Medium 5.5Published Mar 25, 2026

CVE-2026-23285drbd: fix null-pointer dereference on local read error

Updated under an hour ago (Oct 27, 2026, 10:50 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: drbd: fix null-pointer dereference on local read error In drbd_request_endio(), READ_COMPLETED_WITH_ERROR is passed to __req_mod() with a NULL peer_device: __req_mod(req, what, NULL, &m); The READ_COMPLETED_WITH_ERROR handler then unconditionally passes this NULL peer_device to drbd_set_out_of_sync(), which dereferences it, causing a null-pointer dereference. Fix this by obtaining the peer_device via first_peer_device(device), matching how drbd_req_destroy() handles the same situation.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 0d11f3cf279c5ad20a41f29242f170ba3c02f2da before 6f1d1614f841d91a4169db65812ffd1271735b42; from 0d11f3cf279c5ad20a41f29242f170ba3c02f2da before 1e906c08594c8f9a6a524f38ede2c4e051196106; from 0d11f3cf279c5ad20a41f29242f170ba3c02f2da before 4e8935053ba389ae8d6685c10854d8021931bd89; from 0d11f3cf279c5ad20a41f29242f170ba3c02f2da before 91df51d2df0ca4fd3281f73626341563d64a98a5; from 0d11f3cf279c5ad20a41f29242f170ba3c02f2da before 0d195d3b205ca90db30d70d09d7bb6909aac178f	CNA record
linux linux_kernel linux:linux_kernel	from 6.4 before 6.6.130; from 6.7 before 6.12.77; from 6.13 before 6.18.17; from 6.19 before 6.19.7; 7.0	NVD

References

References

https://git.kernel.org/stable/c/6f1d1614f841d91a4169db65812ffd1271735b42	patch
https://git.kernel.org/stable/c/1e906c08594c8f9a6a524f38ede2c4e051196106	patch
https://git.kernel.org/stable/c/4e8935053ba389ae8d6685c10854d8021931bd89	patch
https://git.kernel.org/stable/c/91df51d2df0ca4fd3281f73626341563d64a98a5	patch
https://git.kernel.org/stable/c/0d195d3b205ca90db30d70d09d7bb6909aac178f	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.