Answer in brief
CVE-2026-43494 records a High severity (CVSS 7.8) vulnerability in net/rds: reset op_nents when zerocopy page pin fails. 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 |
| cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 <c6e51512a784c4a7b86e1a044988696e3b3721fa || >=0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 <03014551938a0887fa55f18ce49b70158a9c0113 || >=0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 <d84ce1786ce40fdd3dd98db47aec5527817e1ef6 || >=0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 <9115669faedccdda100428e2d26fd0aac8c50799 || >=0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 <0bbbff00a15b1df2cac9014d6cf4b6890f473353 || >=0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 <640e37f58f991546a87540d067279c2c1fa9fe51 || >=0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 <290e833d1acb1093bc121fcdc97f5e6161157479 || >=0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 <e174929793195e0cd6a4adb0cad731b39f9019b4 | c6e51512a784c4a7b86e1a044988696e3b3721fa, 03014551938a0887fa55f18ce49b70158a9c0113, d84ce1786ce40fdd3dd98db47aec5527817e1ef6, 9115669faedccdda100428e2d26fd0aac8c50799, 0bbbff00a15b1df2cac9014d6cf4b6890f473353, 640e37f58f991546a87540d067279c2c1fa9fe51, 290e833d1acb1093bc121fcdc97f5e6161157479, e174929793195e0cd6a4adb0cad731b39f9019b4 |
| Linux/Linuxgeneric | 4.17 | Not reported |
Published upstream
May 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 26, 2026
In the Linux kernel, the following vulnerability has been resolved: net/rds: reset op_nents when zerocopy page pin fails When iov_iter_get_pages2() fails in rds_message_zcopy_from_user(), the pinned pages are released with put_page(), and rm->data.op_mmp_znotifier is cleared. But we fail to properly clear rm->data.op_nents. Later when rds_message_purge() is called from rds_sendmsg() the cleanup loop iterates over the incorrectly non zero number of op_nents and frees them again. Fix this by properly resetting op_nents when it should be in rds_message_zcopy_from_user().
Quoted source text, attributed separately from HOL analysis.