Answer in brief
CVE-2022-49989 records a Medium severity (CVSS 5.5) vulnerability in xen/privcmd: fix error exit of privcmd_ioctl_dm_op(). 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ab520be8cd5d56867fc95cfbc34b90880faf1f9d <6de50db104af0dc921f593fd95c55db86a52ceef || >=ab520be8cd5d56867fc95cfbc34b90880faf1f9d <c2b7bae7c90051fd6a679d5dee00400d67ebbf4a || >=ab520be8cd5d56867fc95cfbc34b90880faf1f9d <45d47bd9b96e7874b98dbcc7602fe2826c5d62a6 || >=ab520be8cd5d56867fc95cfbc34b90880faf1f9d <c5deb27895e017a0267de0a20d140ad5fcc55a54 | 6de50db104af0dc921f593fd95c55db86a52ceef, c2b7bae7c90051fd6a679d5dee00400d67ebbf4a, 45d47bd9b96e7874b98dbcc7602fe2826c5d62a6, c5deb27895e017a0267de0a20d140ad5fcc55a54 |
| Linux/Linuxgeneric | 4.11 | Not reported |
Published upstream
Jun 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: fix error exit of privcmd_ioctl_dm_op() The error exit of privcmd_ioctl_dm_op() is calling unlock_pages() potentially with pages being NULL, leading to a NULL dereference. Additionally lock_pages() doesn't check for pin_user_pages_fast() having been completely successful, resulting in potentially not locking all pages into memory. This could result in sporadic failures when using the related memory in user mode. Fix all of that by calling unlock_pages() always with the real number of pinned pages, which will be zero in case pages being NULL, and by checking the number of pages pinned by pin_user_pages_fast() matching the expected number of pages.
Quoted source text, attributed separately from HOL analysis.