4d7a8f5f28187e3d2958b2a134473da2665207e7 || >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <c5489d04337b47e93c0623e8145fcba3f5739efd | 37f18915a261afe84dab462624ed829cddb77a9b, 22e460b6333a5f818b042ac89201f8e735556f4a, 7e2476057950c174c7b2c2802246707bbfb497e4, f8f73bf0f8a57ee9b86792456bd42079bc98c6b7, d4a132f121c591b60dbaf57ea91f1faf11631fbc, 4d7a8f5f28187e3d2958b2a134473da2665207e7, c5489d04337b47e93c0623e8145fcba3f5739efd |
| Linux/Linuxgeneric | 6.0 | Not reported |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
In the Linux kernel, the following vulnerability has been resolved: x86/kexec: add a sanity check on previous kernel's ima kexec buffer When the second-stage kernel is booted via kexec with a limiting command line such as "mem=<size>", the physical range that contains the carried over IMA measurement list may fall outside the truncated RAM leading to a kernel panic. BUG: unable to handle page fault for address: ffff97793ff47000 RIP: ima_restore_measurement_list+0xdc/0x45a #PF: error_code(0x0000) – not-present page Other architectures already validate the range with page_is_ram(), as done in commit cbf9c4b9617b ("of: check previous kernel's ima-kexec-buffer against memory bounds") do a similar check on x86. Without carrying the measurement list across kexec, the attestation would fail.
Quoted source text, attributed separately from HOL analysis.
CVSS is 5.5. 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 | >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <37f18915a261afe84dab462624ed829cddb77a9b || >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <22e460b6333a5f818b042ac89201f8e735556f4a || >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <7e2476057950c174c7b2c2802246707bbfb497e4 || >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <f8f73bf0f8a57ee9b86792456bd42079bc98c6b7 || >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <d4a132f121c591b60dbaf57ea91f1faf11631fbc || >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <4d7a8f5f28187e3d2958b2a134473da2665207e7 || >=b69a2afd5afce9bf6d56e349d6ab592c916e20f2 <c5489d04337b47e93c0623e8145fcba3f5739efd | 37f18915a261afe84dab462624ed829cddb77a9b, 22e460b6333a5f818b042ac89201f8e735556f4a, 7e2476057950c174c7b2c2802246707bbfb497e4, f8f73bf0f8a57ee9b86792456bd42079bc98c6b7, d4a132f121c591b60dbaf57ea91f1faf11631fbc, 4d7a8f5f28187e3d2958b2a134473da2665207e7, c5489d04337b47e93c0623e8145fcba3f5739efd |
| Linux/Linuxgeneric | 6.0 | Not reported |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
In the Linux kernel, the following vulnerability has been resolved: x86/kexec: add a sanity check on previous kernel's ima kexec buffer When the second-stage kernel is booted via kexec with a limiting command line such as "mem=<size>", the physical range that contains the carried over IMA measurement list may fall outside the truncated RAM leading to a kernel panic. BUG: unable to handle page fault for address: ffff97793ff47000 RIP: ima_restore_measurement_list+0xdc/0x45a #PF: error_code(0x0000) – not-present page Other architectures already validate the range with page_is_ram(), as done in commit cbf9c4b9617b ("of: check previous kernel's ima-kexec-buffer against memory bounds") do a similar check on x86. Without carrying the measurement list across kexec, the attestation would fail.
Quoted source text, attributed separately from HOL analysis.